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perf ui tui progress: Don't force a refresh during progress update
[linux-2.6-block.git] / tools / perf / util / evsel.c
CommitLineData
f8a95309
ACM		 1/*
2 * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
3 *
4 * Parts came from builtin-{top,stat,record}.c, see those files for further
5 * copyright notes.
6 *
7 * Released under the GPL v2. (and only v2, not any later version)
8 */
9
936be503 10#include <byteswap.h>
0f6a3015 11#include <linux/bitops.h>
85c66be1 12#include <lk/debugfs.h>
4e319027
RR		 13#include <traceevent/event-parse.h>
14#include <linux/hw_breakpoint.h>
15#include <linux/perf_event.h>
bec19672 16#include <sys/resource.h>
4e319027 17#include "asm/bug.h"
69aad6f1 18#include "evsel.h"
70082dd9 19#include "evlist.h"
69aad6f1 20#include "util.h"
86bd5e86 21#include "cpumap.h"
fd78260b 22#include "thread_map.h"
12864b31 23#include "target.h"
26d33022 24#include "perf_regs.h"
e3e1a54f 25#include "debug.h"
69aad6f1 26
594ac61a
ACM		 27static struct {
28 bool sample_id_all;
29 bool exclude_guest;
5c5e854b 30 bool mmap2;
594ac61a
ACM		 31} perf_missing_features;
32
c52b12ed
ACM		 33#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
34
75562573 35int __perf_evsel__sample_size(u64 sample_type)
c2a70653
ACM		 36{
37 u64 mask = sample_type & PERF_SAMPLE_MASK;
38 int size = 0;
39 int i;
40
41 for (i = 0; i < 64; i++) {
42 if (mask & (1ULL << i))
43 size++;
44 }
45
46 size *= sizeof(u64);
47
48 return size;
49}
50
75562573
AH		 51/**
52 * __perf_evsel__calc_id_pos - calculate id_pos.
53 * @sample_type: sample type
54 *
55 * This function returns the position of the event id (PERF_SAMPLE_ID or
56 * PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of struct
57 * sample_event.
58 */
59static int __perf_evsel__calc_id_pos(u64 sample_type)
60{
61 int idx = 0;
62
63 if (sample_type & PERF_SAMPLE_IDENTIFIER)
64 return 0;
65
66 if (!(sample_type & PERF_SAMPLE_ID))
67 return -1;
68
69 if (sample_type & PERF_SAMPLE_IP)
70 idx += 1;
71
72 if (sample_type & PERF_SAMPLE_TID)
73 idx += 1;
74
75 if (sample_type & PERF_SAMPLE_TIME)
76 idx += 1;
77
78 if (sample_type & PERF_SAMPLE_ADDR)
79 idx += 1;
80
81 return idx;
82}
83
84/**
85 * __perf_evsel__calc_is_pos - calculate is_pos.
86 * @sample_type: sample type
87 *
88 * This function returns the position (counting backwards) of the event id
89 * (PERF_SAMPLE_ID or PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if
90 * sample_id_all is used there is an id sample appended to non-sample events.
91 */
92static int __perf_evsel__calc_is_pos(u64 sample_type)
93{
94 int idx = 1;
95
96 if (sample_type & PERF_SAMPLE_IDENTIFIER)
97 return 1;
98
99 if (!(sample_type & PERF_SAMPLE_ID))
100 return -1;
101
102 if (sample_type & PERF_SAMPLE_CPU)
103 idx += 1;
104
105 if (sample_type & PERF_SAMPLE_STREAM_ID)
106 idx += 1;
107
108 return idx;
109}
110
111void perf_evsel__calc_id_pos(struct perf_evsel *evsel)
112{
113 evsel->id_pos = __perf_evsel__calc_id_pos(evsel->attr.sample_type);
114 evsel->is_pos = __perf_evsel__calc_is_pos(evsel->attr.sample_type);
115}
116
4bf9ce1b 117void hists__init(struct hists *hists)
0e2a5f10
ACM		 118{
119 memset(hists, 0, sizeof(*hists));
120 hists->entries_in_array[0] = hists->entries_in_array[1] = RB_ROOT;
121 hists->entries_in = &hists->entries_in_array[0];
122 hists->entries_collapsed = RB_ROOT;
123 hists->entries = RB_ROOT;
124 pthread_mutex_init(&hists->lock, NULL);
125}
126
7be5ebe8
ACM		 127void __perf_evsel__set_sample_bit(struct perf_evsel *evsel,
128 enum perf_event_sample_format bit)
129{
130 if (!(evsel->attr.sample_type & bit)) {
131 evsel->attr.sample_type |= bit;
132 evsel->sample_size += sizeof(u64);
75562573 133 perf_evsel__calc_id_pos(evsel);
7be5ebe8
ACM		 134 }
135}
136
137void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel,
138 enum perf_event_sample_format bit)
139{
140 if (evsel->attr.sample_type & bit) {
141 evsel->attr.sample_type &= ~bit;
142 evsel->sample_size -= sizeof(u64);
75562573 143 perf_evsel__calc_id_pos(evsel);
7be5ebe8
ACM		 144 }
145}
146
75562573
AH		 147void perf_evsel__set_sample_id(struct perf_evsel *evsel,
148 bool can_sample_identifier)
7a5a5ca5 149{
75562573
AH		 150 if (can_sample_identifier) {
151 perf_evsel__reset_sample_bit(evsel, ID);
152 perf_evsel__set_sample_bit(evsel, IDENTIFIER);
153 } else {
154 perf_evsel__set_sample_bit(evsel, ID);
155 }
7a5a5ca5
ACM		 156 evsel->attr.read_format |= PERF_FORMAT_ID;
157}
158
ef1d1af2
ACM		 159void perf_evsel__init(struct perf_evsel *evsel,
160 struct perf_event_attr *attr, int idx)
161{
162 evsel->idx = idx;
163 evsel->attr = *attr;
2cfda562 164 evsel->leader = evsel;
ef1d1af2 165 INIT_LIST_HEAD(&evsel->node);
1980c2eb 166 hists__init(&evsel->hists);
bde09467 167 evsel->sample_size = __perf_evsel__sample_size(attr->sample_type);
75562573 168 perf_evsel__calc_id_pos(evsel);
ef1d1af2
ACM		 169}
170
23a2f3ab 171struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx)
69aad6f1
ACM		 172{
173 struct perf_evsel *evsel = zalloc(sizeof(*evsel));
174
ef1d1af2
ACM		 175 if (evsel != NULL)
176 perf_evsel__init(evsel, attr, idx);
69aad6f1
ACM		 177
178 return evsel;
179}
180
201b7334 181struct event_format *event_format__new(const char *sys, const char *name)
efd2b924
ACM		 182{
183 int fd, n;
184 char *filename;
185 void *bf = NULL, *nbf;
186 size_t size = 0, alloc_size = 0;
187 struct event_format *format = NULL;
188
189 if (asprintf(&filename, "%s/%s/%s/format", tracing_events_path, sys, name) < 0)
190 goto out;
191
192 fd = open(filename, O_RDONLY);
193 if (fd < 0)
194 goto out_free_filename;
195
196 do {
197 if (size == alloc_size) {
198 alloc_size += BUFSIZ;
199 nbf = realloc(bf, alloc_size);
200 if (nbf == NULL)
201 goto out_free_bf;
202 bf = nbf;
203 }
204
7cab84e8 205 n = read(fd, bf + size, alloc_size - size);
efd2b924
ACM		 206 if (n < 0)
207 goto out_free_bf;
208 size += n;
209 } while (n > 0);
210
211 pevent_parse_format(&format, bf, size, sys);
212
213out_free_bf:
214 free(bf);
215 close(fd);
216out_free_filename:
217 free(filename);
218out:
219 return format;
220}
221
222struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name, int idx)
223{
224 struct perf_evsel *evsel = zalloc(sizeof(*evsel));
225
226 if (evsel != NULL) {
227 struct perf_event_attr attr = {
0b80f8b3
ACM		 228 .type = PERF_TYPE_TRACEPOINT,
229 .sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME |
230 PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD),
efd2b924
ACM		 231 };
232
e48ffe2b
ACM		 233 if (asprintf(&evsel->name, "%s:%s", sys, name) < 0)
234 goto out_free;
235
efd2b924
ACM		 236 evsel->tp_format = event_format__new(sys, name);
237 if (evsel->tp_format == NULL)
238 goto out_free;
239
0b80f8b3 240 event_attr_init(&attr);
efd2b924 241 attr.config = evsel->tp_format->id;
0b80f8b3 242 attr.sample_period = 1;
efd2b924 243 perf_evsel__init(evsel, &attr, idx);
efd2b924
ACM		 244 }
245
246 return evsel;
247
248out_free:
e48ffe2b 249 free(evsel->name);
efd2b924
ACM		 250 free(evsel);
251 return NULL;
252}
253
8ad7013b 254const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = {
c410431c
ACM		 255 "cycles",
256 "instructions",
257 "cache-references",
258 "cache-misses",
259 "branches",
260 "branch-misses",
261 "bus-cycles",
262 "stalled-cycles-frontend",
263 "stalled-cycles-backend",
264 "ref-cycles",
265};
266
dd4f5223 267static const char *__perf_evsel__hw_name(u64 config)
c410431c
ACM		 268{
269 if (config < PERF_COUNT_HW_MAX && perf_evsel__hw_names[config])
270 return perf_evsel__hw_names[config];
271
272 return "unknown-hardware";
273}
274
27f18617 275static int perf_evsel__add_modifiers(struct perf_evsel *evsel, char *bf, size_t size)
c410431c 276{
27f18617 277 int colon = 0, r = 0;
c410431c 278 struct perf_event_attr *attr = &evsel->attr;
c410431c
ACM		 279 bool exclude_guest_default = false;
280
281#define MOD_PRINT(context, mod) do { \
282 if (!attr->exclude_##context) { \
27f18617 283 if (!colon) colon = ++r; \
c410431c
ACM		 284 r += scnprintf(bf + r, size - r, "%c", mod); \
285 } } while(0)
286
