Commit | Line | Data |
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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> |
936be503 | 12 | #include "asm/bug.h" |
efd2b924 | 13 | #include "debugfs.h" |
5555ded4 | 14 | #include "event-parse.h" |
69aad6f1 | 15 | #include "evsel.h" |
70082dd9 | 16 | #include "evlist.h" |
69aad6f1 | 17 | #include "util.h" |
86bd5e86 | 18 | #include "cpumap.h" |
fd78260b | 19 | #include "thread_map.h" |
12864b31 | 20 | #include "target.h" |
d2709c7c DH |
21 | #include <linux/hw_breakpoint.h> |
22 | #include <linux/perf_event.h> | |
26d33022 | 23 | #include "perf_regs.h" |
69aad6f1 | 24 | |
c52b12ed ACM |
25 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
26 | ||
bde09467 | 27 | static int __perf_evsel__sample_size(u64 sample_type) |
c2a70653 ACM |
28 | { |
29 | u64 mask = sample_type & PERF_SAMPLE_MASK; | |
30 | int size = 0; | |
31 | int i; | |
32 | ||
33 | for (i = 0; i < 64; i++) { | |
34 | if (mask & (1ULL << i)) | |
35 | size++; | |
36 | } | |
37 | ||
38 | size *= sizeof(u64); | |
39 | ||
40 | return size; | |
41 | } | |
42 | ||
4bf9ce1b | 43 | void hists__init(struct hists *hists) |
0e2a5f10 ACM |
44 | { |
45 | memset(hists, 0, sizeof(*hists)); | |
46 | hists->entries_in_array[0] = hists->entries_in_array[1] = RB_ROOT; | |
47 | hists->entries_in = &hists->entries_in_array[0]; | |
48 | hists->entries_collapsed = RB_ROOT; | |
49 | hists->entries = RB_ROOT; | |
50 | pthread_mutex_init(&hists->lock, NULL); | |
51 | } | |
52 | ||
ef1d1af2 ACM |
53 | void perf_evsel__init(struct perf_evsel *evsel, |
54 | struct perf_event_attr *attr, int idx) | |
55 | { | |
56 | evsel->idx = idx; | |
57 | evsel->attr = *attr; | |
58 | INIT_LIST_HEAD(&evsel->node); | |
1980c2eb | 59 | hists__init(&evsel->hists); |
bde09467 | 60 | evsel->sample_size = __perf_evsel__sample_size(attr->sample_type); |
ef1d1af2 ACM |
61 | } |
62 | ||
23a2f3ab | 63 | struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx) |
69aad6f1 ACM |
64 | { |
65 | struct perf_evsel *evsel = zalloc(sizeof(*evsel)); | |
66 | ||
ef1d1af2 ACM |
67 | if (evsel != NULL) |
68 | perf_evsel__init(evsel, attr, idx); | |
69aad6f1 ACM |
69 | |
70 | return evsel; | |
71 | } | |
72 | ||
201b7334 | 73 | struct event_format *event_format__new(const char *sys, const char *name) |
efd2b924 ACM |
74 | { |
75 | int fd, n; | |
76 | char *filename; | |
77 | void *bf = NULL, *nbf; | |
78 | size_t size = 0, alloc_size = 0; | |
79 | struct event_format *format = NULL; | |
80 | ||
81 | if (asprintf(&filename, "%s/%s/%s/format", tracing_events_path, sys, name) < 0) | |
82 | goto out; | |
83 | ||
84 | fd = open(filename, O_RDONLY); | |
85 | if (fd < 0) | |
86 | goto out_free_filename; | |
87 | ||
88 | do { | |
89 | if (size == alloc_size) { | |
90 | alloc_size += BUFSIZ; | |
91 | nbf = realloc(bf, alloc_size); | |
92 | if (nbf == NULL) | |
93 | goto out_free_bf; | |
94 | bf = nbf; | |
95 | } | |
96 | ||
97 | n = read(fd, bf + size, BUFSIZ); | |
98 | if (n < 0) | |
99 | goto out_free_bf; | |
100 | size += n; | |
101 | } while (n > 0); | |
102 | ||
103 | pevent_parse_format(&format, bf, size, sys); | |
104 | ||
105 | out_free_bf: | |
106 | free(bf); | |
107 | close(fd); | |
108 | out_free_filename: | |
109 | free(filename); | |
110 | out: | |
111 | return format; | |
112 | } | |
113 | ||
114 | struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name, int idx) | |
115 | { | |
116 | struct perf_evsel *evsel = zalloc(sizeof(*evsel)); | |
117 | ||
118 | if (evsel != NULL) { | |
119 | struct perf_event_attr attr = { | |
0b80f8b3 ACM |
120 | .type = PERF_TYPE_TRACEPOINT, |
121 | .sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | | |
122 | PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), | |
efd2b924 ACM |
123 | }; |
124 | ||
e48ffe2b ACM |
125 | if (asprintf(&evsel->name, "%s:%s", sys, name) < 0) |
126 | goto out_free; | |
127 | ||
efd2b924 ACM |
128 | evsel->tp_format = event_format__new(sys, name); |
129 | if (evsel->tp_format == NULL) | |
130 | goto out_free; | |
131 | ||
0b80f8b3 | 132 | event_attr_init(&attr); |
efd2b924 | 133 | attr.config = evsel->tp_format->id; |
0b80f8b3 | 134 | attr.sample_period = 1; |
efd2b924 | 135 | perf_evsel__init(evsel, &attr, idx); |
efd2b924 ACM |
136 | } |
137 | ||
138 | return evsel; | |
139 | ||
140 | out_free: | |
e48ffe2b | 141 | free(evsel->name); |
efd2b924 ACM |
142 | free(evsel); |
143 | return NULL; | |
144 | } | |
145 | ||
8ad7013b | 146 | const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = { |
c410431c ACM |
147 | "cycles", |
148 | "instructions", | |
149 | "cache-references", | |
150 | "cache-misses", | |
151 | "branches", | |
152 | "branch-misses", | |
153 | "bus-cycles", | |
154 | "stalled-cycles-frontend", | |
155 | "stalled-cycles-backend", | |
