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> |
a43783ae | 11 | #include <errno.h> |
fd20e811 | 12 | #include <inttypes.h> |
0f6a3015 | 13 | #include <linux/bitops.h> |
2157f6ee | 14 | #include <api/fs/fs.h> |
4605eab3 | 15 | #include <api/fs/tracing_path.h> |
4e319027 RR |
16 | #include <traceevent/event-parse.h> |
17 | #include <linux/hw_breakpoint.h> | |
18 | #include <linux/perf_event.h> | |
0353631a | 19 | #include <linux/compiler.h> |
8dd2a131 | 20 | #include <linux/err.h> |
86a5e0c2 | 21 | #include <sys/ioctl.h> |
bec19672 | 22 | #include <sys/resource.h> |
2157f6ee ACM |
23 | #include <sys/types.h> |
24 | #include <dirent.h> | |
4e319027 | 25 | #include "asm/bug.h" |
8f651eae | 26 | #include "callchain.h" |
f14d5707 | 27 | #include "cgroup.h" |
5ab8c689 | 28 | #include "event.h" |
69aad6f1 | 29 | #include "evsel.h" |
70082dd9 | 30 | #include "evlist.h" |
69aad6f1 | 31 | #include "util.h" |
86bd5e86 | 32 | #include "cpumap.h" |
fd78260b | 33 | #include "thread_map.h" |
12864b31 | 34 | #include "target.h" |
26d33022 | 35 | #include "perf_regs.h" |
e3e1a54f | 36 | #include "debug.h" |
97978b3e | 37 | #include "trace-event.h" |
a9a3a4d9 | 38 | #include "stat.h" |
f9d8adb3 | 39 | #include "memswap.h" |
ac12f676 | 40 | #include "util/parse-branch-options.h" |
69aad6f1 | 41 | |
3d689ed6 ACM |
42 | #include "sane_ctype.h" |
43 | ||
9a831b3a | 44 | struct perf_missing_features perf_missing_features; |
594ac61a | 45 | |
814c8c38 PZ |
46 | static clockid_t clockid; |
47 | ||
ce8ccff5 ACM |
48 | static int perf_evsel__no_extra_init(struct perf_evsel *evsel __maybe_unused) |
49 | { | |
50 | return 0; | |
51 | } | |
52 | ||
10213e2f JO |
53 | void __weak test_attr__ready(void) { } |
54 | ||
ce8ccff5 ACM |
55 | static void perf_evsel__no_extra_fini(struct perf_evsel *evsel __maybe_unused) |
56 | { | |
57 | } | |
58 | ||
59 | static struct { | |
60 | size_t size; | |
61 | int (*init)(struct perf_evsel *evsel); | |
62 | void (*fini)(struct perf_evsel *evsel); | |
63 | } perf_evsel__object = { | |
64 | .size = sizeof(struct perf_evsel), | |
65 | .init = perf_evsel__no_extra_init, | |
66 | .fini = perf_evsel__no_extra_fini, | |
67 | }; | |
68 | ||
69 | int perf_evsel__object_config(size_t object_size, | |
70 | int (*init)(struct perf_evsel *evsel), | |
71 | void (*fini)(struct perf_evsel *evsel)) | |
72 | { | |
73 | ||
74 | if (object_size == 0) | |
75 | goto set_methods; | |
76 | ||
77 | if (perf_evsel__object.size > object_size) | |
78 | return -EINVAL; | |
79 | ||
80 | perf_evsel__object.size = object_size; | |
81 | ||
82 | set_methods: | |
83 | if (init != NULL) | |
84 | perf_evsel__object.init = init; | |
85 | ||
86 | if (fini != NULL) | |
87 | perf_evsel__object.fini = fini; | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
c52b12ed ACM |
92 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
93 | ||
75562573 | 94 | int __perf_evsel__sample_size(u64 sample_type) |
c2a70653 ACM |
95 | { |
96 | u64 mask = sample_type & PERF_SAMPLE_MASK; | |
97 | int size = 0; | |
98 | int i; | |
99 | ||
100 | for (i = 0; i < 64; i++) { | |
101 | if (mask & (1ULL << i)) | |
102 | size++; | |
103 | } | |
104 | ||
105 | size *= sizeof(u64); | |
106 | ||
107 | return size; | |
108 | } | |
109 | ||
75562573 AH |
110 | /** |
111 | * __perf_evsel__calc_id_pos - calculate id_pos. | |
112 | * @sample_type: sample type | |
113 | * | |
114 | * This function returns the position of the event id (PERF_SAMPLE_ID or | |
115 | * PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of struct | |
116 | * sample_event. | |
117 | */ | |
118 | static int __perf_evsel__calc_id_pos(u64 sample_type) | |
119 | { | |
120 | int idx = 0; | |
121 | ||
122 | if (sample_type & PERF_SAMPLE_IDENTIFIER) | |
123 | return 0; | |
124 | ||
125 | if (!(sample_type & PERF_SAMPLE_ID)) | |
126 | return -1; | |
127 | ||
128 | if (sample_type & PERF_SAMPLE_IP) | |
129 | idx += 1; | |
130 | ||