287 if (attr->exclude_kernel || attr->exclude_user || attr->exclude_hv) {
288 MOD_PRINT(kernel, 'k');
289 MOD_PRINT(user, 'u');
290 MOD_PRINT(hv, 'h');
291 exclude_guest_default = true;
292 }
293
294 if (attr->precise_ip) {
295 if (!colon)
27f18617 296 colon = ++r;
c410431c
ACM		 297 r += scnprintf(bf + r, size - r, "%.*s", attr->precise_ip, "ppp");
298 exclude_guest_default = true;
299 }
300
301 if (attr->exclude_host || attr->exclude_guest == exclude_guest_default) {
302 MOD_PRINT(host, 'H');
303 MOD_PRINT(guest, 'G');
304 }
305#undef MOD_PRINT
306 if (colon)
27f18617 307 bf[colon - 1] = ':';
c410431c
ACM		 308 return r;
309}
310
27f18617
ACM		 311static int perf_evsel__hw_name(struct perf_evsel *evsel, char *bf, size_t size)
312{
313 int r = scnprintf(bf, size, "%s", __perf_evsel__hw_name(evsel->attr.config));
314 return r + perf_evsel__add_modifiers(evsel, bf + r, size - r);
315}
316
8ad7013b 317const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = {
335c2f5d
ACM		 318 "cpu-clock",
319 "task-clock",
320 "page-faults",
321 "context-switches",
8ad7013b 322 "cpu-migrations",
335c2f5d
ACM		 323 "minor-faults",
324 "major-faults",
325 "alignment-faults",
326 "emulation-faults",
d22d1a2a 327 "dummy",
335c2f5d
ACM		 328};
329
dd4f5223 330static const char *__perf_evsel__sw_name(u64 config)
335c2f5d
ACM		 331{
332 if (config < PERF_COUNT_SW_MAX && perf_evsel__sw_names[config])
333 return perf_evsel__sw_names[config];
334 return "unknown-software";
335}
336
337static int perf_evsel__sw_name(struct perf_evsel *evsel, char *bf, size_t size)
338{
339 int r = scnprintf(bf, size, "%s", __perf_evsel__sw_name(evsel->attr.config));
340 return r + perf_evsel__add_modifiers(evsel, bf + r, size - r);
341}
342
287e74aa
JO		 343static int __perf_evsel__bp_name(char *bf, size_t size, u64 addr, u64 type)
344{
345 int r;
346
347 r = scnprintf(bf, size, "mem:0x%" PRIx64 ":", addr);
348
349 if (type & HW_BREAKPOINT_R)
350 r += scnprintf(bf + r, size - r, "r");
351
352 if (type & HW_BREAKPOINT_W)
353 r += scnprintf(bf + r, size - r, "w");
354
355 if (type & HW_BREAKPOINT_X)
356 r += scnprintf(bf + r, size - r, "x");
357
358 return r;
359}
360
361static int perf_evsel__bp_name(struct perf_evsel *evsel, char *bf, size_t size)
362{
363 struct perf_event_attr *attr = &evsel->attr;
364 int r = __perf_evsel__bp_name(bf, size, attr->bp_addr, attr->bp_type);
365 return r + perf_evsel__add_modifiers(evsel, bf + r, size - r);
366}
367
0b668bc9
ACM		 368const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
369 [PERF_EVSEL__MAX_ALIASES] = {
370 { "L1-dcache", "l1-d", "l1d", "L1-data", },
371 { "L1-icache", "l1-i", "l1i", "L1-instruction", },
372 { "LLC", "L2", },
373 { "dTLB", "d-tlb", "Data-TLB", },
374 { "iTLB", "i-tlb", "Instruction-TLB", },
375 { "branch", "branches", "bpu", "btb", "bpc", },
376 { "node", },
377};
378
379const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
380 [PERF_EVSEL__MAX_ALIASES] = {
381 { "load", "loads", "read", },
382 { "store", "stores", "write", },
383 { "prefetch", "prefetches", "speculative-read", "speculative-load", },
384};
385
386const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
387 [PERF_EVSEL__MAX_ALIASES] = {
388 { "refs", "Reference", "ops", "access", },
389 { "misses", "miss", },
390};
391
392#define C(x) PERF_COUNT_HW_CACHE_##x
393#define CACHE_READ (1 << C(OP_READ))
394#define CACHE_WRITE (1 << C(OP_WRITE))
395#define CACHE_PREFETCH (1 << C(OP_PREFETCH))
396#define COP(x) (1 << x)
397
398/*
399 * cache operartion stat
400 * L1I : Read and prefetch only
401 * ITLB and BPU : Read-only
402 */
403static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = {
404 [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
405 [C(L1I)] = (CACHE_READ | CACHE_PREFETCH),
406 [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
407 [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
408 [C(ITLB)] = (CACHE_READ),
409 [C(BPU)] = (CACHE_READ),
410 [C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
411};
412
413bool perf_evsel__is_cache_op_valid(u8 type, u8 op)
414{
415 if (perf_evsel__hw_cache_stat[type] & COP(op))
416 return true; /* valid */
417 else
418 return false; /* invalid */
419}
420
421int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
422 char *bf, size_t size)
423{
424 if (result) {
425 return scnprintf(bf, size, "%s-%s-%s", perf_evsel__hw_cache[type][0],
426 perf_evsel__hw_cache_op[op][0],
427 perf_evsel__hw_cache_result[result][0]);
428 }
429
430 return scnprintf(bf, size, "%s-%s", perf_evsel__hw_cache[type][0],
431 perf_evsel__hw_cache_op[op][1]);
432}
433
dd4f5223 434static int __perf_evsel__hw_cache_name(u64 config, char *bf, size_t size)
0b668bc9
ACM		 435{
436 u8 op, result, type = (config >> 0) & 0xff;
437 const char *err = "unknown-ext-hardware-cache-type";
438
439 if (type > PERF_COUNT_HW_CACHE_MAX)
440 goto out_err;
441
442 op = (config >> 8) & 0xff;
443 err = "unknown-ext-hardware-cache-op";
444 if (op > PERF_COUNT_HW_CACHE_OP_MAX)
445 goto out_err;
446
447 result = (config >> 16) & 0xff;
448 err = "unknown-ext-hardware-cache-result";
449 if (result > PERF_COUNT_HW_CACHE_RESULT_MAX)
450 goto out_err;
451
452 err = "invalid-cache";
453 if (!perf_evsel__is_cache_op_valid(type, op))
454 goto out_err;
455
456 return __perf_evsel__hw_cache_type_op_res_name(type, op, result, bf, size);
457out_err:
458 return scnprintf(bf, size, "%s", err);
459}
460
461static int perf_evsel__hw_cache_name(struct perf_evsel *evsel, char *bf, size_t size)
462{
463 int ret = __perf_evsel__hw_cache_name(evsel->attr.config, bf, size);
464 return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret);
465}
466
6eef3d9c
ACM		 467static int perf_evsel__raw_name(struct perf_evsel *evsel, char *bf, size_t size)
468{
469 int ret = scnprintf(bf, size, "raw 0x%" PRIx64, evsel->attr.config);
470 return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret);
471}
472
7289f83c 473const char *perf_evsel__name(struct perf_evsel *evsel)
a4460836 474{
7289f83c 475 char bf[128];
a4460836 476
7289f83c
ACM		 477 if (evsel->name)
478 return evsel->name;
c410431c
ACM		 479
480 switch (evsel->attr.type) {
481 case PERF_TYPE_RAW:
6eef3d9c 482 perf_evsel__raw_name(evsel, bf, sizeof(bf));
c410431c
ACM		 483 break;
484
485 case PERF_TYPE_HARDWARE:
7289f83c 486 perf_evsel__hw_name(evsel, bf, sizeof(bf));
c410431c 487 break;
0b668bc9
ACM		 488
489 case PERF_TYPE_HW_CACHE:
7289f83c 490 perf_evsel__hw_cache_name(evsel, bf, sizeof(bf));
0b668bc9
ACM		 491 break;
492
335c2f5d 493 case PERF_TYPE_SOFTWARE:
7289f83c 494 perf_evsel__sw_name(evsel, bf, sizeof(bf));
335c2f5d
ACM		 495 break;
496
a4460836 497 case PERF_TYPE_TRACEPOINT:
7289f83c 498 scnprintf(bf, sizeof(bf), "%s", "unknown tracepoint");
a4460836
ACM		 499 break;
500
287e74aa
JO		 501 case PERF_TYPE_BREAKPOINT:
502 perf_evsel__bp_name(evsel, bf, sizeof(bf));
503 break;
504
c410431c 505 default:
ca1b1457
RR		 506 scnprintf(bf, sizeof(bf), "unknown attr type: %d",
507 evsel->attr.type);
a4460836 508 break;
c410431c
ACM		 509 }
510
7289f83c
ACM		 511 evsel->name = strdup(bf);
512
513 return evsel->name ?: "unknown";
c410431c
ACM		 514}
515
717e263f
NK		 516const char *perf_evsel__group_name(struct perf_evsel *evsel)
517{
518 return evsel->group_name ?: "anon group";
519}
520
521int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size)
522{
523 int ret;
524 struct perf_evsel *pos;
525 const char *group_name = perf_evsel__group_name(evsel);
526
527 ret = scnprintf(buf, size, "%s", group_name);
528
529 ret += scnprintf(buf + ret, size - ret, " { %s",
530 perf_evsel__name(evsel));
531
532 for_each_group_member(pos, evsel)
533 ret += scnprintf(buf + ret, size - ret, ", %s",
534 perf_evsel__name(pos));
535
536 ret += scnprintf(buf + ret, size - ret, " }");
537
538 return ret;
539}
540
774cb499
JO		 541/*
542 * The enable_on_exec/disabled value strategy:
543 *
544 * 1) For any type of traced program:
545 * - all independent events and group leaders are disabled
546 * - all group members are enabled
547 *
548 * Group members are ruled by group leaders. They need to
549 * be enabled, because the group scheduling relies on that.