156 | "ref-cycles", | |
157 | }; | |
158 | ||
dd4f5223 | 159 | static const char *__perf_evsel__hw_name(u64 config) |
c410431c ACM |
160 | { |
161 | if (config < PERF_COUNT_HW_MAX && perf_evsel__hw_names[config]) | |
162 | return perf_evsel__hw_names[config]; | |
163 | ||
164 | return "unknown-hardware"; | |
165 | } | |
166 | ||
27f18617 | 167 | static int perf_evsel__add_modifiers(struct perf_evsel *evsel, char *bf, size_t size) |
c410431c | 168 | { |
27f18617 | 169 | int colon = 0, r = 0; |
c410431c | 170 | struct perf_event_attr *attr = &evsel->attr; |
c410431c ACM |
171 | bool exclude_guest_default = false; |
172 | ||
173 | #define MOD_PRINT(context, mod) do { \ | |
174 | if (!attr->exclude_##context) { \ | |
27f18617 | 175 | if (!colon) colon = ++r; \ |
c410431c ACM |
176 | r += scnprintf(bf + r, size - r, "%c", mod); \ |
177 | } } while(0) | |
178 | ||
179 | if (attr->exclude_kernel || attr->exclude_user || attr->exclude_hv) { | |
180 | MOD_PRINT(kernel, 'k'); | |
181 | MOD_PRINT(user, 'u'); | |
182 | MOD_PRINT(hv, 'h'); | |
183 | exclude_guest_default = true; | |
184 | } | |
185 | ||
186 | if (attr->precise_ip) { | |
187 | if (!colon) | |
27f18617 | 188 | colon = ++r; |
c410431c ACM |
189 | r += scnprintf(bf + r, size - r, "%.*s", attr->precise_ip, "ppp"); |
190 | exclude_guest_default = true; | |
191 | } | |
192 | ||
193 | if (attr->exclude_host || attr->exclude_guest == exclude_guest_default) { | |
194 | MOD_PRINT(host, 'H'); | |
195 | MOD_PRINT(guest, 'G'); | |
196 | } | |
197 | #undef MOD_PRINT | |
198 | if (colon) | |
27f18617 | 199 | bf[colon - 1] = ':'; |
c410431c ACM |
200 | return r; |
201 | } | |
202 | ||
27f18617 ACM |
203 | static int perf_evsel__hw_name(struct perf_evsel *evsel, char *bf, size_t size) |
204 | { | |
205 | int r = scnprintf(bf, size, "%s", __perf_evsel__hw_name(evsel->attr.config)); | |
206 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
207 | } | |
208 | ||
8ad7013b | 209 | const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = { |
335c2f5d ACM |
210 | "cpu-clock", |
211 | "task-clock", | |
212 | "page-faults", | |
213 | "context-switches", | |
8ad7013b | 214 | "cpu-migrations", |
335c2f5d ACM |
215 | "minor-faults", |
216 | "major-faults", | |
217 | "alignment-faults", | |
218 | "emulation-faults", | |
219 | }; | |
220 | ||
dd4f5223 | 221 | static const char *__perf_evsel__sw_name(u64 config) |
335c2f5d ACM |
222 | { |
223 | if (config < PERF_COUNT_SW_MAX && perf_evsel__sw_names[config]) | |
224 | return perf_evsel__sw_names[config]; | |
225 | return "unknown-software"; | |
226 | } | |
227 | ||
228 | static int perf_evsel__sw_name(struct perf_evsel *evsel, char *bf, size_t size) | |
229 | { | |
230 | int r = scnprintf(bf, size, "%s", __perf_evsel__sw_name(evsel->attr.config)); | |
231 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
232 | } | |
233 | ||
287e74aa JO |
234 | static int __perf_evsel__bp_name(char *bf, size_t size, u64 addr, u64 type) |
235 | { | |
236 | int r; | |
237 | ||
238 | r = scnprintf(bf, size, "mem:0x%" PRIx64 ":", addr); | |
239 | ||
240 | if (type & HW_BREAKPOINT_R) | |
241 | r += scnprintf(bf + r, size - r, "r"); | |
242 | ||
243 | if (type & HW_BREAKPOINT_W) | |
244 | r += scnprintf(bf + r, size - r, "w"); | |
245 | ||
246 | if (type & HW_BREAKPOINT_X) | |
247 | r += scnprintf(bf + r, size - r, "x"); | |
248 | ||
249 | return r; | |
250 | } | |
251 | ||
252 | static int perf_evsel__bp_name(struct perf_evsel *evsel, char *bf, size_t size) | |
253 | { | |
254 | struct perf_event_attr *attr = &evsel->attr; | |
255 | int r = __perf_evsel__bp_name(bf, size, attr->bp_addr, attr->bp_type); | |
256 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
257 | } | |
258 | ||
0b668bc9 ACM |
259 | const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] |
260 | [PERF_EVSEL__MAX_ALIASES] = { | |
261 | { "L1-dcache", "l1-d", "l1d", "L1-data", }, | |
262 | { "L1-icache", "l1-i", "l1i", "L1-instruction", }, | |
263 | { "LLC", "L2", }, | |
264 | { "dTLB", "d-tlb", "Data-TLB", }, | |
265 | { "iTLB", "i-tlb", "Instruction-TLB", }, | |
266 | { "branch", "branches", "bpu", "btb", "bpc", }, | |
267 | { "node", }, | |
268 | }; | |
269 | ||
270 | const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] | |
271 | [PERF_EVSEL__MAX_ALIASES] = { | |
272 | { "load", "loads", "read", }, | |
273 | { "store", "stores", "write", }, | |
274 | { "prefetch", "prefetches", "speculative-read", "speculative-load", }, | |
275 | }; | |
276 | ||
277 | const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] | |
278 | [PERF_EVSEL__MAX_ALIASES] = { | |
279 | { "refs", "Reference", "ops", "access", }, | |
280 | { "misses", "miss", }, | |
281 | }; | |
282 | ||
283 | #define C(x) PERF_COUNT_HW_CACHE_##x | |
284 | #define CACHE_READ (1 << C(OP_READ)) | |