131 | if (sample_type & PERF_SAMPLE_TID) | |
132 | idx += 1; | |
133 | ||
134 | if (sample_type & PERF_SAMPLE_TIME) | |
135 | idx += 1; | |
136 | ||
137 | if (sample_type & PERF_SAMPLE_ADDR) | |
138 | idx += 1; | |
139 | ||
140 | return idx; | |
141 | } | |
142 | ||
143 | /** | |
144 | * __perf_evsel__calc_is_pos - calculate is_pos. | |
145 | * @sample_type: sample type | |
146 | * | |
147 | * This function returns the position (counting backwards) of the event id | |
148 | * (PERF_SAMPLE_ID or PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if | |
149 | * sample_id_all is used there is an id sample appended to non-sample events. | |
150 | */ | |
151 | static int __perf_evsel__calc_is_pos(u64 sample_type) | |
152 | { | |
153 | int idx = 1; | |
154 | ||
155 | if (sample_type & PERF_SAMPLE_IDENTIFIER) | |
156 | return 1; | |
157 | ||
158 | if (!(sample_type & PERF_SAMPLE_ID)) | |
159 | return -1; | |
160 | ||
161 | if (sample_type & PERF_SAMPLE_CPU) | |
162 | idx += 1; | |
163 | ||
164 | if (sample_type & PERF_SAMPLE_STREAM_ID) | |
165 | idx += 1; | |
166 | ||
167 | return idx; | |
168 | } | |
169 | ||
170 | void perf_evsel__calc_id_pos(struct perf_evsel *evsel) | |
171 | { | |
172 | evsel->id_pos = __perf_evsel__calc_id_pos(evsel->attr.sample_type); | |
173 | evsel->is_pos = __perf_evsel__calc_is_pos(evsel->attr.sample_type); | |
174 | } | |
175 | ||
7be5ebe8 ACM |
176 | void __perf_evsel__set_sample_bit(struct perf_evsel *evsel, |
177 | enum perf_event_sample_format bit) | |
178 | { | |
179 | if (!(evsel->attr.sample_type & bit)) { | |
180 | evsel->attr.sample_type |= bit; | |
181 | evsel->sample_size += sizeof(u64); | |
75562573 | 182 | perf_evsel__calc_id_pos(evsel); |
7be5ebe8 ACM |
183 | } |
184 | } | |
185 | ||
186 | void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel, | |
187 | enum perf_event_sample_format bit) | |
188 | { | |
189 | if (evsel->attr.sample_type & bit) { | |
190 | evsel->attr.sample_type &= ~bit; | |
191 | evsel->sample_size -= sizeof(u64); | |
75562573 | 192 | perf_evsel__calc_id_pos(evsel); |
7be5ebe8 ACM |
193 | } |
194 | } | |
195 | ||
75562573 AH |
196 | void perf_evsel__set_sample_id(struct perf_evsel *evsel, |
197 | bool can_sample_identifier) | |
7a5a5ca5 | 198 | { |
75562573 AH |
199 | if (can_sample_identifier) { |
200 | perf_evsel__reset_sample_bit(evsel, ID); | |
201 | perf_evsel__set_sample_bit(evsel, IDENTIFIER); | |
202 | } else { | |
203 | perf_evsel__set_sample_bit(evsel, ID); | |
204 | } | |
7a5a5ca5 ACM |
205 | evsel->attr.read_format |= PERF_FORMAT_ID; |
206 | } | |
207 | ||
5496bc0c ACM |
208 | /** |
209 | * perf_evsel__is_function_event - Return whether given evsel is a function | |
210 | * trace event | |
211 | * | |
212 | * @evsel - evsel selector to be tested | |
213 | * | |
214 | * Return %true if event is function trace event | |
215 | */ | |
216 | bool perf_evsel__is_function_event(struct perf_evsel *evsel) | |
217 | { | |
218 | #define FUNCTION_EVENT "ftrace:function" | |
219 | ||
220 | return evsel->name && | |
221 | !strncmp(FUNCTION_EVENT, evsel->name, sizeof(FUNCTION_EVENT)); | |
222 | ||
223 | #undef FUNCTION_EVENT | |
224 | } | |
225 | ||
ef1d1af2 ACM |
226 | void perf_evsel__init(struct perf_evsel *evsel, |
227 | struct perf_event_attr *attr, int idx) | |
228 | { | |
229 | evsel->idx = idx; | |
60b0896c | 230 | evsel->tracking = !idx; |
ef1d1af2 | 231 | evsel->attr = *attr; |
2cfda562 | 232 | evsel->leader = evsel; |
410136f5 SE |
233 | evsel->unit = ""; |
234 | evsel->scale = 1.0; | |
d49e4695 | 235 | evsel->evlist = NULL; |
1f45b1d4 | 236 | evsel->bpf_fd = -1; |
ef1d1af2 | 237 | INIT_LIST_HEAD(&evsel->node); |
930a2e29 | 238 | INIT_LIST_HEAD(&evsel->config_terms); |
ce8ccff5 | 239 | perf_evsel__object.init(evsel); |
bde09467 | 240 | evsel->sample_size = __perf_evsel__sample_size(attr->sample_type); |
75562573 | 241 | perf_evsel__calc_id_pos(evsel); |
15bfd2cc | 242 | evsel->cmdline_group_boundary = false; |