550 *
551 * 2) For traced programs executed by perf:
552 * - all independent events and group leaders have
553 * enable_on_exec set
554 * - we don't specifically enable or disable any event during
555 * the record command
556 *
557 * Independent events and group leaders are initially disabled
558 * and get enabled by exec. Group members are ruled by group
559 * leaders as stated in 1).
560 *
561 * 3) For traced programs attached by perf (pid/tid):
562 * - we specifically enable or disable all events during
563 * the record command
564 *
565 * When attaching events to already running traced we
566 * enable/disable events specifically, as there's no
567 * initial traced exec call.
568 */
cac21425
JO		 569void perf_evsel__config(struct perf_evsel *evsel,
570 struct perf_record_opts *opts)
0f82ebc4 571{
3c176311 572 struct perf_evsel *leader = evsel->leader;
0f82ebc4
ACM		 573 struct perf_event_attr *attr = &evsel->attr;
574 int track = !evsel->idx; /* only the first counter needs these */
575
594ac61a 576 attr->sample_id_all = perf_missing_features.sample_id_all ? 0 : 1;
0f82ebc4 577 attr->inherit = !opts->no_inherit;
0f82ebc4 578
7be5ebe8
ACM		 579 perf_evsel__set_sample_bit(evsel, IP);
580 perf_evsel__set_sample_bit(evsel, TID);
0f82ebc4 581
3c176311
JO		 582 if (evsel->sample_read) {
583 perf_evsel__set_sample_bit(evsel, READ);
584
585 /*
586 * We need ID even in case of single event, because
587 * PERF_SAMPLE_READ process ID specific data.
588 */
75562573 589 perf_evsel__set_sample_id(evsel, false);
3c176311
JO		 590
591 /*
592 * Apply group format only if we belong to group
593 * with more than one members.
594 */
595 if (leader->nr_members > 1) {
596 attr->read_format |= PERF_FORMAT_GROUP;
597 attr->inherit = 0;
598 }
599 }
600
0f82ebc4
ACM		 601 /*
602 * We default some events to a 1 default interval. But keep
603 * it a weak assumption overridable by the user.
604 */
605 if (!attr->sample_period || (opts->user_freq != UINT_MAX &&
606 opts->user_interval != ULLONG_MAX)) {
607 if (opts->freq) {
7be5ebe8 608 perf_evsel__set_sample_bit(evsel, PERIOD);
0f82ebc4
ACM		 609 attr->freq = 1;
610 attr->sample_freq = opts->freq;
611 } else {
612 attr->sample_period = opts->default_interval;
613 }
614 }
615
3c176311
JO		 616 /*
617 * Disable sampling for all group members other
618 * than leader in case leader 'leads' the sampling.
619 */
620 if ((leader != evsel) && leader->sample_read) {
621 attr->sample_freq = 0;
622 attr->sample_period = 0;
623 }
624
0f82ebc4
ACM		 625 if (opts->no_samples)
626 attr->sample_freq = 0;
627
628 if (opts->inherit_stat)
629 attr->inherit_stat = 1;
630
631 if (opts->sample_address) {
7be5ebe8 632 perf_evsel__set_sample_bit(evsel, ADDR);
0f82ebc4
ACM		 633 attr->mmap_data = track;
634 }
635
26d33022 636 if (opts->call_graph) {
7be5ebe8 637 perf_evsel__set_sample_bit(evsel, CALLCHAIN);
0f82ebc4 638
26d33022 639 if (opts->call_graph == CALLCHAIN_DWARF) {
7be5ebe8
ACM		 640 perf_evsel__set_sample_bit(evsel, REGS_USER);
641 perf_evsel__set_sample_bit(evsel, STACK_USER);
26d33022
JO		 642 attr->sample_regs_user = PERF_REGS_MASK;
643 attr->sample_stack_user = opts->stack_dump_size;
644 attr->exclude_callchain_user = 1;
645 }
646 }
647
e40ee742 648 if (perf_target__has_cpu(&opts->target))
7be5ebe8 649 perf_evsel__set_sample_bit(evsel, CPU);
0f82ebc4 650
3e76ac78 651 if (opts->period)
7be5ebe8 652 perf_evsel__set_sample_bit(evsel, PERIOD);
3e76ac78 653
594ac61a 654 if (!perf_missing_features.sample_id_all &&
d67356e7 655 (opts->sample_time || !opts->no_inherit ||
aa22dd49 656 perf_target__has_cpu(&opts->target)))
7be5ebe8 657 perf_evsel__set_sample_bit(evsel, TIME);
0f82ebc4
ACM		 658
659 if (opts->raw_samples) {
7be5ebe8
ACM		 660 perf_evsel__set_sample_bit(evsel, TIME);
661 perf_evsel__set_sample_bit(evsel, RAW);
662 perf_evsel__set_sample_bit(evsel, CPU);
0f82ebc4
ACM		 663 }
664
ccf49bfc 665 if (opts->sample_address)
1e7ed5ec 666 perf_evsel__set_sample_bit(evsel, DATA_SRC);
ccf49bfc 667
0f82ebc4
ACM		 668 if (opts->no_delay) {
669 attr->watermark = 0;
670 attr->wakeup_events = 1;
671 }
bdfebd84 672 if (opts->branch_stack) {
7be5ebe8 673 perf_evsel__set_sample_bit(evsel, BRANCH_STACK);
bdfebd84
RAV		 674 attr->branch_sample_type = opts->branch_stack;
675 }
0f82ebc4 676
05484298 677 if (opts->sample_weight)
1e7ed5ec 678 perf_evsel__set_sample_bit(evsel, WEIGHT);
05484298 679
5c5e854b 680 attr->mmap = track;
5c5e854b 681 attr->comm = track;
0f82ebc4 682
475eeab9 683 if (opts->sample_transaction)
1e7ed5ec 684 perf_evsel__set_sample_bit(evsel, TRANSACTION);
475eeab9 685
774cb499
JO		 686 /*
687 * XXX see the function comment above
688 *
689 * Disabling only independent events or group leaders,
690 * keeping group members enabled.
691 */
823254ed 692 if (perf_evsel__is_group_leader(evsel))
774cb499
JO		 693 attr->disabled = 1;
694
695 /*
696 * Setting enable_on_exec for independent events and
697 * group leaders for traced executed by perf.
698 */
823254ed 699 if (perf_target__none(&opts->target) && perf_evsel__is_group_leader(evsel))
0f82ebc4 700 attr->enable_on_exec = 1;
0f82ebc4
ACM		 701}
702
69aad6f1
ACM		 703int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
704{
4af4c955 705 int cpu, thread;
69aad6f1 706 evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int));
4af4c955
DA		 707
708 if (evsel->fd) {
709 for (cpu = 0; cpu < ncpus; cpu++) {
710 for (thread = 0; thread < nthreads; thread++) {
711 FD(evsel, cpu, thread) = -1;
712 }
713 }
714 }
715
69aad6f1
ACM		 716 return evsel->fd != NULL ? 0 : -ENOMEM;
717}
718
e2407bef
AK		 719static int perf_evsel__run_ioctl(struct perf_evsel *evsel, int ncpus, int nthreads,
720 int ioc, void *arg)
745cefc5
ACM		 721{
722 int cpu, thread;
723
724 for (cpu = 0; cpu < ncpus; cpu++) {
725 for (thread = 0; thread < nthreads; thread++) {
726 int fd = FD(evsel, cpu, thread),
e2407bef 727 err = ioctl(fd, ioc, arg);
745cefc5
ACM		 728
729 if (err)
730 return err;
731 }
732 }
733
734 return 0;
735}
736
e2407bef
AK		 737int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads,
738 const char *filter)
739{
740 return perf_evsel__run_ioctl(evsel, ncpus, nthreads,
741 PERF_EVENT_IOC_SET_FILTER,
742 (void *)filter);
743}
744
745int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads)
746{
747 return perf_evsel__run_ioctl(evsel, ncpus, nthreads,
748 PERF_EVENT_IOC_ENABLE,
749 0);
750}
751
70db7533
ACM		 752int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads)
753{
a91e5431
ACM		 754 evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id));
755 if (evsel->sample_id == NULL)
756 return -ENOMEM;
757
758 evsel->id = zalloc(ncpus * nthreads * sizeof(u64));
759 if (evsel->id == NULL) {
760 xyarray__delete(evsel->sample_id);
761 evsel->sample_id = NULL;
762 return -ENOMEM;
763 }
764
765 return 0;
70db7533
ACM		 766}
767
a7e191c3
FD		 768void perf_evsel__reset_counts(struct perf_evsel *evsel, int ncpus)
769{
770 memset(evsel->counts, 0, (sizeof(*evsel->counts) +
771 (ncpus * sizeof(struct perf_counts_values))));
772}
773
c52b12ed
ACM		 774int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus)
775{
776 evsel->counts = zalloc((sizeof(*evsel->counts) +
777 (ncpus * sizeof(struct perf_counts_values))));
778 return evsel->counts != NULL ? 0 : -ENOMEM;
779}
780
69aad6f1
ACM		 781void perf_evsel__free_fd(struct perf_evsel *evsel)
782{
783 xyarray__delete(evsel->fd);
784 evsel->fd = NULL;
785}
786
70db7533
ACM		 787void perf_evsel__free_id(struct perf_evsel *evsel)
788{
a91e5431
ACM		 789 xyarray__delete(evsel->sample_id);
790 evsel->sample_id = NULL;
791 free(evsel->id);
70db7533
ACM		 792 evsel->id = NULL;
793}
794
c52b12ed
ACM		 795void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
796{
797 int cpu, thread;
798
799 for (cpu = 0; cpu < ncpus; cpu++)
800 for (thread = 0; thread < nthreads; ++thread) {
801 close(FD(evsel, cpu, thread));
802 FD(evsel, cpu, thread) = -1;
803 }
804}
805
43f8e76e