285 | #define CACHE_WRITE (1 << C(OP_WRITE)) | |
286 | #define CACHE_PREFETCH (1 << C(OP_PREFETCH)) | |
287 | #define COP(x) (1 << x) | |
288 | ||
289 | /* | |
290 | * cache operartion stat | |
291 | * L1I : Read and prefetch only | |
292 | * ITLB and BPU : Read-only | |
293 | */ | |
294 | static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = { | |
295 | [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
296 | [C(L1I)] = (CACHE_READ | CACHE_PREFETCH), | |
297 | [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
298 | [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
299 | [C(ITLB)] = (CACHE_READ), | |
300 | [C(BPU)] = (CACHE_READ), | |
301 | [C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
302 | }; | |
303 | ||
304 | bool perf_evsel__is_cache_op_valid(u8 type, u8 op) | |
305 | { | |
306 | if (perf_evsel__hw_cache_stat[type] & COP(op)) | |
307 | return true; /* valid */ | |
308 | else | |
309 | return false; /* invalid */ | |
310 | } | |
311 | ||
312 | int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, | |
313 | char *bf, size_t size) | |
314 | { | |
315 | if (result) { | |
316 | return scnprintf(bf, size, "%s-%s-%s", perf_evsel__hw_cache[type][0], | |
317 | perf_evsel__hw_cache_op[op][0], | |
318 | perf_evsel__hw_cache_result[result][0]); | |
319 | } | |
320 | ||
321 | return scnprintf(bf, size, "%s-%s", perf_evsel__hw_cache[type][0], | |
322 | perf_evsel__hw_cache_op[op][1]); | |
323 | } | |
324 | ||
dd4f5223 | 325 | static int __perf_evsel__hw_cache_name(u64 config, char *bf, size_t size) |
0b668bc9 ACM |
326 | { |
327 | u8 op, result, type = (config >> 0) & 0xff; | |
328 | const char *err = "unknown-ext-hardware-cache-type"; | |
329 | ||
330 | if (type > PERF_COUNT_HW_CACHE_MAX) | |
331 | goto out_err; | |
332 | ||
333 | op = (config >> 8) & 0xff; | |
334 | err = "unknown-ext-hardware-cache-op"; | |
335 | if (op > PERF_COUNT_HW_CACHE_OP_MAX) | |
336 | goto out_err; | |
337 | ||
338 | result = (config >> 16) & 0xff; | |
339 | err = "unknown-ext-hardware-cache-result"; | |
340 | if (result > PERF_COUNT_HW_CACHE_RESULT_MAX) | |
341 | goto out_err; | |
342 | ||
343 | err = "invalid-cache"; | |
344 | if (!perf_evsel__is_cache_op_valid(type, op)) | |
345 | goto out_err; | |
346 | ||
347 | return __perf_evsel__hw_cache_type_op_res_name(type, op, result, bf, size); | |
348 | out_err: | |
349 | return scnprintf(bf, size, "%s", err); | |
350 | } | |
351 | ||
352 | static int perf_evsel__hw_cache_name(struct perf_evsel *evsel, char *bf, size_t size) | |
353 | { | |
354 | int ret = __perf_evsel__hw_cache_name(evsel->attr.config, bf, size); | |
355 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); | |
356 | } | |
357 | ||
6eef3d9c ACM |
358 | static int perf_evsel__raw_name(struct perf_evsel *evsel, char *bf, size_t size) |
359 | { | |
360 | int ret = scnprintf(bf, size, "raw 0x%" PRIx64, evsel->attr.config); | |
361 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); | |
362 | } | |
363 | ||
7289f83c | 364 | const char *perf_evsel__name(struct perf_evsel *evsel) |
a4460836 | 365 | { |
7289f83c | 366 | char bf[128]; |
a4460836 | 367 | |
7289f83c ACM |
368 | if (evsel->name) |
369 | return evsel->name; | |
c410431c ACM |
370 | |
371 | switch (evsel->attr.type) { | |
372 | case PERF_TYPE_RAW: | |
6eef3d9c | 373 | perf_evsel__raw_name(evsel, bf, sizeof(bf)); |
c410431c ACM |
374 | break; |
375 | ||
376 | case PERF_TYPE_HARDWARE: | |
7289f83c | 377 | perf_evsel__hw_name(evsel, bf, sizeof(bf)); |
c410431c | 378 | break; |
0b668bc9 ACM |
379 | |
380 | case PERF_TYPE_HW_CACHE: | |
7289f83c | 381 | perf_evsel__hw_cache_name(evsel, bf, sizeof(bf)); |
0b668bc9 ACM |
382 | break; |
383 | ||
335c2f5d | 384 | case PERF_TYPE_SOFTWARE: |
7289f83c | 385 | perf_evsel__sw_name(evsel, bf, sizeof(bf)); |
335c2f5d ACM |
386 | break; |
387 | ||
a4460836 | 388 | case PERF_TYPE_TRACEPOINT: |
7289f83c | 389 | scnprintf(bf, sizeof(bf), "%s", "unknown tracepoint"); |
a4460836 ACM |
390 | break; |
391 | ||
287e74aa JO |
392 | case PERF_TYPE_BREAKPOINT: |
393 | perf_evsel__bp_name(evsel, bf, sizeof(bf)); | |
394 | break; | |
395 | ||
c410431c | 396 | default: |
ca1b1457 RR |
397 | scnprintf(bf, sizeof(bf), "unknown attr type: %d", |
398 | evsel->attr.type); | |
a4460836 | 399 | break; |
c410431c ACM |
400 | } |
401 | ||
7289f83c ACM |
402 | evsel->name = strdup(bf); |
403 | ||
404 | return evsel->name ?: "unknown"; | |
c410431c ACM |
405 | } |
406 | ||
5090c6ae NK |
407 | void perf_evsel__config(struct perf_evsel *evsel, struct perf_record_opts *opts, |
408 | struct perf_evsel *first) | |
0f82ebc4 ACM |
409 | { |
410 | struct perf_event_attr *attr = &evsel->attr; | |
411 | int track = !evsel->idx; /* only the first counter needs these */ | |
412 | ||
5e1c81d9 | 413 | attr->disabled = 1; |