37932c18 | 243 | evsel->metric_expr = NULL; |
96284814 | 244 | evsel->metric_name = NULL; |
37932c18 AK |
245 | evsel->metric_events = NULL; |
246 | evsel->collect_stat = false; | |
8c5421c0 | 247 | evsel->pmu_name = NULL; |
ef1d1af2 ACM |
248 | } |
249 | ||
ef503831 | 250 | struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx) |
69aad6f1 | 251 | { |
ce8ccff5 | 252 | struct perf_evsel *evsel = zalloc(perf_evsel__object.size); |
69aad6f1 | 253 | |
ef1d1af2 ACM |
254 | if (evsel != NULL) |
255 | perf_evsel__init(evsel, attr, idx); | |
69aad6f1 | 256 | |
03e0a7df | 257 | if (perf_evsel__is_bpf_output(evsel)) { |
d37ba880 WN |
258 | evsel->attr.sample_type |= (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | |
259 | PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), | |
03e0a7df WN |
260 | evsel->attr.sample_period = 1; |
261 | } | |
262 | ||
69aad6f1 ACM |
263 | return evsel; |
264 | } | |
265 | ||
f1e52f14 ACM |
266 | static bool perf_event_can_profile_kernel(void) |
267 | { | |
268 | return geteuid() == 0 || perf_event_paranoid() == -1; | |
269 | } | |
270 | ||
30269dc1 | 271 | struct perf_evsel *perf_evsel__new_cycles(bool precise) |
7c48dcfd ACM |
272 | { |
273 | struct perf_event_attr attr = { | |
274 | .type = PERF_TYPE_HARDWARE, | |
275 | .config = PERF_COUNT_HW_CPU_CYCLES, | |
f1e52f14 | 276 | .exclude_kernel = !perf_event_can_profile_kernel(), |
7c48dcfd ACM |
277 | }; |
278 | struct perf_evsel *evsel; | |
279 | ||
280 | event_attr_init(&attr); | |
30269dc1 ACM |
281 | |
282 | if (!precise) | |
283 | goto new_event; | |
7a1ac110 ACM |
284 | /* |
285 | * Unnamed union member, not supported as struct member named | |
286 | * initializer in older compilers such as gcc 4.4.7 | |
287 | * | |
288 | * Just for probing the precise_ip: | |
289 | */ | |
290 | attr.sample_period = 1; | |
7c48dcfd ACM |
291 | |
292 | perf_event_attr__set_max_precise_ip(&attr); | |
7a1ac110 ACM |
293 | /* |
294 | * Now let the usual logic to set up the perf_event_attr defaults | |
295 | * to kick in when we return and before perf_evsel__open() is called. | |
296 | */ | |
297 | attr.sample_period = 0; | |
30269dc1 | 298 | new_event: |
7c48dcfd ACM |
299 | evsel = perf_evsel__new(&attr); |
300 | if (evsel == NULL) | |
301 | goto out; | |
302 | ||
303 | /* use asprintf() because free(evsel) assumes name is allocated */ | |
ede5626d ACM |
304 | if (asprintf(&evsel->name, "cycles%s%s%.*s", |
305 | (attr.precise_ip || attr.exclude_kernel) ? ":" : "", | |
306 | attr.exclude_kernel ? "u" : "", | |
307 | attr.precise_ip ? attr.precise_ip + 1 : 0, "ppp") < 0) | |
7c48dcfd ACM |
308 | goto error_free; |
309 | out: | |
310 | return evsel; | |
311 | error_free: | |
312 | perf_evsel__delete(evsel); | |
313 | evsel = NULL; | |
314 | goto out; | |
315 | } | |
316 | ||
8dd2a131 JO |
317 | /* |
318 | * Returns pointer with encoded error via <linux/err.h> interface. | |
319 | */ | |
ef503831 | 320 | struct perf_evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx) |
efd2b924 | 321 | { |
ce8ccff5 | 322 | struct perf_evsel *evsel = zalloc(perf_evsel__object.size); |
8dd2a131 | 323 | int err = -ENOMEM; |
efd2b924 | 324 | |
8dd2a131 JO |
325 | if (evsel == NULL) { |
326 | goto out_err; | |
327 | } else { | |
efd2b924 | 328 | struct perf_event_attr attr = { |
0b80f8b3 ACM |
329 | .type = PERF_TYPE_TRACEPOINT, |
330 | .sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | | |
331 | PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), | |
efd2b924 ACM |
332 | }; |
333 | ||
e48ffe2b ACM |
334 | if (asprintf(&evsel->name, "%s:%s", sys, name) < 0) |
335 | goto out_free; | |
336 | ||
97978b3e | 337 | evsel->tp_format = trace_event__tp_format(sys, name); |
8dd2a131 JO |
338 | if (IS_ERR(evsel->tp_format)) { |
339 | err = PTR_ERR(evsel->tp_format); | |
efd2b924 | 340 | goto out_free; |
8dd2a131 | 341 | } |
efd2b924 | 342 | |
0b80f8b3 | 343 | event_attr_init(&attr); |