NK		 806void perf_evsel__free_counts(struct perf_evsel *evsel)
807{
808 free(evsel->counts);
809}
810
ef1d1af2 811void perf_evsel__exit(struct perf_evsel *evsel)
69aad6f1
ACM		 812{
813 assert(list_empty(&evsel->node));
736b05a0
NK		 814 perf_evsel__free_fd(evsel);
815 perf_evsel__free_id(evsel);
ef1d1af2
ACM		 816}
817
818void perf_evsel__delete(struct perf_evsel *evsel)
819{
820 perf_evsel__exit(evsel);
023695d9 821 close_cgroup(evsel->cgrp);
6a4bb04c 822 free(evsel->group_name);
e48ffe2b 823 if (evsel->tp_format)
efd2b924 824 pevent_free_format(evsel->tp_format);
f0c55bcf 825 free(evsel->name);
69aad6f1
ACM		 826 free(evsel);
827}
c52b12ed 828
c7a79c47
SE		 829static inline void compute_deltas(struct perf_evsel *evsel,
830 int cpu,
831 struct perf_counts_values *count)
832{
833 struct perf_counts_values tmp;
834
835 if (!evsel->prev_raw_counts)
836 return;
837
838 if (cpu == -1) {
839 tmp = evsel->prev_raw_counts->aggr;
840 evsel->prev_raw_counts->aggr = *count;
841 } else {
842 tmp = evsel->prev_raw_counts->cpu[cpu];
843 evsel->prev_raw_counts->cpu[cpu] = *count;
844 }
845
846 count->val = count->val - tmp.val;
847 count->ena = count->ena - tmp.ena;
848 count->run = count->run - tmp.run;
849}
850
c52b12ed
ACM		 851int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
852 int cpu, int thread, bool scale)
853{
854 struct perf_counts_values count;
855 size_t nv = scale ? 3 : 1;
856
857 if (FD(evsel, cpu, thread) < 0)
858 return -EINVAL;
859
4eed11d5
ACM		 860 if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1) < 0)
861 return -ENOMEM;
862
c52b12ed
ACM		 863 if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) < 0)
864 return -errno;
865
c7a79c47
SE		 866 compute_deltas(evsel, cpu, &count);
867
c52b12ed
ACM		 868 if (scale) {
869 if (count.run == 0)
870 count.val = 0;
871 else if (count.run < count.ena)
872 count.val = (u64)((double)count.val * count.ena / count.run + 0.5);
873 } else
874 count.ena = count.run = 0;
875
876 evsel->counts->cpu[cpu] = count;
877 return 0;
878}
879
880int __perf_evsel__read(struct perf_evsel *evsel,
881 int ncpus, int nthreads, bool scale)
882{
883 size_t nv = scale ? 3 : 1;
884 int cpu, thread;
885 struct perf_counts_values *aggr = &evsel->counts->aggr, count;
886
52bcd994 887 aggr->val = aggr->ena = aggr->run = 0;
c52b12ed
ACM		 888
889 for (cpu = 0; cpu < ncpus; cpu++) {
890 for (thread = 0; thread < nthreads; thread++) {
891 if (FD(evsel, cpu, thread) < 0)
892 continue;
893
894 if (readn(FD(evsel, cpu, thread),
895 &count, nv * sizeof(u64)) < 0)
896 return -errno;
897
898 aggr->val += count.val;
899 if (scale) {
900 aggr->ena += count.ena;
901 aggr->run += count.run;
902 }
903 }
904 }
905
c7a79c47
SE		 906 compute_deltas(evsel, -1, aggr);
907
c52b12ed
ACM		 908 evsel->counts->scaled = 0;
909 if (scale) {
910 if (aggr->run == 0) {
911 evsel->counts->scaled = -1;
912 aggr->val = 0;
913 return 0;
914 }
915
916 if (aggr->run < aggr->ena) {
917 evsel->counts->scaled = 1;
918 aggr->val = (u64)((double)aggr->val * aggr->ena / aggr->run + 0.5);
919 }
920 } else
921 aggr->ena = aggr->run = 0;
922
923 return 0;
924}
48290609 925
6a4bb04c
JO		 926static int get_group_fd(struct perf_evsel *evsel, int cpu, int thread)
927{
928 struct perf_evsel *leader = evsel->leader;
929 int fd;
930
823254ed 931 if (perf_evsel__is_group_leader(evsel))
6a4bb04c
JO		 932 return -1;
933
934 /*
935 * Leader must be already processed/open,
936 * if not it's a bug.
937 */
938 BUG_ON(!leader->fd);
939
940 fd = FD(leader, cpu, thread);
941 BUG_ON(fd == -1);
942
943 return fd;
944}
945
e3e1a54f
AH		 946#define __PRINT_ATTR(fmt, cast, field) \
947 fprintf(fp, " %-19s "fmt"\n", #field, cast attr->field)
948
949#define PRINT_ATTR_U32(field) __PRINT_ATTR("%u" , , field)
950#define PRINT_ATTR_X32(field) __PRINT_ATTR("%#x", , field)
951#define PRINT_ATTR_U64(field) __PRINT_ATTR("%" PRIu64, (uint64_t), field)
952#define PRINT_ATTR_X64(field) __PRINT_ATTR("%#"PRIx64, (uint64_t), field)
953
954#define PRINT_ATTR2N(name1, field1, name2, field2) \
955 fprintf(fp, " %-19s %u %-19s %u\n", \
956 name1, attr->field1, name2, attr->field2)
957
958#define PRINT_ATTR2(field1, field2) \
959 PRINT_ATTR2N(#field1, field1, #field2, field2)
960
961static size_t perf_event_attr__fprintf(struct perf_event_attr *attr, FILE *fp)
962{
963 size_t ret = 0;
964
965 ret += fprintf(fp, "%.60s\n", graph_dotted_line);
966 ret += fprintf(fp, "perf_event_attr:\n");
967
968 ret += PRINT_ATTR_U32(type);
969 ret += PRINT_ATTR_U32(size);
970 ret += PRINT_ATTR_X64(config);
971 ret += PRINT_ATTR_U64(sample_period);
972 ret += PRINT_ATTR_U64(sample_freq);
973 ret += PRINT_ATTR_X64(sample_type);
974 ret += PRINT_ATTR_X64(read_format);
975
976 ret += PRINT_ATTR2(disabled, inherit);
977 ret += PRINT_ATTR2(pinned, exclusive);
978 ret += PRINT_ATTR2(exclude_user, exclude_kernel);
979 ret += PRINT_ATTR2(exclude_hv, exclude_idle);
980 ret += PRINT_ATTR2(mmap, comm);
981 ret += PRINT_ATTR2(freq, inherit_stat);
982 ret += PRINT_ATTR2(enable_on_exec, task);
983 ret += PRINT_ATTR2(watermark, precise_ip);
984 ret += PRINT_ATTR2(mmap_data, sample_id_all);
985 ret += PRINT_ATTR2(exclude_host, exclude_guest);
986 ret += PRINT_ATTR2N("excl.callchain_kern", exclude_callchain_kernel,
987 "excl.callchain_user", exclude_callchain_user);
40d54ec2 988 ret += PRINT_ATTR_U32(mmap2);
e3e1a54f
AH		 989
990 ret += PRINT_ATTR_U32(wakeup_events);
991 ret += PRINT_ATTR_U32(wakeup_watermark);
992 ret += PRINT_ATTR_X32(bp_type);
993 ret += PRINT_ATTR_X64(bp_addr);
994 ret += PRINT_ATTR_X64(config1);
995 ret += PRINT_ATTR_U64(bp_len);
996 ret += PRINT_ATTR_X64(config2);
997 ret += PRINT_ATTR_X64(branch_sample_type);
998 ret += PRINT_ATTR_X64(sample_regs_user);
999 ret += PRINT_ATTR_U32(sample_stack_user);
1000
1001 ret += fprintf(fp, "%.60s\n", graph_dotted_line);
1002
1003 return ret;
1004}
1005
0252208e 1006static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
6a4bb04c 1007 struct thread_map *threads)
48290609 1008{
0252208e 1009 int cpu, thread;
023695d9 1010 unsigned long flags = 0;
727ab04e 1011 int pid = -1, err;
bec19672 1012 enum { NO_CHANGE, SET_TO_MAX, INCREASED_MAX } set_rlimit = NO_CHANGE;
48290609 1013
0252208e
ACM		 1014 if (evsel->fd == NULL &&
1015 perf_evsel__alloc_fd(evsel, cpus->nr, threads->nr) < 0)
727ab04e 1016 return -ENOMEM;
4eed11d5 1017
023695d9
SE		 1018 if (evsel->cgrp) {
1019 flags = PERF_FLAG_PID_CGROUP;
1020 pid = evsel->cgrp->fd;
1021 }
1022
594ac61a 1023fallback_missing_features:
5c5e854b
SE		 1024 if (perf_missing_features.mmap2)
1025 evsel->attr.mmap2 = 0;
594ac61a
ACM		 1026 if (perf_missing_features.exclude_guest)
1027 evsel->attr.exclude_guest = evsel->attr.exclude_host = 0;
1028retry_sample_id:
1029 if (perf_missing_features.sample_id_all)
1030 evsel->attr.sample_id_all = 0;
1031
e3e1a54f
AH		 1032 if (verbose >= 2)
1033 perf_event_attr__fprintf(&evsel->attr, stderr);
1034
86bd5e86 1035 for (cpu = 0; cpu < cpus->nr; cpu++) {
9d04f178 1036
0252208e 1037 for (thread = 0; thread < threads->nr; thread++) {
6a4bb04c 1038 int group_fd;
023695d9
SE		 1039
1040 if (!evsel->cgrp)
1041 pid = threads->map[thread];
1042
6a4bb04c 1043 group_fd = get_group_fd(evsel, cpu, thread);
bec19672 1044retry_open:
e3e1a54f
AH		 1045 pr_debug2("perf_event_open: pid %d cpu %d group_fd %d flags %#lx\n",
1046 pid, cpus->map[cpu], group_fd, flags);
1047
0252208e 1048 FD(evsel, cpu, thread) = sys_perf_event_open(&evsel->attr,
023695d9 1049 pid,
f08199d3 1050 cpus->map[cpu],
023695d9 1051 group_fd, flags);
727ab04e
ACM		 1052 if (FD(evsel, cpu, thread) < 0) {
1053 err = -errno;
f852fd62
AH		 1054 pr_debug2("perf_event_open failed, error %d\n",
1055 err);
594ac61a 1056 goto try_fallback;
727ab04e 1057 }
bec19672 1058 set_rlimit = NO_CHANGE;
0252208e 1059 }
48290609
ACM		 1060 }
1061
1062 return 0;
1063
594ac61a 1064try_fallback:
bec19672
AK		 1065 /*
1066 * perf stat needs between 5 and 22 fds per CPU. When we run out
1067 * of them try to increase the limits.