808e1226 | 414 | attr->sample_id_all = opts->sample_id_all_missing ? 0 : 1; |
0f82ebc4 ACM |
415 | attr->inherit = !opts->no_inherit; |
416 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | | |
417 | PERF_FORMAT_TOTAL_TIME_RUNNING | | |
418 | PERF_FORMAT_ID; | |
419 | ||
420 | attr->sample_type |= PERF_SAMPLE_IP | PERF_SAMPLE_TID; | |
421 | ||
422 | /* | |
423 | * We default some events to a 1 default interval. But keep | |
424 | * it a weak assumption overridable by the user. | |
425 | */ | |
426 | if (!attr->sample_period || (opts->user_freq != UINT_MAX && | |
427 | opts->user_interval != ULLONG_MAX)) { | |
428 | if (opts->freq) { | |
429 | attr->sample_type |= PERF_SAMPLE_PERIOD; | |
430 | attr->freq = 1; | |
431 | attr->sample_freq = opts->freq; | |
432 | } else { | |
433 | attr->sample_period = opts->default_interval; | |
434 | } | |
435 | } | |
436 | ||
437 | if (opts->no_samples) | |
438 | attr->sample_freq = 0; | |
439 | ||
440 | if (opts->inherit_stat) | |
441 | attr->inherit_stat = 1; | |
442 | ||
443 | if (opts->sample_address) { | |
444 | attr->sample_type |= PERF_SAMPLE_ADDR; | |
445 | attr->mmap_data = track; | |
446 | } | |
447 | ||
26d33022 | 448 | if (opts->call_graph) { |
0f82ebc4 ACM |
449 | attr->sample_type |= PERF_SAMPLE_CALLCHAIN; |
450 | ||
26d33022 JO |
451 | if (opts->call_graph == CALLCHAIN_DWARF) { |
452 | attr->sample_type |= PERF_SAMPLE_REGS_USER | | |
453 | PERF_SAMPLE_STACK_USER; | |
454 | attr->sample_regs_user = PERF_REGS_MASK; | |
455 | attr->sample_stack_user = opts->stack_dump_size; | |
456 | attr->exclude_callchain_user = 1; | |
457 | } | |
458 | } | |
459 | ||
e40ee742 | 460 | if (perf_target__has_cpu(&opts->target)) |
0f82ebc4 ACM |
461 | attr->sample_type |= PERF_SAMPLE_CPU; |
462 | ||
3e76ac78 AV |
463 | if (opts->period) |
464 | attr->sample_type |= PERF_SAMPLE_PERIOD; | |
465 | ||
808e1226 | 466 | if (!opts->sample_id_all_missing && |
d67356e7 | 467 | (opts->sample_time || !opts->no_inherit || |
aa22dd49 | 468 | perf_target__has_cpu(&opts->target))) |
0f82ebc4 ACM |
469 | attr->sample_type |= PERF_SAMPLE_TIME; |
470 | ||
471 | if (opts->raw_samples) { | |
472 | attr->sample_type |= PERF_SAMPLE_TIME; | |
473 | attr->sample_type |= PERF_SAMPLE_RAW; | |
474 | attr->sample_type |= PERF_SAMPLE_CPU; | |
475 | } | |
476 | ||
477 | if (opts->no_delay) { | |
478 | attr->watermark = 0; | |
479 | attr->wakeup_events = 1; | |
480 | } | |
bdfebd84 RAV |
481 | if (opts->branch_stack) { |
482 | attr->sample_type |= PERF_SAMPLE_BRANCH_STACK; | |
483 | attr->branch_sample_type = opts->branch_stack; | |
484 | } | |
0f82ebc4 ACM |
485 | |
486 | attr->mmap = track; | |
487 | attr->comm = track; | |
488 | ||
d67356e7 NK |
489 | if (perf_target__none(&opts->target) && |
490 | (!opts->group || evsel == first)) { | |
0f82ebc4 ACM |
491 | attr->enable_on_exec = 1; |
492 | } | |
493 | } | |
494 | ||
69aad6f1 ACM |
495 | int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads) |
496 | { | |
4af4c955 | 497 | int cpu, thread; |
69aad6f1 | 498 | evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int)); |
4af4c955 DA |
499 | |
500 | if (evsel->fd) { | |
501 | for (cpu = 0; cpu < ncpus; cpu++) { | |
502 | for (thread = 0; thread < nthreads; thread++) { | |
503 | FD(evsel, cpu, thread) = -1; | |
504 | } | |
505 | } | |
506 | } | |
507 | ||
69aad6f1 ACM |
508 | return evsel->fd != NULL ? 0 : -ENOMEM; |
509 | } | |
510 | ||
745cefc5 ACM |
511 | int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads, |
512 | const char *filter) | |
513 | { | |
514 | int cpu, thread; | |
515 | ||
516 | for (cpu = 0; cpu < ncpus; cpu++) { | |
517 | for (thread = 0; thread < nthreads; thread++) { | |
518 | int fd = FD(evsel, cpu, thread), | |
519 | err = ioctl(fd, PERF_EVENT_IOC_SET_FILTER, filter); | |
520 | ||
521 | if (err) | |
522 | return err; | |
523 | } | |
524 | } | |
525 | ||
526 | return 0; | |
527 | } | |
528 | ||
70db7533 ACM |
529 | int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads) |
530 | { | |
a91e5431 ACM |
531 | evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id)); |
532 | if (evsel->sample_id == NULL) | |
533 | return -ENOMEM; | |
534 | ||
535 | evsel->id = zalloc(ncpus * nthreads * sizeof(u64)); | |
536 | if (evsel->id == NULL) { | |
537 | xyarray__delete(evsel->sample_id); | |
538 | evsel->sample_id = NULL; | |
539 | return -ENOMEM; | |
540 | } | |
541 | ||
542 | return 0; | |
70db7533 ACM |
543 | } |
544 | ||
c52b12ed ACM |
545 | int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus) |
546 | { | |
547 | evsel->counts = zalloc((sizeof(*evsel->counts) + | |
548 | (ncpus * sizeof(struct perf_counts_values)))); | |
549 | return evsel->counts != NULL ? 0 : -ENOMEM; | |
550 | } | |
551 | ||
69aad6f1 ACM |
552 | void perf_evsel__free_fd(struct perf_evsel *evsel) |