efd2b924 | 344 | attr.config = evsel->tp_format->id; |
0b80f8b3 | 345 | attr.sample_period = 1; |
efd2b924 | 346 | perf_evsel__init(evsel, &attr, idx); |
efd2b924 ACM |
347 | } |
348 | ||
349 | return evsel; | |
350 | ||
351 | out_free: | |
74cf249d | 352 | zfree(&evsel->name); |
efd2b924 | 353 | free(evsel); |
8dd2a131 JO |
354 | out_err: |
355 | return ERR_PTR(err); | |
efd2b924 ACM |
356 | } |
357 | ||
8ad7013b | 358 | const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = { |
c410431c ACM |
359 | "cycles", |
360 | "instructions", | |
361 | "cache-references", | |
362 | "cache-misses", | |
363 | "branches", | |
364 | "branch-misses", | |
365 | "bus-cycles", | |
366 | "stalled-cycles-frontend", | |
367 | "stalled-cycles-backend", | |
368 | "ref-cycles", | |
369 | }; | |
370 | ||
dd4f5223 | 371 | static const char *__perf_evsel__hw_name(u64 config) |
c410431c ACM |
372 | { |
373 | if (config < PERF_COUNT_HW_MAX && perf_evsel__hw_names[config]) | |
374 | return perf_evsel__hw_names[config]; | |
375 | ||
376 | return "unknown-hardware"; | |
377 | } | |
378 | ||
27f18617 | 379 | static int perf_evsel__add_modifiers(struct perf_evsel *evsel, char *bf, size_t size) |
c410431c | 380 | { |
27f18617 | 381 | int colon = 0, r = 0; |
c410431c | 382 | struct perf_event_attr *attr = &evsel->attr; |
c410431c ACM |
383 | bool exclude_guest_default = false; |
384 | ||
385 | #define MOD_PRINT(context, mod) do { \ | |
386 | if (!attr->exclude_##context) { \ | |
27f18617 | 387 | if (!colon) colon = ++r; \ |
c410431c ACM |
388 | r += scnprintf(bf + r, size - r, "%c", mod); \ |
389 | } } while(0) | |
390 | ||
391 | if (attr->exclude_kernel || attr->exclude_user || attr->exclude_hv) { | |
392 | MOD_PRINT(kernel, 'k'); | |
393 | MOD_PRINT(user, 'u'); | |
394 | MOD_PRINT(hv, 'h'); | |
395 | exclude_guest_default = true; | |
396 | } | |
397 | ||
398 | if (attr->precise_ip) { | |
399 | if (!colon) | |
27f18617 | 400 | colon = ++r; |
c410431c ACM |
401 | r += scnprintf(bf + r, size - r, "%.*s", attr->precise_ip, "ppp"); |
402 | exclude_guest_default = true; | |
403 | } | |
404 | ||
405 | if (attr->exclude_host || attr->exclude_guest == exclude_guest_default) { | |
406 | MOD_PRINT(host, 'H'); | |
407 | MOD_PRINT(guest, 'G'); | |
408 | } | |
409 | #undef MOD_PRINT | |
410 | if (colon) | |
27f18617 | 411 | bf[colon - 1] = ':'; |
c410431c ACM |
412 | return r; |
413 | } | |
414 | ||
27f18617 ACM |
415 | static int perf_evsel__hw_name(struct perf_evsel *evsel, char *bf, size_t size) |
416 | { | |
417 | int r = scnprintf(bf, size, "%s", __perf_evsel__hw_name(evsel->attr.config)); | |
418 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
419 | } | |
420 | ||
8ad7013b | 421 | const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = { |
335c2f5d ACM |
422 | "cpu-clock", |
423 | "task-clock", | |
424 | "page-faults", | |
425 | "context-switches", | |
8ad7013b | 426 | "cpu-migrations", |
335c2f5d ACM |
427 | "minor-faults", |
428 | "major-faults", | |
429 | "alignment-faults", | |
430 | "emulation-faults", | |
d22d1a2a | 431 | "dummy", |
335c2f5d ACM |
432 | }; |
433 | ||
dd4f5223 | 434 | static const char *__perf_evsel__sw_name(u64 config) |
335c2f5d ACM |
435 | { |
436 | if (config < PERF_COUNT_SW_MAX && perf_evsel__sw_names[config]) | |
437 | return perf_evsel__sw_names[config]; | |
438 | return "unknown-software"; | |
439 | } | |
440 | ||
441 | static int perf_evsel__sw_name(struct perf_evsel *evsel, char *bf, size_t size) | |
442 | { | |
443 | int r = scnprintf(bf, size, "%s", __perf_evsel__sw_name(evsel->attr.config)); | |
444 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
445 | } | |
446 | ||
287e74aa JO |
447 | static int __perf_evsel__bp_name(char *bf, size_t size, u64 addr, u64 type) |
448 | { | |
449 | int r; | |
450 | ||
451 | r = scnprintf(bf, size, "mem:0x%" PRIx64 ":", addr); | |
452 | ||
453 | if (type & HW_BREAKPOINT_R) | |