1068 */
1069 if (err == -EMFILE && set_rlimit < INCREASED_MAX) {
1070 struct rlimit l;
1071 int old_errno = errno;
1072
1073 if (getrlimit(RLIMIT_NOFILE, &l) == 0) {
1074 if (set_rlimit == NO_CHANGE)
1075 l.rlim_cur = l.rlim_max;
1076 else {
1077 l.rlim_cur = l.rlim_max + 1000;
1078 l.rlim_max = l.rlim_cur;
1079 }
1080 if (setrlimit(RLIMIT_NOFILE, &l) == 0) {
1081 set_rlimit++;
1082 errno = old_errno;
1083 goto retry_open;
1084 }
1085 }
1086 errno = old_errno;
1087 }
1088
594ac61a
ACM		 1089 if (err != -EINVAL || cpu > 0 || thread > 0)
1090 goto out_close;
1091
5c5e854b
SE		 1092 if (!perf_missing_features.mmap2 && evsel->attr.mmap2) {
1093 perf_missing_features.mmap2 = true;
1094 goto fallback_missing_features;
1095 } else if (!perf_missing_features.exclude_guest &&
1096 (evsel->attr.exclude_guest || evsel->attr.exclude_host)) {
594ac61a
ACM		 1097 perf_missing_features.exclude_guest = true;
1098 goto fallback_missing_features;
1099 } else if (!perf_missing_features.sample_id_all) {
1100 perf_missing_features.sample_id_all = true;
1101 goto retry_sample_id;
1102 }
1103
48290609 1104out_close:
0252208e
ACM		 1105 do {
1106 while (--thread >= 0) {
1107 close(FD(evsel, cpu, thread));
1108 FD(evsel, cpu, thread) = -1;
1109 }
1110 thread = threads->nr;
1111 } while (--cpu >= 0);
727ab04e
ACM		 1112 return err;
1113}
1114
1115void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads)
1116{
1117 if (evsel->fd == NULL)
1118 return;
1119
1120 perf_evsel__close_fd(evsel, ncpus, nthreads);
1121 perf_evsel__free_fd(evsel);
1122 evsel->fd = NULL;
48290609
ACM		 1123}
1124
0252208e
ACM		 1125static struct {
1126 struct cpu_map map;
1127 int cpus[1];
1128} empty_cpu_map = {
1129 .map.nr = 1,
1130 .cpus = { -1, },
1131};
1132
1133static struct {
1134 struct thread_map map;
1135 int threads[1];
1136} empty_thread_map = {
1137 .map.nr = 1,
1138 .threads = { -1, },
1139};
1140
f08199d3 1141int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
6a4bb04c 1142 struct thread_map *threads)
48290609 1143{
0252208e
ACM		 1144 if (cpus == NULL) {
1145 /* Work around old compiler warnings about strict aliasing */
1146 cpus = &empty_cpu_map.map;
48290609
ACM		 1147 }
1148
0252208e
ACM		 1149 if (threads == NULL)
1150 threads = &empty_thread_map.map;
48290609 1151
6a4bb04c 1152 return __perf_evsel__open(evsel, cpus, threads);
48290609
ACM		 1153}
1154
f08199d3 1155int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
6a4bb04c 1156 struct cpu_map *cpus)
48290609 1157{
6a4bb04c 1158 return __perf_evsel__open(evsel, cpus, &empty_thread_map.map);
0252208e 1159}
48290609 1160
f08199d3 1161int perf_evsel__open_per_thread(struct perf_evsel *evsel,
6a4bb04c 1162 struct thread_map *threads)
0252208e 1163{
6a4bb04c 1164 return __perf_evsel__open(evsel, &empty_cpu_map.map, threads);
48290609 1165}
70082dd9 1166
0807d2d8
ACM		 1167static int perf_evsel__parse_id_sample(const struct perf_evsel *evsel,
1168 const union perf_event *event,
1169 struct perf_sample *sample)
d0dd74e8 1170{
0807d2d8 1171 u64 type = evsel->attr.sample_type;
d0dd74e8 1172 const u64 *array = event->sample.array;
0807d2d8 1173 bool swapped = evsel->needs_swap;
37073f9e 1174 union u64_swap u;
d0dd74e8
ACM		 1175
1176 array += ((event->header.size -
1177 sizeof(event->header)) / sizeof(u64)) - 1;
1178
75562573
AH		 1179 if (type & PERF_SAMPLE_IDENTIFIER) {
1180 sample->id = *array;
1181 array--;
1182 }
1183
d0dd74e8 1184 if (type & PERF_SAMPLE_CPU) {
37073f9e
JO		 1185 u.val64 = *array;
1186 if (swapped) {
1187 /* undo swap of u64, then swap on individual u32s */
1188 u.val64 = bswap_64(u.val64);
1189 u.val32[0] = bswap_32(u.val32[0]);
1190 }
1191
1192 sample->cpu = u.val32[0];
d0dd74e8
ACM		 1193 array--;
1194 }
1195
1196 if (type & PERF_SAMPLE_STREAM_ID) {
1197 sample->stream_id = *array;
1198 array--;
1199 }
1200
1201 if (type & PERF_SAMPLE_ID) {
1202 sample->id = *array;
1203 array--;
1204 }
1205
1206 if (type & PERF_SAMPLE_TIME) {
1207 sample->time = *array;
1208 array--;
1209 }
1210
1211 if (type & PERF_SAMPLE_TID) {
37073f9e
JO		 1212 u.val64 = *array;
1213 if (swapped) {
1214 /* undo swap of u64, then swap on individual u32s */
1215 u.val64 = bswap_64(u.val64);
1216 u.val32[0] = bswap_32(u.val32[0]);
1217 u.val32[1] = bswap_32(u.val32[1]);
1218 }
1219
1220 sample->pid = u.val32[0];
1221 sample->tid = u.val32[1];
dd44bc6b 1222 array--;
d0dd74e8
ACM		 1223 }
1224
1225 return 0;
1226}
1227
03b6ea9b
AH		 1228static inline bool overflow(const void *endp, u16 max_size, const void *offset,
1229 u64 size)
98e1da90 1230{
03b6ea9b
AH		 1231 return size > max_size || offset + size > endp;
1232}
98e1da90 1233
03b6ea9b
AH		 1234#define OVERFLOW_CHECK(offset, size, max_size) \
1235 do { \
1236 if (overflow(endp, (max_size), (offset), (size))) \
1237 return -EFAULT; \
1238 } while (0)
98e1da90 1239
03b6ea9b
AH		 1240#define OVERFLOW_CHECK_u64(offset) \
1241 OVERFLOW_CHECK(offset, sizeof(u64), sizeof(u64))
98e1da90 1242
a3f698fe 1243int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
0807d2d8 1244 struct perf_sample *data)
d0dd74e8 1245{
a3f698fe 1246 u64 type = evsel->attr.sample_type;
0807d2d8 1247 bool swapped = evsel->needs_swap;
d0dd74e8 1248 const u64 *array;
03b6ea9b
AH		 1249 u16 max_size = event->header.size;
1250 const void *endp = (void *)event + max_size;
1251 u64 sz;
d0dd74e8 1252
936be503
DA		 1253 /*
1254 * used for cross-endian analysis. See git commit 65014ab3
1255 * for why this goofiness is needed.
1256 */
6a11f92e 1257 union u64_swap u;
936be503 1258
f3bda2c9 1259 memset(data, 0, sizeof(*data));
d0dd74e8
ACM		 1260 data->cpu = data->pid = data->tid = -1;
1261 data->stream_id = data->id = data->time = -1ULL;
a4a03fc7 1262 data->period = 1;
05484298 1263 data->weight = 0;
d0dd74e8
ACM		 1264
1265 if (event->header.type != PERF_RECORD_SAMPLE) {
a3f698fe 1266 if (!evsel->attr.sample_id_all)
d0dd74e8 1267 return 0;
0807d2d8 1268 return perf_evsel__parse_id_sample(evsel, event, data);
d0dd74e8
ACM		 1269 }
1270
1271 array = event->sample.array;
1272
03b6ea9b
AH		 1273 /*
1274 * The evsel's sample_size is based on PERF_SAMPLE_MASK which includes
1275 * up to PERF_SAMPLE_PERIOD. After that overflow() must be used to
1276 * check the format does not go past the end of the event.