553 | { | |
554 | xyarray__delete(evsel->fd); | |
555 | evsel->fd = NULL; | |
556 | } | |
557 | ||
70db7533 ACM |
558 | void perf_evsel__free_id(struct perf_evsel *evsel) |
559 | { | |
a91e5431 ACM |
560 | xyarray__delete(evsel->sample_id); |
561 | evsel->sample_id = NULL; | |
562 | free(evsel->id); | |
70db7533 ACM |
563 | evsel->id = NULL; |
564 | } | |
565 | ||
c52b12ed ACM |
566 | void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads) |
567 | { | |
568 | int cpu, thread; | |
569 | ||
570 | for (cpu = 0; cpu < ncpus; cpu++) | |
571 | for (thread = 0; thread < nthreads; ++thread) { | |
572 | close(FD(evsel, cpu, thread)); | |
573 | FD(evsel, cpu, thread) = -1; | |
574 | } | |
575 | } | |
576 | ||
ef1d1af2 | 577 | void perf_evsel__exit(struct perf_evsel *evsel) |
69aad6f1 ACM |
578 | { |
579 | assert(list_empty(&evsel->node)); | |
580 | xyarray__delete(evsel->fd); | |
a91e5431 ACM |
581 | xyarray__delete(evsel->sample_id); |
582 | free(evsel->id); | |
ef1d1af2 ACM |
583 | } |
584 | ||
585 | void perf_evsel__delete(struct perf_evsel *evsel) | |
586 | { | |
587 | perf_evsel__exit(evsel); | |
023695d9 | 588 | close_cgroup(evsel->cgrp); |
6a4bb04c | 589 | free(evsel->group_name); |
e48ffe2b | 590 | if (evsel->tp_format) |
efd2b924 | 591 | pevent_free_format(evsel->tp_format); |
f0c55bcf | 592 | free(evsel->name); |
69aad6f1 ACM |
593 | free(evsel); |
594 | } | |
c52b12ed ACM |
595 | |
596 | int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, | |
597 | int cpu, int thread, bool scale) | |
598 | { | |
599 | struct perf_counts_values count; | |
600 | size_t nv = scale ? 3 : 1; | |
601 | ||
602 | if (FD(evsel, cpu, thread) < 0) | |
603 | return -EINVAL; | |
604 | ||
4eed11d5 ACM |
605 | if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1) < 0) |
606 | return -ENOMEM; | |
607 | ||
c52b12ed ACM |
608 | if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) < 0) |
609 | return -errno; | |
610 | ||
611 | if (scale) { | |
612 | if (count.run == 0) | |
613 | count.val = 0; | |
614 | else if (count.run < count.ena) | |
615 | count.val = (u64)((double)count.val * count.ena / count.run + 0.5); | |
616 | } else | |
617 | count.ena = count.run = 0; | |
618 | ||
619 | evsel->counts->cpu[cpu] = count; | |
620 | return 0; | |
621 | } | |
622 | ||
623 | int __perf_evsel__read(struct perf_evsel *evsel, | |
624 | int ncpus, int nthreads, bool scale) | |
625 | { | |
626 | size_t nv = scale ? 3 : 1; | |
627 | int cpu, thread; | |
628 | struct perf_counts_values *aggr = &evsel->counts->aggr, count; | |
629 | ||
52bcd994 | 630 | aggr->val = aggr->ena = aggr->run = 0; |
c52b12ed ACM |
631 | |
632 | for (cpu = 0; cpu < ncpus; cpu++) { | |
633 | for (thread = 0; thread < nthreads; thread++) { | |
634 | if (FD(evsel, cpu, thread) < 0) | |
635 | continue; | |
636 | ||
637 | if (readn(FD(evsel, cpu, thread), | |
638 | &count, nv * sizeof(u64)) < 0) | |
639 | return -errno; | |
640 | ||
641 | aggr->val += count.val; | |
642 | if (scale) { | |
643 | aggr->ena += count.ena; | |
644 | aggr->run += count.run; | |
645 | } | |
646 | } | |
647 | } | |
648 | ||
649 | evsel->counts->scaled = 0; | |
650 | if (scale) { | |
651 | if (aggr->run == 0) { | |
652 | evsel->counts->scaled = -1; | |
653 | aggr->val = 0; | |
654 | return 0; | |
655 | } | |
656 | ||
657 | if (aggr->run < aggr->ena) { | |
658 | evsel->counts->scaled = 1; | |
659 | aggr->val = (u64)((double)aggr->val * aggr->ena / aggr->run + 0.5); | |
660 | } | |
661 | } else | |
662 | aggr->ena = aggr->run = 0; | |
663 | ||
664 | return 0; | |
665 | } | |
48290609 | 666 | |
6a4bb04c JO |
667 | static int get_group_fd(struct perf_evsel *evsel, int cpu, int thread) |
668 | { | |
669 | struct perf_evsel *leader = evsel->leader; | |
670 | int fd; | |
671 | ||
672 | if (!leader) | |
673 | return -1; | |
674 | ||
675 | /* | |
676 | * Leader must be already processed/open, | |
677 | * if not it's a bug. | |
678 | */ | |
679 | BUG_ON(!leader->fd); | |
680 | ||
681 | fd = FD(leader, cpu, thread); | |
682 | BUG_ON(fd == -1); | |
683 | ||
684 | return fd; | |
685 | } | |
686 | ||
0252208e | 687 | static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, |
6a4bb04c | 688 | struct thread_map *threads) |
48290609 | 689 | { |
0252208e | 690 | int cpu, thread; |
023695d9 | 691 | unsigned long flags = 0; |
727ab04e | 692 | int pid = -1, err; |
48290609 | 693 | |
0252208e ACM |
694 | if (evsel->fd == NULL && |
695 | perf_evsel__alloc_fd(evsel, cpus->nr, threads->nr) < 0) | |
727ab04e | 696 | return -ENOMEM; |
4eed11d5 | 697 | |
023695d9 SE |
698 | if (evsel->cgrp) { |
699 | flags = PERF_FLAG_PID_CGROUP; | |
700 | pid = evsel->cgrp->fd; | |
701 | } | |
702 | ||
86bd5e86 | 703 | for (cpu = 0; cpu < cpus->nr; cpu++) { |
9d04f178 | 704 | |