454 | r += scnprintf(bf + r, size - r, "r"); | |
455 | ||
456 | if (type & HW_BREAKPOINT_W) | |
457 | r += scnprintf(bf + r, size - r, "w"); | |
458 | ||
459 | if (type & HW_BREAKPOINT_X) | |
460 | r += scnprintf(bf + r, size - r, "x"); | |
461 | ||
462 | return r; | |
463 | } | |
464 | ||
465 | static int perf_evsel__bp_name(struct perf_evsel *evsel, char *bf, size_t size) | |
466 | { | |
467 | struct perf_event_attr *attr = &evsel->attr; | |
468 | int r = __perf_evsel__bp_name(bf, size, attr->bp_addr, attr->bp_type); | |
469 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
470 | } | |
471 | ||
0b668bc9 ACM |
472 | const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] |
473 | [PERF_EVSEL__MAX_ALIASES] = { | |
474 | { "L1-dcache", "l1-d", "l1d", "L1-data", }, | |
475 | { "L1-icache", "l1-i", "l1i", "L1-instruction", }, | |
476 | { "LLC", "L2", }, | |
477 | { "dTLB", "d-tlb", "Data-TLB", }, | |
478 | { "iTLB", "i-tlb", "Instruction-TLB", }, | |
479 | { "branch", "branches", "bpu", "btb", "bpc", }, | |
480 | { "node", }, | |
481 | }; | |
482 | ||
483 | const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] | |
484 | [PERF_EVSEL__MAX_ALIASES] = { | |
485 | { "load", "loads", "read", }, | |
486 | { "store", "stores", "write", }, | |
487 | { "prefetch", "prefetches", "speculative-read", "speculative-load", }, | |
488 | }; | |
489 | ||
490 | const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] | |
491 | [PERF_EVSEL__MAX_ALIASES] = { | |
492 | { "refs", "Reference", "ops", "access", }, | |
493 | { "misses", "miss", }, | |
494 | }; | |
495 | ||
496 | #define C(x) PERF_COUNT_HW_CACHE_##x | |
497 | #define CACHE_READ (1 << C(OP_READ)) | |
498 | #define CACHE_WRITE (1 << C(OP_WRITE)) | |
499 | #define CACHE_PREFETCH (1 << C(OP_PREFETCH)) | |
500 | #define COP(x) (1 << x) | |
501 | ||
502 | /* | |
503 | * cache operartion stat | |
504 | * L1I : Read and prefetch only | |
505 | * ITLB and BPU : Read-only | |
506 | */ | |
507 | static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = { | |
508 | [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
509 | [C(L1I)] = (CACHE_READ | CACHE_PREFETCH), | |
510 | [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
511 | [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
512 | [C(ITLB)] = (CACHE_READ), | |
513 | [C(BPU)] = (CACHE_READ), | |
514 | [C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
515 | }; | |
516 | ||
517 | bool perf_evsel__is_cache_op_valid(u8 type, u8 op) | |
518 | { | |
519 | if (perf_evsel__hw_cache_stat[type] & COP(op)) | |
520 | return true; /* valid */ | |
521 | else | |
522 | return false; /* invalid */ | |
523 | } | |
524 | ||
525 | int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, | |
526 | char *bf, size_t size) | |
527 | { | |
528 | if (result) { | |
529 | return scnprintf(bf, size, "%s-%s-%s", perf_evsel__hw_cache[type][0], | |
530 | perf_evsel__hw_cache_op[op][0], | |
531 | perf_evsel__hw_cache_result[result][0]); | |
532 | } | |
533 | ||
534 | return scnprintf(bf, size, "%s-%s", perf_evsel__hw_cache[type][0], | |
535 | perf_evsel__hw_cache_op[op][1]); | |
536 | } | |
537 | ||
dd4f5223 | 538 | static int __perf_evsel__hw_cache_name(u64 config, char *bf, size_t size) |
0b668bc9 ACM |
539 | { |
540 | u8 op, result, type = (config >> 0) & 0xff; | |
541 | const char *err = "unknown-ext-hardware-cache-type"; | |
542 | ||
c53412ee | 543 | if (type >= PERF_COUNT_HW_CACHE_MAX) |
0b668bc9 ACM |
544 | goto out_err; |
545 | ||
546 | op = (config >> 8) & 0xff; | |
547 | err = "unknown-ext-hardware-cache-op"; | |
c53412ee | 548 | if (op >= PERF_COUNT_HW_CACHE_OP_MAX) |
0b668bc9 ACM |
549 | goto out_err; |
550 | ||
551 | result = (config >> 16) & 0xff; | |
552 | err = "unknown-ext-hardware-cache-result"; | |
c53412ee | 553 | if (result >= PERF_COUNT_HW_CACHE_RESULT_MAX) |
0b668bc9 ACM |
554 | goto out_err; |
555 | ||
556 | err = "invalid-cache"; | |