1277 */
a3f698fe 1278 if (evsel->sample_size + sizeof(event->header) > event->header.size)
a2854124
FW		 1279 return -EFAULT;
1280
75562573
AH		 1281 data->id = -1ULL;
1282 if (type & PERF_SAMPLE_IDENTIFIER) {
1283 data->id = *array;
1284 array++;
1285 }
1286
d0dd74e8 1287 if (type & PERF_SAMPLE_IP) {
ef89325f 1288 data->ip = *array;
d0dd74e8
ACM		 1289 array++;
1290 }
1291
1292 if (type & PERF_SAMPLE_TID) {
936be503
DA		 1293 u.val64 = *array;
1294 if (swapped) {
1295 /* undo swap of u64, then swap on individual u32s */
1296 u.val64 = bswap_64(u.val64);
1297 u.val32[0] = bswap_32(u.val32[0]);
1298 u.val32[1] = bswap_32(u.val32[1]);
1299 }
1300
1301 data->pid = u.val32[0];
1302 data->tid = u.val32[1];
d0dd74e8
ACM		 1303 array++;
1304 }
1305
1306 if (type & PERF_SAMPLE_TIME) {
1307 data->time = *array;
1308 array++;
1309 }
1310
7cec0922 1311 data->addr = 0;
d0dd74e8
ACM		 1312 if (type & PERF_SAMPLE_ADDR) {
1313 data->addr = *array;
1314 array++;
1315 }
1316
d0dd74e8
ACM		 1317 if (type & PERF_SAMPLE_ID) {
1318 data->id = *array;
1319 array++;
1320 }
1321
1322 if (type & PERF_SAMPLE_STREAM_ID) {
1323 data->stream_id = *array;
1324 array++;
1325 }
1326
1327 if (type & PERF_SAMPLE_CPU) {
936be503
DA		 1328
1329 u.val64 = *array;
1330 if (swapped) {
1331 /* undo swap of u64, then swap on individual u32s */
1332 u.val64 = bswap_64(u.val64);
1333 u.val32[0] = bswap_32(u.val32[0]);
1334 }
1335
1336 data->cpu = u.val32[0];
d0dd74e8
ACM		 1337 array++;
1338 }
1339
1340 if (type & PERF_SAMPLE_PERIOD) {
1341 data->period = *array;
1342 array++;
1343 }
1344
1345 if (type & PERF_SAMPLE_READ) {
9ede473c
JO		 1346 u64 read_format = evsel->attr.read_format;
1347
03b6ea9b 1348 OVERFLOW_CHECK_u64(array);
9ede473c
JO		 1349 if (read_format & PERF_FORMAT_GROUP)
1350 data->read.group.nr = *array;
1351 else
1352 data->read.one.value = *array;
1353
1354 array++;
1355
1356 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
03b6ea9b 1357 OVERFLOW_CHECK_u64(array);
9ede473c
JO		 1358 data->read.time_enabled = *array;
1359 array++;
1360 }
1361
1362 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
03b6ea9b 1363 OVERFLOW_CHECK_u64(array);
9ede473c
JO		 1364 data->read.time_running = *array;
1365 array++;
1366 }
1367
1368 /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */
1369 if (read_format & PERF_FORMAT_GROUP) {
03b6ea9b
AH		 1370 const u64 max_group_nr = UINT64_MAX /
1371 sizeof(struct sample_read_value);
1372
1373 if (data->read.group.nr > max_group_nr)
1374 return -EFAULT;
1375 sz = data->read.group.nr *
1376 sizeof(struct sample_read_value);
1377 OVERFLOW_CHECK(array, sz, max_size);
1378 data->read.group.values =
1379 (struct sample_read_value *)array;
1380 array = (void *)array + sz;
9ede473c 1381 } else {
03b6ea9b 1382 OVERFLOW_CHECK_u64(array);
9ede473c
JO		 1383 data->read.one.id = *array;
1384 array++;
1385 }
d0dd74e8
ACM		 1386 }
1387
1388 if (type & PERF_SAMPLE_CALLCHAIN) {
03b6ea9b 1389 const u64 max_callchain_nr = UINT64_MAX / sizeof(u64);
98e1da90 1390
03b6ea9b
AH		 1391 OVERFLOW_CHECK_u64(array);
1392 data->callchain = (struct ip_callchain *)array++;
1393 if (data->callchain->nr > max_callchain_nr)
98e1da90 1394 return -EFAULT;
03b6ea9b
AH		 1395 sz = data->callchain->nr * sizeof(u64);
1396 OVERFLOW_CHECK(array, sz, max_size);
1397 array = (void *)array + sz;
d0dd74e8
ACM		 1398 }
1399
1400 if (type & PERF_SAMPLE_RAW) {
03b6ea9b 1401 OVERFLOW_CHECK_u64(array);
936be503
DA		 1402 u.val64 = *array;
1403 if (WARN_ONCE(swapped,
1404 "Endianness of raw data not corrected!\n")) {
1405 /* undo swap of u64, then swap on individual u32s */
1406 u.val64 = bswap_64(u.val64);
1407 u.val32[0] = bswap_32(u.val32[0]);
1408 u.val32[1] = bswap_32(u.val32[1]);
1409 }
936be503 1410 data->raw_size = u.val32[0];
03b6ea9b 1411 array = (void *)array + sizeof(u32);
98e1da90 1412
03b6ea9b
AH		 1413 OVERFLOW_CHECK(array, data->raw_size, max_size);
1414 data->raw_data = (void *)array;
1415 array = (void *)array + data->raw_size;
d0dd74e8
ACM		 1416 }
1417
b5387528 1418 if (type & PERF_SAMPLE_BRANCH_STACK) {
03b6ea9b
AH		 1419 const u64 max_branch_nr = UINT64_MAX /
1420 sizeof(struct branch_entry);
b5387528 1421
03b6ea9b
AH		 1422 OVERFLOW_CHECK_u64(array);
1423 data->branch_stack = (struct branch_stack *)array++;
b5387528 1424
03b6ea9b
AH		 1425 if (data->branch_stack->nr > max_branch_nr)
1426 return -EFAULT;
b5387528 1427 sz = data->branch_stack->nr * sizeof(struct branch_entry);
03b6ea9b
AH		 1428 OVERFLOW_CHECK(array, sz, max_size);
1429 array = (void *)array + sz;
b5387528 1430 }
0f6a3015
JO		 1431
1432 if (type & PERF_SAMPLE_REGS_USER) {
03b6ea9b 1433 OVERFLOW_CHECK_u64(array);
5b95a4a3
AH		 1434 data->user_regs.abi = *array;
1435 array++;
0f6a3015 1436
5b95a4a3 1437 if (data->user_regs.abi) {
03b6ea9b
AH		 1438 u64 regs_user = evsel->attr.sample_regs_user;
1439
1440 sz = hweight_long(regs_user) * sizeof(u64);
1441 OVERFLOW_CHECK(array, sz, max_size);
0f6a3015 1442 data->user_regs.regs = (u64 *)array;
03b6ea9b 1443 array = (void *)array + sz;
0f6a3015
JO		 1444 }
1445 }
1446
1447 if (type & PERF_SAMPLE_STACK_USER) {
03b6ea9b
AH		 1448 OVERFLOW_CHECK_u64(array);
1449 sz = *array++;
0f6a3015
JO		 1450
1451 data->user_stack.offset = ((char *)(array - 1)
1452 - (char *) event);
1453
03b6ea9b 1454 if (!sz) {
0f6a3015
JO		 1455 data->user_stack.size = 0;
1456 } else {
03b6ea9b 1457 OVERFLOW_CHECK(array, sz, max_size);
0f6a3015 1458 data->user_stack.data = (char *)array;
03b6ea9b
AH		 1459 array = (void *)array + sz;
1460 OVERFLOW_CHECK_u64(array);
54bd2692 1461 data->user_stack.size = *array++;
a65cb4b9
JO		 1462 if (WARN_ONCE(data->user_stack.size > sz,
1463 "user stack dump failure\n"))
1464 return -EFAULT;
0f6a3015
JO		 1465 }
1466 }
1467
05484298
AK		 1468 data->weight = 0;
1469 if (type & PERF_SAMPLE_WEIGHT) {
03b6ea9b 1470 OVERFLOW_CHECK_u64(array);
05484298
AK		 1471 data->weight = *array;
1472 array++;
1473 }
1474
98a3b32c
SE		 1475 data->data_src = PERF_MEM_DATA_SRC_NONE;
1476 if (type & PERF_SAMPLE_DATA_SRC) {
03b6ea9b 1477 OVERFLOW_CHECK_u64(array);
98a3b32c
SE		 1478 data->data_src = *array;
1479 array++;
1480 }
1481
475eeab9
AK		 1482 data->transaction = 0;
1483 if (type & PERF_SAMPLE_TRANSACTION) {
87b95524 1484 OVERFLOW_CHECK_u64(array);
475eeab9
AK		 1485 data->transaction = *array;
1486 array++;
1487 }
1488
d0dd74e8
ACM		 1489 return 0;
1490}
74eec26f 1491
b1cf6f65
AH		 1492size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type,
1493 u64 sample_regs_user, u64 read_format)
1494{
1495 size_t sz, result = sizeof(struct sample_event);
1496
1497 if (type & PERF_SAMPLE_IDENTIFIER)
1498 result += sizeof(u64);
1499
1500 if (type & PERF_SAMPLE_IP)
1501 result += sizeof(u64);
1502
1503 if (type & PERF_SAMPLE_TID)
1504 result += sizeof(u64);
1505
1506 if (type & PERF_SAMPLE_TIME)
1507 result += sizeof(u64);
1508
1509 if (type & PERF_SAMPLE_ADDR)
1510 result += sizeof(u64);
1511
1512 if (type & PERF_SAMPLE_ID)
1513 result += sizeof(u64);
1514
1515 if (type & PERF_SAMPLE_STREAM_ID)
1516 result += sizeof(u64);
1517
1518 if (type & PERF_SAMPLE_CPU)
1519 result += sizeof(u64);
1520
1521 if (type & PERF_SAMPLE_PERIOD)
1522 result += sizeof(u64);
1523
1524 if (type & PERF_SAMPLE_READ) {
1525 result += sizeof(u64);
1526 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1527 result += sizeof(u64);
1528 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1529 result += sizeof(u64);
1530 /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */
1531 if (read_format & PERF_FORMAT_GROUP) {
1532 sz = sample->read.group.nr *
1533 sizeof(struct sample_read_value);
1534 result += sz;
1535 } else {
1536 result += sizeof(u64);
1537 }
1538 }
1539
1540 if (type & PERF_SAMPLE_CALLCHAIN) {
1541 sz = (sample->callchain->nr + 1) * sizeof(u64);
1542 result += sz;
1543 }
1544
1545 if (type & PERF_SAMPLE_RAW) {
1546 result += sizeof(u32);
1547 result += sample->raw_size;
1548 }
1549
1550 if (type & PERF_SAMPLE_BRANCH_STACK) {
1551 sz = sample->branch_stack->nr * sizeof(struct branch_entry);
1552 sz += sizeof(u64);
1553 result += sz;
1554 }
1555
1556 if (type & PERF_SAMPLE_REGS_USER) {
1557 if (sample->user_regs.abi) {
1558 result += sizeof(u64);
1559 sz = hweight_long(sample_regs_user) * sizeof(u64);
1560 result += sz;
1561 } else {
1562 result += sizeof(u64);
1563 }
1564 }
1565
1566 if (type & PERF_SAMPLE_STACK_USER) {
1567 sz = sample->user_stack.size;
1568 result += sizeof(u64);
1569 if (sz) {
1570 result += sz;
1571 result += sizeof(u64);
1572 }
1573 }
1574
1575 if (type & PERF_SAMPLE_WEIGHT)
1576 result += sizeof(u64);
1577
1578 if (type & PERF_SAMPLE_DATA_SRC)
1579 result += sizeof(u64);
1580
42d88910
AH		 1581 if (type & PERF_SAMPLE_TRANSACTION)
1582 result += sizeof(u64);
1583
b1cf6f65
AH		 1584 return result;
1585}
1586
74eec26f 1587int perf_event__synthesize_sample(union perf_event *event, u64 type,
d03f2170 1588 u64 sample_regs_user, u64 read_format,
74eec26f
AV		 1589 const struct perf_sample *sample,
1590 bool swapped)
1591{
1592 u64 *array;
d03f2170 1593 size_t sz;
74eec26f
AV		 1594 /*
1595 * used for cross-endian analysis. See git commit 65014ab3
1596 * for why this goofiness is needed.
1597 */
6a11f92e 1598 union u64_swap u;
74eec26f
AV		 1599
1600 array = event->sample.array;
1601
75562573
AH		 1602 if (type & PERF_SAMPLE_IDENTIFIER) {
1603 *array = sample->id;
1604 array++;
1605 }
1606
74eec26f 1607 if (type & PERF_SAMPLE_IP) {
ef89325f 1608 *array = sample->ip;
74eec26f
AV		 1609 array++;
1610 }
1611
1612 if (type & PERF_SAMPLE_TID) {
1613 u.val32[0] = sample->pid;
1614 u.val32[1] = sample->tid;
1615 if (swapped) {
1616 /*
a3f698fe 1617 * Inverse of what is done in perf_evsel__parse_sample
74eec26f
AV		 1618 */
1619 u.val32[0] = bswap_32(u.val32[0]);
1620 u.val32[1] = bswap_32(u.val32[1]);
1621 u.val64 = bswap_64(u.val64);
1622 }
1623
1624 *array = u.val64;
1625 array++;
1626 }
1627
1628 if (type & PERF_SAMPLE_TIME) {
1629 *array = sample->time;
1630 array++;
1631 }
1632
1633 if (type & PERF_SAMPLE_ADDR) {
1634 *array = sample->addr;
1635 array++;
1636 }
1637
1638 if (type & PERF_SAMPLE_ID) {
1639 *array = sample->id;
1640 array++;
1641 }
1642
1643 if (type & PERF_SAMPLE_STREAM_ID) {
1644 *array = sample->stream_id;
1645 array++;
1646 }
1647
1648 if (type & PERF_SAMPLE_CPU) {
1649 u.val32[0] = sample->cpu;
1650 if (swapped) {
1651 /*
a3f698fe 1652 * Inverse of what is done in perf_evsel__parse_sample
74eec26f
AV		 1653 */
1654 u.val32[0] = bswap_32(u.val32[0]);
1655 u.val64 = bswap_64(u.val64);
1656 }
1657 *array = u.val64;
1658 array++;
1659 }
1660
1661 if (type & PERF_SAMPLE_PERIOD) {
1662 *array = sample->period;
1663 array++;
1664 }
1665
d03f2170
AH		 1666 if (type & PERF_SAMPLE_READ) {
1667 if (read_format & PERF_FORMAT_GROUP)
1668 *array = sample->read.group.nr;
1669 else
1670 *array = sample->read.one.value;
1671 array++;
1672
1673 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
1674 *array = sample->read.time_enabled;
1675 array++;
1676 }
1677
1678 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
1679 *array = sample->read.time_running;
1680 array++;
1681 }
1682
1683 /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */
1684 if (read_format & PERF_FORMAT_GROUP) {
1685 sz = sample->read.group.nr *
1686 sizeof(struct sample_read_value);
1687 memcpy(array, sample->read.group.values, sz);
1688 array = (void *)array + sz;
1689 } else {
1690 *array = sample->read.one.id;
1691 array++;
1692 }
1693 }
1694
1695 if (type & PERF_SAMPLE_CALLCHAIN) {
1696 sz = (sample->callchain->nr + 1) * sizeof(u64);
1697 memcpy(array, sample->callchain, sz);
1698 array = (void *)array + sz;
1699 }
1700
1701 if (type & PERF_SAMPLE_RAW) {
1702 u.val32[0] = sample->raw_size;
1703 if (WARN_ONCE(swapped,
1704 "Endianness of raw data not corrected!\n")) {
1705 /*
1706 * Inverse of what is done in perf_evsel__parse_sample
1707 */
1708 u.val32[0] = bswap_32(u.val32[0]);
1709 u.val32[1] = bswap_32(u.val32[1]);
1710 u.val64 = bswap_64(u.val64);
1711 }
1712 *array = u.val64;
1713 array = (void *)array + sizeof(u32);
1714
1715 memcpy(array, sample->raw_data, sample->raw_size);
1716 array = (void *)array + sample->raw_size;
1717 }
1718
1719 if (type & PERF_SAMPLE_BRANCH_STACK) {
1720 sz = sample->branch_stack->nr * sizeof(struct branch_entry);
1721 sz += sizeof(u64);
1722 memcpy(array, sample->branch_stack, sz);
1723 array = (void *)array + sz;
1724 }
1725
1726 if (type & PERF_SAMPLE_REGS_USER) {
1727 if (sample->user_regs.abi) {
1728 *array++ = sample->user_regs.abi;
1729 sz = hweight_long(sample_regs_user) * sizeof(u64);
1730 memcpy(array, sample->user_regs.regs, sz);
1731 array = (void *)array + sz;
1732 } else {
1733 *array++ = 0;
1734 }
1735 }
1736
1737 if (type & PERF_SAMPLE_STACK_USER) {
1738 sz = sample->user_stack.size;
1739 *array++ = sz;
1740 if (sz) {
1741 memcpy(array, sample->user_stack.data, sz);
1742 array = (void *)array + sz;
1743 *array++ = sz;
1744 }
1745 }
1746
1747 if (type & PERF_SAMPLE_WEIGHT) {
1748 *array = sample->weight;
1749 array++;
1750 }
1751
1752 if (type & PERF_SAMPLE_DATA_SRC) {
1753 *array = sample->data_src;
1754 array++;
1755 }
1756
42d88910
AH		 1757 if (type & PERF_SAMPLE_TRANSACTION) {
1758 *array = sample->transaction;
1759 array++;
1760 }
1761
74eec26f
AV		 1762 return 0;
1763}
5555ded4 1764
efd2b924
ACM		 1765struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name)
1766{
1767 return pevent_find_field(evsel->tp_format, name);
1768}
1769
5d2074ea 1770void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample,
5555ded4
ACM		 1771 const char *name)
1772{
efd2b924 1773 struct format_field *field = perf_evsel__field(evsel, name);
5555ded4
ACM		 1774 int offset;
1775
efd2b924
ACM		 1776 if (!field)
1777 return NULL;
5555ded4
ACM		 1778
1779 offset = field->offset;
1780
1781 if (field->flags & FIELD_IS_DYNAMIC) {
1782 offset = *(int *)(sample->raw_data + field->offset);
1783 offset &= 0xffff;
1784 }
1785
1786 return sample->raw_data + offset;
1787}
1788
1789u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample,
1790 const char *name)
1791{
efd2b924 1792 struct format_field *field = perf_evsel__field(evsel, name);
e6b6f679
ACM		 1793 void *ptr;
1794 u64 value;
5555ded4 1795
efd2b924
ACM		 1796 if (!field)
1797 return 0;
5555ded4 1798
e6b6f679 1799 ptr = sample->raw_data + field->offset;
5555ded4 1800
e6b6f679
ACM		 1801 switch (field->size) {
1802 case 1:
1803 return *(u8 *)ptr;
1804 case 2:
1805 value = *(u16 *)ptr;
1806 break;
1807 case 4:
1808 value = *(u32 *)ptr;
1809 break;
1810 case 8:
1811 value = *(u64 *)ptr;
1812 break;
1813 default:
1814 return 0;
1815 }
1816
1817 if (!evsel->needs_swap)
1818 return value;
1819
1820 switch (field->size) {
1821 case 2:
1822 return bswap_16(value);
1823 case 4:
1824 return bswap_32(value);
1825 case 8:
1826 return bswap_64(value);
1827 default:
1828 return 0;
1829 }
1830
1831 return 0;
5555ded4 1832}
0698aedd
ACM		 1833
1834static int comma_fprintf(FILE *fp, bool *first, const char *fmt, ...)