0252208e | 705 | for (thread = 0; thread < threads->nr; thread++) { |
6a4bb04c | 706 | int group_fd; |
023695d9 SE |
707 | |
708 | if (!evsel->cgrp) | |
709 | pid = threads->map[thread]; | |
710 | ||
6a4bb04c JO |
711 | group_fd = get_group_fd(evsel, cpu, thread); |
712 | ||
0252208e | 713 | FD(evsel, cpu, thread) = sys_perf_event_open(&evsel->attr, |
023695d9 | 714 | pid, |
f08199d3 | 715 | cpus->map[cpu], |
023695d9 | 716 | group_fd, flags); |
727ab04e ACM |
717 | if (FD(evsel, cpu, thread) < 0) { |
718 | err = -errno; | |
0252208e | 719 | goto out_close; |
727ab04e | 720 | } |
0252208e | 721 | } |
48290609 ACM |
722 | } |
723 | ||
724 | return 0; | |
725 | ||
726 | out_close: | |
0252208e ACM |
727 | do { |
728 | while (--thread >= 0) { | |
729 | close(FD(evsel, cpu, thread)); | |
730 | FD(evsel, cpu, thread) = -1; | |
731 | } | |
732 | thread = threads->nr; | |
733 | } while (--cpu >= 0); | |
727ab04e ACM |
734 | return err; |
735 | } | |
736 | ||
737 | void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads) | |
738 | { | |
739 | if (evsel->fd == NULL) | |
740 | return; | |
741 | ||
742 | perf_evsel__close_fd(evsel, ncpus, nthreads); | |
743 | perf_evsel__free_fd(evsel); | |
744 | evsel->fd = NULL; | |
48290609 ACM |
745 | } |
746 | ||
0252208e ACM |
747 | static struct { |
748 | struct cpu_map map; | |
749 | int cpus[1]; | |
750 | } empty_cpu_map = { | |
751 | .map.nr = 1, | |
752 | .cpus = { -1, }, | |
753 | }; | |
754 | ||
755 | static struct { | |
756 | struct thread_map map; | |
757 | int threads[1]; | |
758 | } empty_thread_map = { | |
759 | .map.nr = 1, | |
760 | .threads = { -1, }, | |
761 | }; | |
762 | ||
f08199d3 | 763 | int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, |
6a4bb04c | 764 | struct thread_map *threads) |
48290609 | 765 | { |
0252208e ACM |
766 | if (cpus == NULL) { |
767 | /* Work around old compiler warnings about strict aliasing */ | |
768 | cpus = &empty_cpu_map.map; | |
48290609 ACM |
769 | } |
770 | ||
0252208e ACM |
771 | if (threads == NULL) |
772 | threads = &empty_thread_map.map; | |
48290609 | 773 | |
6a4bb04c | 774 | return __perf_evsel__open(evsel, cpus, threads); |
48290609 ACM |
775 | } |
776 | ||
f08199d3 | 777 | int perf_evsel__open_per_cpu(struct perf_evsel *evsel, |
6a4bb04c | 778 | struct cpu_map *cpus) |
48290609 | 779 | { |
6a4bb04c | 780 | return __perf_evsel__open(evsel, cpus, &empty_thread_map.map); |
0252208e | 781 | } |
48290609 | 782 | |
f08199d3 | 783 | int perf_evsel__open_per_thread(struct perf_evsel *evsel, |
6a4bb04c | 784 | struct thread_map *threads) |
0252208e | 785 | { |
6a4bb04c | 786 | return __perf_evsel__open(evsel, &empty_cpu_map.map, threads); |
48290609 | 787 | } |
70082dd9 | 788 | |
0807d2d8 ACM |
789 | static int perf_evsel__parse_id_sample(const struct perf_evsel *evsel, |
790 | const union perf_event *event, | |
791 | struct perf_sample *sample) | |
d0dd74e8 | 792 | { |
0807d2d8 | 793 | u64 type = evsel->attr.sample_type; |
d0dd74e8 | 794 | const u64 *array = event->sample.array; |
0807d2d8 | 795 | bool swapped = evsel->needs_swap; |
37073f9e | 796 | union u64_swap u; |
d0dd74e8 ACM |
797 | |
798 | array += ((event->header.size - | |
799 | sizeof(event->header)) / sizeof(u64)) - 1; | |
800 | ||
801 | if (type & PERF_SAMPLE_CPU) { | |
37073f9e JO |
802 | u.val64 = *array; |
803 | if (swapped) { | |
804 | /* undo swap of u64, then swap on individual u32s */ | |
805 | u.val64 = bswap_64(u.val64); | |
806 | u.val32[0] = bswap_32(u.val32[0]); | |
807 | } | |
808 | ||
809 | sample->cpu = u.val32[0]; | |
d0dd74e8 ACM |
810 | array--; |
811 | } | |
812 | ||
813 | if (type & PERF_SAMPLE_STREAM_ID) { | |
814 | sample->stream_id = *array; | |
815 | array--; | |
816 | } | |
817 | ||
818 | if (type & PERF_SAMPLE_ID) { | |
819 | sample->id = *array; | |
820 | array--; | |
821 | } | |
822 | ||
823 | if (type & PERF_SAMPLE_TIME) { | |
824 | sample->time = *array; | |
825 | array--; | |
826 | } | |
827 | ||
828 | if (type & PERF_SAMPLE_TID) { | |
37073f9e JO |
829 | u.val64 = *array; |
830 | if (swapped) { | |
831 | /* undo swap of u64, then swap on individual u32s */ | |
832 | u.val64 = bswap_64(u.val64); | |
833 | u.val32[0] = bswap_32(u.val32[0]); | |
834 | u.val32[1] = bswap_32(u.val32[1]); | |
835 | } | |
836 | ||
837 | sample->pid = u.val32[0]; | |
838 | sample->tid = u.val32[1]; | |
d0dd74e8 ACM |
839 | } |
840 | ||
841 | return 0; | |
842 | } | |
843 | ||
98e1da90 FW |
844 | static bool sample_overlap(const union perf_event *event, |
845 | const void *offset, u64 size) | |
846 | { | |
847 | const void *base = event; | |
848 | ||
849 | if (offset + size > base + event->header.size) | |
850 | return true; | |
851 | ||
852 | return false; | |
853 | } | |
854 | ||
a3f698fe | 855 | int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, |