557 | if (!perf_evsel__is_cache_op_valid(type, op)) | |
558 | goto out_err; | |
559 | ||
560 | return __perf_evsel__hw_cache_type_op_res_name(type, op, result, bf, size); | |
561 | out_err: | |
562 | return scnprintf(bf, size, "%s", err); | |
563 | } | |
564 | ||
565 | static int perf_evsel__hw_cache_name(struct perf_evsel *evsel, char *bf, size_t size) | |
566 | { | |
567 | int ret = __perf_evsel__hw_cache_name(evsel->attr.config, bf, size); | |
568 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); | |
569 | } | |
570 | ||
6eef3d9c ACM |
571 | static int perf_evsel__raw_name(struct perf_evsel *evsel, char *bf, size_t size) |
572 | { | |
573 | int ret = scnprintf(bf, size, "raw 0x%" PRIx64, evsel->attr.config); | |
574 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); | |
575 | } | |
576 | ||
7289f83c | 577 | const char *perf_evsel__name(struct perf_evsel *evsel) |
a4460836 | 578 | { |
7289f83c | 579 | char bf[128]; |
a4460836 | 580 | |
7289f83c ACM |
581 | if (evsel->name) |
582 | return evsel->name; | |
c410431c ACM |
583 | |
584 | switch (evsel->attr.type) { | |
585 | case PERF_TYPE_RAW: | |
6eef3d9c | 586 | perf_evsel__raw_name(evsel, bf, sizeof(bf)); |
c410431c ACM |
587 | break; |
588 | ||
589 | case PERF_TYPE_HARDWARE: | |
7289f83c | 590 | perf_evsel__hw_name(evsel, bf, sizeof(bf)); |
c410431c | 591 | break; |
0b668bc9 ACM |
592 | |
593 | case PERF_TYPE_HW_CACHE: | |
7289f83c | 594 | perf_evsel__hw_cache_name(evsel, bf, sizeof(bf)); |
0b668bc9 ACM |
595 | break; |
596 | ||
335c2f5d | 597 | case PERF_TYPE_SOFTWARE: |
7289f83c | 598 | perf_evsel__sw_name(evsel, bf, sizeof(bf)); |
335c2f5d ACM |
599 | break; |
600 | ||
a4460836 | 601 | case PERF_TYPE_TRACEPOINT: |
7289f83c | 602 | scnprintf(bf, sizeof(bf), "%s", "unknown tracepoint"); |
a4460836 ACM |
603 | break; |
604 | ||
287e74aa JO |
605 | case PERF_TYPE_BREAKPOINT: |
606 | perf_evsel__bp_name(evsel, bf, sizeof(bf)); | |
607 | break; | |
608 | ||
c410431c | 609 | default: |
ca1b1457 RR |
610 | scnprintf(bf, sizeof(bf), "unknown attr type: %d", |
611 | evsel->attr.type); | |
a4460836 | 612 | break; |
c410431c ACM |
613 | } |
614 | ||
7289f83c ACM |
615 | evsel->name = strdup(bf); |
616 | ||
617 | return evsel->name ?: "unknown"; | |
c410431c ACM |
618 | } |
619 | ||
717e263f NK |
620 | const char *perf_evsel__group_name(struct perf_evsel *evsel) |
621 | { | |
622 | return evsel->group_name ?: "anon group"; | |
623 | } | |
624 | ||
8ef278bb JO |
625 | /* |
626 | * Returns the group details for the specified leader, | |
627 | * with following rules. | |
628 | * | |
629 | * For record -e '{cycles,instructions}' | |
630 | * 'anon group { cycles:u, instructions:u }' | |
631 | * | |
632 | * For record -e 'cycles,instructions' and report --group | |
633 | * 'cycles:u, instructions:u' | |
634 | */ | |
717e263f NK |
635 | int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size) |
636 | { | |
8ef278bb | 637 | int ret = 0; |
717e263f NK |
638 | struct perf_evsel *pos; |
639 | const char *group_name = perf_evsel__group_name(evsel); | |
640 | ||
8ef278bb JO |
641 | if (!evsel->forced_leader) |
642 | ret = scnprintf(buf, size, "%s { ", group_name); | |
717e263f | 643 | |
8ef278bb | 644 | ret += scnprintf(buf + ret, size - ret, "%s", |
717e263f NK |
645 | perf_evsel__name(evsel)); |
646 | ||
647 | for_each_group_member(pos, evsel) | |
648 | ret += scnprintf(buf + ret, size - ret, ", %s", | |
649 | perf_evsel__name(pos)); | |
650 | ||
8ef278bb JO |
651 | if (!evsel->forced_leader) |
652 | ret += scnprintf(buf + ret, size - ret, " }"); | |
717e263f NK |
653 | |
654 | return ret; | |
655 | } | |
656 | ||
1688c2fd ACM |
657 | static void __perf_evsel__config_callchain(struct perf_evsel *evsel, |
658 | struct record_opts *opts, | |
659 | struct callchain_param *param) | |
6bedfab6 JO |
660 | { |
661 | bool function = perf_evsel__is_function_event(evsel); | |
662 | struct perf_event_attr *attr = &evsel->attr; | |
663 | ||