1835{
1836 va_list args;
1837 int ret = 0;
1838
1839 if (!*first) {
1840 ret += fprintf(fp, ",");
1841 } else {
1842 ret += fprintf(fp, ":");
1843 *first = false;
1844 }
1845
1846 va_start(args, fmt);
1847 ret += vfprintf(fp, fmt, args);
1848 va_end(args);
1849 return ret;
1850}
1851
1852static int __if_fprintf(FILE *fp, bool *first, const char *field, u64 value)
1853{
1854 if (value == 0)
1855 return 0;
1856
1857 return comma_fprintf(fp, first, " %s: %" PRIu64, field, value);
1858}
1859
1860#define if_print(field) printed += __if_fprintf(fp, &first, #field, evsel->attr.field)
1861
c79a4393
ACM		 1862struct bit_names {
1863 int bit;
1864 const char *name;
1865};
1866
1867static int bits__fprintf(FILE *fp, const char *field, u64 value,
1868 struct bit_names *bits, bool *first)
1869{
1870 int i = 0, printed = comma_fprintf(fp, first, " %s: ", field);
1871 bool first_bit = true;
1872
1873 do {
1874 if (value & bits[i].bit) {
1875 printed += fprintf(fp, "%s%s", first_bit ? "" : "|", bits[i].name);
1876 first_bit = false;
1877 }
1878 } while (bits[++i].name != NULL);
1879
1880 return printed;
1881}
1882
1883static int sample_type__fprintf(FILE *fp, bool *first, u64 value)
1884{
1885#define bit_name(n) { PERF_SAMPLE_##n, #n }
1886 struct bit_names bits[] = {
1887 bit_name(IP), bit_name(TID), bit_name(TIME), bit_name(ADDR),
1888 bit_name(READ), bit_name(CALLCHAIN), bit_name(ID), bit_name(CPU),
1889 bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW),
1890 bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER),
75562573 1891 bit_name(IDENTIFIER),
c79a4393
ACM		 1892 { .name = NULL, }
1893 };
1894#undef bit_name
1895 return bits__fprintf(fp, "sample_type", value, bits, first);
1896}
1897
1898static int read_format__fprintf(FILE *fp, bool *first, u64 value)
1899{
1900#define bit_name(n) { PERF_FORMAT_##n, #n }
1901 struct bit_names bits[] = {
1902 bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING),
1903 bit_name(ID), bit_name(GROUP),
1904 { .name = NULL, }
1905 };
1906#undef bit_name
1907 return bits__fprintf(fp, "read_format", value, bits, first);
1908}
1909
0698aedd
ACM		 1910int perf_evsel__fprintf(struct perf_evsel *evsel,
1911 struct perf_attr_details *details, FILE *fp)
1912{
1913 bool first = true;
e6ab07d0
NK		 1914 int printed = 0;
1915
e35ef355 1916 if (details->event_group) {
e6ab07d0
NK		 1917 struct perf_evsel *pos;
1918
1919 if (!perf_evsel__is_group_leader(evsel))
1920 return 0;
1921
1922 if (evsel->nr_members > 1)
1923 printed += fprintf(fp, "%s{", evsel->group_name ?: "");
1924
1925 printed += fprintf(fp, "%s", perf_evsel__name(evsel));
1926 for_each_group_member(pos, evsel)
1927 printed += fprintf(fp, ",%s", perf_evsel__name(pos));
1928
1929 if (evsel->nr_members > 1)
1930 printed += fprintf(fp, "}");
1931 goto out;
1932 }
1933
1934 printed += fprintf(fp, "%s", perf_evsel__name(evsel));
0698aedd
ACM		 1935
1936 if (details->verbose || details->freq) {
1937 printed += comma_fprintf(fp, &first, " sample_freq=%" PRIu64,
1938 (u64)evsel->attr.sample_freq);
1939 }
1940
1941 if (details->verbose) {
1942 if_print(type);
1943 if_print(config);
1944 if_print(config1);
1945 if_print(config2);
1946 if_print(size);
c79a4393
ACM		 1947 printed += sample_type__fprintf(fp, &first, evsel->attr.sample_type);
1948 if (evsel->attr.read_format)
1949 printed += read_format__fprintf(fp, &first, evsel->attr.read_format);
0698aedd
ACM		 1950 if_print(disabled);
1951 if_print(inherit);
1952 if_print(pinned);
1953 if_print(exclusive);
1954 if_print(exclude_user);
1955 if_print(exclude_kernel);
1956 if_print(exclude_hv);
1957 if_print(exclude_idle);
1958 if_print(mmap);
5c5e854b 1959 if_print(mmap2);
0698aedd
ACM		 1960 if_print(comm);
1961 if_print(freq);
1962 if_print(inherit_stat);
1963 if_print(enable_on_exec);
1964 if_print(task);
1965 if_print(watermark);
1966 if_print(precise_ip);
1967 if_print(mmap_data);
1968 if_print(sample_id_all);
1969 if_print(exclude_host);
1970 if_print(exclude_guest);
1971 if_print(__reserved_1);
1972 if_print(wakeup_events);
1973 if_print(bp_type);
1974 if_print(branch_sample_type);
1975 }
e6ab07d0 1976out:
0698aedd
ACM		 1977 fputc('\n', fp);
1978 return ++printed;
1979}
c0a54341
ACM		 1980
1981bool perf_evsel__fallback(struct perf_evsel *evsel, int err,
1982 char *msg, size_t msgsize)
1983{
2b821cce 1984 if ((err == ENOENT || err == ENXIO || err == ENODEV) &&
c0a54341
ACM		 1985 evsel->attr.type == PERF_TYPE_HARDWARE &&
1986 evsel->attr.config == PERF_COUNT_HW_CPU_CYCLES) {
1987 /*
1988 * If it's cycles then fall back to hrtimer based
1989 * cpu-clock-tick sw counter, which is always available even if
1990 * no PMU support.
1991 *
1992 * PPC returns ENXIO until 2.6.37 (behavior changed with commit
1993 * b0a873e).
1994 */
1995 scnprintf(msg, msgsize, "%s",
1996"The cycles event is not supported, trying to fall back to cpu-clock-ticks");
1997
1998 evsel->attr.type = PERF_TYPE_SOFTWARE;
1999 evsel->attr.config = PERF_COUNT_SW_CPU_CLOCK;
2000
2001 free(evsel->name);
2002 evsel->name = NULL;
2003 return true;
2004 }
2005
2006 return false;
2007}
56e52e85
ACM		 2008
2009int perf_evsel__open_strerror(struct perf_evsel *evsel,
2010 struct perf_target *target,
2011 int err, char *msg, size_t size)
2012{
2013 switch (err) {
2014 case EPERM:
2015 case EACCES:
b69e63a4 2016 return scnprintf(msg, size,
56e52e85
ACM		 2017 "You may not have permission to collect %sstats.\n"
2018 "Consider tweaking /proc/sys/kernel/perf_event_paranoid:\n"
2019 " -1 - Not paranoid at all\n"
2020 " 0 - Disallow raw tracepoint access for unpriv\n"
2021 " 1 - Disallow cpu events for unpriv\n"
2022 " 2 - Disallow kernel profiling for unpriv",
2023 target->system_wide ? "system-wide " : "");
2024 case ENOENT:
2025 return scnprintf(msg, size, "The %s event is not supported.",
2026 perf_evsel__name(evsel));
2027 case EMFILE:
2028 return scnprintf(msg, size, "%s",
2029 "Too many events are opened.\n"
2030 "Try again after reducing the number of events.");
2031 case ENODEV:
2032 if (target->cpu_list)
2033 return scnprintf(msg, size, "%s",
2034 "No such device - did you specify an out-of-range profile CPU?\n");
2035 break;
2036 case EOPNOTSUPP:
2037 if (evsel->attr.precise_ip)
2038 return scnprintf(msg, size, "%s",
2039 "\'precise\' request may not be supported. Try removing 'p' modifier.");
2040#if defined(__i386__) || defined(__x86_64__)
2041 if (evsel->attr.type == PERF_TYPE_HARDWARE)
2042 return scnprintf(msg, size, "%s",
2043 "No hardware sampling interrupt available.\n"
2044 "No APIC? If so then you can boot the kernel with the \"lapic\" boot parameter to force-enable it.");
2045#endif
2046 break;
2047 default:
2048 break;
2049 }
2050
2051 return scnprintf(msg, size,
2052 "The sys_perf_event_open() syscall returned with %d (%s) for event (%s). \n"
2053 "/bin/dmesg may provide additional information.\n"
2054 "No CONFIG_PERF_EVENTS=y kernel support configured?\n",
2055 err, strerror(err), perf_evsel__name(evsel));
2056}
Linux 6.x block layer and io_uring tree(s)