0807d2d8 | 856 | struct perf_sample *data) |
d0dd74e8 | 857 | { |
a3f698fe | 858 | u64 type = evsel->attr.sample_type; |
0f6a3015 | 859 | u64 regs_user = evsel->attr.sample_regs_user; |
0807d2d8 | 860 | bool swapped = evsel->needs_swap; |
d0dd74e8 ACM |
861 | const u64 *array; |
862 | ||
936be503 DA |
863 | /* |
864 | * used for cross-endian analysis. See git commit 65014ab3 | |
865 | * for why this goofiness is needed. | |
866 | */ | |
6a11f92e | 867 | union u64_swap u; |
936be503 | 868 | |
f3bda2c9 | 869 | memset(data, 0, sizeof(*data)); |
d0dd74e8 ACM |
870 | data->cpu = data->pid = data->tid = -1; |
871 | data->stream_id = data->id = data->time = -1ULL; | |
a4a03fc7 | 872 | data->period = 1; |
d0dd74e8 ACM |
873 | |
874 | if (event->header.type != PERF_RECORD_SAMPLE) { | |
a3f698fe | 875 | if (!evsel->attr.sample_id_all) |
d0dd74e8 | 876 | return 0; |
0807d2d8 | 877 | return perf_evsel__parse_id_sample(evsel, event, data); |
d0dd74e8 ACM |
878 | } |
879 | ||
880 | array = event->sample.array; | |
881 | ||
a3f698fe | 882 | if (evsel->sample_size + sizeof(event->header) > event->header.size) |
a2854124 FW |
883 | return -EFAULT; |
884 | ||
d0dd74e8 ACM |
885 | if (type & PERF_SAMPLE_IP) { |
886 | data->ip = event->ip.ip; | |
887 | array++; | |
888 | } | |
889 | ||
890 | if (type & PERF_SAMPLE_TID) { | |
936be503 DA |
891 | u.val64 = *array; |
892 | if (swapped) { | |
893 | /* undo swap of u64, then swap on individual u32s */ | |
894 | u.val64 = bswap_64(u.val64); | |
895 | u.val32[0] = bswap_32(u.val32[0]); | |
896 | u.val32[1] = bswap_32(u.val32[1]); | |
897 | } | |
898 | ||
899 | data->pid = u.val32[0]; | |
900 | data->tid = u.val32[1]; | |
d0dd74e8 ACM |
901 | array++; |
902 | } | |
903 | ||
904 | if (type & PERF_SAMPLE_TIME) { | |
905 | data->time = *array; | |
906 | array++; | |
907 | } | |
908 | ||
7cec0922 | 909 | data->addr = 0; |
d0dd74e8 ACM |
910 | if (type & PERF_SAMPLE_ADDR) { |
911 | data->addr = *array; | |
912 | array++; | |
913 | } | |
914 | ||
915 | data->id = -1ULL; | |
916 | if (type & PERF_SAMPLE_ID) { | |
917 | data->id = *array; | |
918 | array++; | |
919 | } | |
920 | ||
921 | if (type & PERF_SAMPLE_STREAM_ID) { | |
922 | data->stream_id = *array; | |
923 | array++; | |
924 | } | |
925 | ||
926 | if (type & PERF_SAMPLE_CPU) { | |
936be503 DA |
927 | |
928 | u.val64 = *array; | |
929 | if (swapped) { | |
930 | /* undo swap of u64, then swap on individual u32s */ | |
931 | u.val64 = bswap_64(u.val64); | |
932 | u.val32[0] = bswap_32(u.val32[0]); | |
933 | } | |
934 | ||
935 | data->cpu = u.val32[0]; | |
d0dd74e8 ACM |
936 | array++; |
937 | } | |
938 | ||
939 | if (type & PERF_SAMPLE_PERIOD) { | |
940 | data->period = *array; | |
941 | array++; | |
942 | } | |
943 | ||
944 | if (type & PERF_SAMPLE_READ) { | |
f9d36996 | 945 | fprintf(stderr, "PERF_SAMPLE_READ is unsupported for now\n"); |
d0dd74e8 ACM |
946 | return -1; |
947 | } | |
948 | ||
949 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
98e1da90 FW |
950 | if (sample_overlap(event, array, sizeof(data->callchain->nr))) |
951 | return -EFAULT; | |
952 | ||
d0dd74e8 | 953 | data->callchain = (struct ip_callchain *)array; |
98e1da90 FW |
954 | |
955 | if (sample_overlap(event, array, data->callchain->nr)) | |
956 | return -EFAULT; | |
957 | ||
d0dd74e8 ACM |
958 | array += 1 + data->callchain->nr; |
959 | } | |
960 | ||
961 | if (type & PERF_SAMPLE_RAW) { | |
8e303f20 JO |
962 | const u64 *pdata; |
963 | ||
936be503 DA |
964 | u.val64 = *array; |
965 | if (WARN_ONCE(swapped, | |
966 | "Endianness of raw data not corrected!\n")) { | |
967 | /* undo swap of u64, then swap on individual u32s */ | |
968 | u.val64 = bswap_64(u.val64); | |
969 | u.val32[0] = bswap_32(u.val32[0]); | |
970 | u.val32[1] = bswap_32(u.val32[1]); | |
971 | } | |
98e1da90 FW |
972 | |
973 | if (sample_overlap(event, array, sizeof(u32))) | |
974 | return -EFAULT; | |
975 | ||
936be503 | 976 | data->raw_size = u.val32[0]; |
8e303f20 | 977 | pdata = (void *) array + sizeof(u32); |
98e1da90 | 978 | |
8e303f20 | 979 | if (sample_overlap(event, pdata, data->raw_size)) |
98e1da90 FW |
980 | return -EFAULT; |
981 | ||
8e303f20 | 982 | data->raw_data = (void *) pdata; |
fa30c964 SE |
983 | |
984 | array = (void *)array + data->raw_size + sizeof(u32); | |
d0dd74e8 ACM |
985 | } |
986 | ||
b5387528 RAV |
987 | if (type & PERF_SAMPLE_BRANCH_STACK) { |
988 | u64 sz; | |
989 | ||
990 | data->branch_stack = (struct branch_stack *)array; | |
991 | array++; /* nr */ | |
992 | ||
993 | sz = data->branch_stack->nr * sizeof(struct branch_entry); | |
994 | sz /= sizeof(u64); | |
995 | array += sz; | |
996 | } | |
0f6a3015 JO |
997 | |
998 | if (type & PERF_SAMPLE_REGS_USER) { | |
999 | /* First u64 tells us if we have any regs in sample. */ | |