664 | perf_evsel__set_sample_bit(evsel, CALLCHAIN); | |
665 | ||
792d48b4 ACM |
666 | attr->sample_max_stack = param->max_stack; |
667 | ||
c3a6a8c4 | 668 | if (param->record_mode == CALLCHAIN_LBR) { |
aad2b21c KL |
669 | if (!opts->branch_stack) { |
670 | if (attr->exclude_user) { | |
671 | pr_warning("LBR callstack option is only available " | |
672 | "to get user callchain information. " | |
673 | "Falling back to framepointers.\n"); | |
674 | } else { | |
675 | perf_evsel__set_sample_bit(evsel, BRANCH_STACK); | |
676 | attr->branch_sample_type = PERF_SAMPLE_BRANCH_USER | | |
bd0f8895 AK |
677 | PERF_SAMPLE_BRANCH_CALL_STACK | |
678 | PERF_SAMPLE_BRANCH_NO_CYCLES | | |
679 | PERF_SAMPLE_BRANCH_NO_FLAGS; | |
aad2b21c KL |
680 | } |
681 | } else | |
682 | pr_warning("Cannot use LBR callstack with branch stack. " | |
683 | "Falling back to framepointers.\n"); | |
684 | } | |
685 | ||
c3a6a8c4 | 686 | if (param->record_mode == CALLCHAIN_DWARF) { |
6bedfab6 JO |
687 | if (!function) { |
688 | perf_evsel__set_sample_bit(evsel, REGS_USER); | |
689 | perf_evsel__set_sample_bit(evsel, STACK_USER); | |
84c41742 | 690 | attr->sample_regs_user |= PERF_REGS_MASK; |
c3a6a8c4 | 691 | attr->sample_stack_user = param->dump_size; |
6bedfab6 JO |
692 | attr->exclude_callchain_user = 1; |
693 | } else { | |
694 | pr_info("Cannot use DWARF unwind for function trace event," | |
695 | " falling back to framepointers.\n"); | |
696 | } | |
697 | } | |
698 | ||
699 | if (function) { | |
700 | pr_info("Disabling user space callchains for function trace event.\n"); | |
701 | attr->exclude_callchain_user = 1; | |
702 | } | |
703 | } | |
704 | ||
1688c2fd ACM |
705 | void perf_evsel__config_callchain(struct perf_evsel *evsel, |
706 | struct record_opts *opts, | |
707 | struct callchain_param *param) | |
708 | { | |
709 | if (param->enabled) | |
710 | return __perf_evsel__config_callchain(evsel, opts, param); | |
711 | } | |
712 | ||
d457c963 KL |
713 | static void |
714 | perf_evsel__reset_callgraph(struct perf_evsel *evsel, | |
715 | struct callchain_param *param) | |
716 | { | |
717 | struct perf_event_attr *attr = &evsel->attr; | |
718 | ||
719 | perf_evsel__reset_sample_bit(evsel, CALLCHAIN); | |
720 | if (param->record_mode == CALLCHAIN_LBR) { | |
721 | perf_evsel__reset_sample_bit(evsel, BRANCH_STACK); | |
722 | attr->branch_sample_type &= ~(PERF_SAMPLE_BRANCH_USER | | |
723 | PERF_SAMPLE_BRANCH_CALL_STACK); | |
724 | } | |
725 | if (param->record_mode == CALLCHAIN_DWARF) { | |
726 | perf_evsel__reset_sample_bit(evsel, REGS_USER); | |
727 | perf_evsel__reset_sample_bit(evsel, STACK_USER); | |
728 | } | |
729 | } | |
730 | ||
731 | static void apply_config_terms(struct perf_evsel *evsel, | |
0d3dcc0e | 732 | struct record_opts *opts, bool track) |
930a2e29 JO |
733 | { |
734 | struct perf_evsel_config_term *term; | |
32067712 KL |
735 | struct list_head *config_terms = &evsel->config_terms; |
736 | struct perf_event_attr *attr = &evsel->attr; | |
249d98e5 ACM |
737 | /* callgraph default */ |
738 | struct callchain_param param = { | |
739 | .record_mode = callchain_param.record_mode, | |
740 | }; | |
d457c963 | 741 | u32 dump_size = 0; |
792d48b4 ACM |
742 | int max_stack = 0; |
743 | const char *callgraph_buf = NULL; | |
d457c963 | 744 | |
930a2e29 JO |
745 | list_for_each_entry(term, config_terms, list) { |
746 | switch (term->type) { | |
ee4c7588 | 747 | case PERF_EVSEL__CONFIG_TERM_PERIOD: |
c2f1cead AK |
748 | if (!(term->weak && opts->user_interval != ULLONG_MAX)) { |
749 | attr->sample_period = term->val.period; | |
750 | attr->freq = 0; | |
49c0ae80 | 751 | perf_evsel__reset_sample_bit(evsel, PERIOD); |
c2f1cead | 752 | } |
32067712 | 753 | break; |
09af2a55 | 754 | case PERF_EVSEL__CONFIG_TERM_FREQ: |
c2f1cead AK |
755 | if (!(term->weak && opts->user_freq != UINT_MAX)) { |
756 | attr->sample_freq = term->val.freq; | |
757 | attr->freq = 1; | |