1000 | u64 avail = *array++; | |
1001 | ||
1002 | if (avail) { | |
1003 | data->user_regs.regs = (u64 *)array; | |
1004 | array += hweight_long(regs_user); | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | if (type & PERF_SAMPLE_STACK_USER) { | |
1009 | u64 size = *array++; | |
1010 | ||
1011 | data->user_stack.offset = ((char *)(array - 1) | |
1012 | - (char *) event); | |
1013 | ||
1014 | if (!size) { | |
1015 | data->user_stack.size = 0; | |
1016 | } else { | |
1017 | data->user_stack.data = (char *)array; | |
1018 | array += size / sizeof(*array); | |
1019 | data->user_stack.size = *array; | |
1020 | } | |
1021 | } | |
1022 | ||
d0dd74e8 ACM |
1023 | return 0; |
1024 | } | |
74eec26f AV |
1025 | |
1026 | int perf_event__synthesize_sample(union perf_event *event, u64 type, | |
1027 | const struct perf_sample *sample, | |
1028 | bool swapped) | |
1029 | { | |
1030 | u64 *array; | |
1031 | ||
1032 | /* | |
1033 | * used for cross-endian analysis. See git commit 65014ab3 | |
1034 | * for why this goofiness is needed. | |
1035 | */ | |
6a11f92e | 1036 | union u64_swap u; |
74eec26f AV |
1037 | |
1038 | array = event->sample.array; | |
1039 | ||
1040 | if (type & PERF_SAMPLE_IP) { | |
1041 | event->ip.ip = sample->ip; | |
1042 | array++; | |
1043 | } | |
1044 | ||
1045 | if (type & PERF_SAMPLE_TID) { | |
1046 | u.val32[0] = sample->pid; | |
1047 | u.val32[1] = sample->tid; | |
1048 | if (swapped) { | |
1049 | /* | |
a3f698fe | 1050 | * Inverse of what is done in perf_evsel__parse_sample |
74eec26f AV |
1051 | */ |
1052 | u.val32[0] = bswap_32(u.val32[0]); | |
1053 | u.val32[1] = bswap_32(u.val32[1]); | |
1054 | u.val64 = bswap_64(u.val64); | |
1055 | } | |
1056 | ||
1057 | *array = u.val64; | |
1058 | array++; | |
1059 | } | |
1060 | ||
1061 | if (type & PERF_SAMPLE_TIME) { | |
1062 | *array = sample->time; | |
1063 | array++; | |
1064 | } | |
1065 | ||
1066 | if (type & PERF_SAMPLE_ADDR) { | |
1067 | *array = sample->addr; | |
1068 | array++; | |
1069 | } | |
1070 | ||
1071 | if (type & PERF_SAMPLE_ID) { | |
1072 | *array = sample->id; | |
1073 | array++; | |
1074 | } | |
1075 | ||
1076 | if (type & PERF_SAMPLE_STREAM_ID) { | |
1077 | *array = sample->stream_id; | |
1078 | array++; | |
1079 | } | |
1080 | ||
1081 | if (type & PERF_SAMPLE_CPU) { | |
1082 | u.val32[0] = sample->cpu; | |
1083 | if (swapped) { | |
1084 | /* | |
a3f698fe | 1085 | * Inverse of what is done in perf_evsel__parse_sample |
74eec26f AV |
1086 | */ |
1087 | u.val32[0] = bswap_32(u.val32[0]); | |
1088 | u.val64 = bswap_64(u.val64); | |
1089 | } | |
1090 | *array = u.val64; | |
1091 | array++; | |
1092 | } | |
1093 | ||
1094 | if (type & PERF_SAMPLE_PERIOD) { | |
1095 | *array = sample->period; | |
1096 | array++; | |
1097 | } | |
1098 | ||
1099 | return 0; | |
1100 | } | |
5555ded4 | 1101 | |
efd2b924 ACM |
1102 | struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name) |
1103 | { | |
1104 | return pevent_find_field(evsel->tp_format, name); | |
1105 | } | |
1106 | ||
5d2074ea | 1107 | void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample, |
5555ded4 ACM |
1108 | const char *name) |
1109 | { | |
efd2b924 | 1110 | struct format_field *field = perf_evsel__field(evsel, name); |
5555ded4 ACM |
1111 | int offset; |
1112 | ||
efd2b924 ACM |
1113 | if (!field) |
1114 | return NULL; | |
5555ded4 ACM |
1115 | |
1116 | offset = field->offset; | |
1117 | ||
1118 | if (field->flags & FIELD_IS_DYNAMIC) { | |
1119 | offset = *(int *)(sample->raw_data + field->offset); | |
1120 | offset &= 0xffff; | |
1121 | } | |
1122 | ||
1123 | return sample->raw_data + offset; | |
1124 | } | |
1125 | ||
1126 | u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, | |
1127 | const char *name) | |
1128 | { | |
efd2b924 | 1129 | struct format_field *field = perf_evsel__field(evsel, name); |
e6b6f679 ACM |
1130 | void *ptr; |
1131 | u64 value; | |
5555ded4 | 1132 | |
efd2b924 ACM |
1133 | if (!field) |
1134 | return 0; | |
5555ded4 | 1135 | |
e6b6f679 | 1136 | ptr = sample->raw_data + field->offset; |
5555ded4 | 1137 | |
e6b6f679 ACM |
1138 | switch (field->size) { |
1139 | case 1: | |
1140 | return *(u8 *)ptr; | |
1141 | case 2: | |
1142 | value = *(u16 *)ptr; | |
1143 | break; | |
1144 | case 4: | |
1145 | value = *(u32 *)ptr; | |
1146 | break; | |
1147 | case 8: | |
1148 | value = *(u64 *)ptr; | |
1149 | break; | |
1150 | default: | |
1151 | return 0; | |
1152 | } | |
1153 | ||
1154 | if (!evsel->needs_swap) | |
1155 | return value; | |
1156 | ||
1157 | switch (field->size) { | |
1158 | case 2: | |
1159 | return bswap_16(value); | |
1160 | case 4: | |
1161 | return bswap_32(value); | |
1162 | case 8: | |
1163 | return bswap_64(value); | |
1164 | default: | |
1165 | return 0; | |
1166 | } | |
1167 | ||
1168 | return 0; | |
5555ded4 | 1169 | } |