49c0ae80 | 758 | perf_evsel__set_sample_bit(evsel, PERIOD); |
c2f1cead | 759 | } |
09af2a55 | 760 | break; |
32067712 KL |
761 | case PERF_EVSEL__CONFIG_TERM_TIME: |
762 | if (term->val.time) | |
763 | perf_evsel__set_sample_bit(evsel, TIME); | |
764 | else | |
765 | perf_evsel__reset_sample_bit(evsel, TIME); | |
766 | break; | |
d457c963 KL |
767 | case PERF_EVSEL__CONFIG_TERM_CALLGRAPH: |
768 | callgraph_buf = term->val.callgraph; | |
769 | break; | |
ac12f676 AK |
770 | case PERF_EVSEL__CONFIG_TERM_BRANCH: |
771 | if (term->val.branch && strcmp(term->val.branch, "no")) { | |
772 | perf_evsel__set_sample_bit(evsel, BRANCH_STACK); | |
773 | parse_branch_str(term->val.branch, | |
774 | &attr->branch_sample_type); | |
775 | } else | |
776 | perf_evsel__reset_sample_bit(evsel, BRANCH_STACK); | |
777 | break; | |
d457c963 KL |
778 | case PERF_EVSEL__CONFIG_TERM_STACK_USER: |
779 | dump_size = term->val.stack_user; | |
780 | break; | |
792d48b4 ACM |
781 | case PERF_EVSEL__CONFIG_TERM_MAX_STACK: |
782 | max_stack = term->val.max_stack; | |
783 | break; | |
374ce938 WN |
784 | case PERF_EVSEL__CONFIG_TERM_INHERIT: |
785 | /* | |
786 | * attr->inherit should has already been set by | |
787 | * perf_evsel__config. If user explicitly set | |
788 | * inherit using config terms, override global | |
789 | * opt->no_inherit setting. | |
790 | */ | |
791 | attr->inherit = term->val.inherit ? 1 : 0; | |
792 | break; | |
626a6b78 WN |
793 | case PERF_EVSEL__CONFIG_TERM_OVERWRITE: |
794 | attr->write_backward = term->val.overwrite ? 1 : 0; | |
795 | break; | |
d0565132 | 796 | case PERF_EVSEL__CONFIG_TERM_DRV_CFG: |
2178790b | 797 | break; |
930a2e29 JO |
798 | default: |
799 | break; | |
800 | } | |
801 | } | |
d457c963 KL |
802 | |
803 | /* User explicitly set per-event callgraph, clear the old setting and reset. */ | |
792d48b4 | 804 | if ((callgraph_buf != NULL) || (dump_size > 0) || max_stack) { |
0d3dcc0e ACM |
805 | bool sample_address = false; |
806 | ||
792d48b4 ACM |
807 | if (max_stack) { |
808 | param.max_stack = max_stack; | |
809 | if (callgraph_buf == NULL) | |
810 | callgraph_buf = "fp"; | |
811 | } | |
d457c963 KL |
812 | |
813 | /* parse callgraph parameters */ | |
814 | if (callgraph_buf != NULL) { | |
f9db0d0f KL |
815 | if (!strcmp(callgraph_buf, "no")) { |
816 | param.enabled = false; | |
817 | param.record_mode = CALLCHAIN_NONE; | |
818 | } else { | |
819 | param.enabled = true; | |
820 | if (parse_callchain_record(callgraph_buf, ¶m)) { | |
821 | pr_err("per-event callgraph setting for %s failed. " | |
822 | "Apply callgraph global setting for it\n", | |
823 | evsel->name); | |
824 | return; | |
825 | } | |
0d3dcc0e ACM |
826 | if (param.record_mode == CALLCHAIN_DWARF) |
827 | sample_address = true; | |
d457c963 KL |
828 | } |
829 | } | |
830 | if (dump_size > 0) { | |
831 | dump_size = round_up(dump_size, sizeof(u64)); | |
832 | param.dump_size = dump_size; | |
833 | } | |
834 | ||
835 | /* If global callgraph set, clear it */ | |
836 | if (callchain_param.enabled) | |
837 | perf_evsel__reset_callgraph(evsel, &callchain_param); | |
838 | ||
839 | /* set perf-event callgraph */ | |
0d3dcc0e ACM |
840 | if (param.enabled) { |
841 | if (sample_address) { | |
842 | perf_evsel__set_sample_bit(evsel, ADDR); | |
843 | perf_evsel__set_sample_bit(evsel, DATA_SRC); | |
844 | evsel->attr.mmap_data = track; | |
845 | } | |
01e0d50c | 846 | perf_evsel__config_callchain(evsel, opts, ¶m); |
0d3dcc0e | 847 | } |
d457c963 | 848 | } |
930a2e29 JO |
849 | } |
850 | ||
774cb499 JO |
851 | /* |
852 | * The enable_on_exec/disabled value strategy: | |
853 | * | |
854 | * 1) For any type of traced program: | |
855 | * - all independent events and group leaders are disabled | |
856 | * - all group members are enabled | |
857 | * | |
858 | * Group members are ruled by group leaders. They need to | |
859 | * be enabled, because the group scheduling relies on that. | |
860 | * | |
861 | * 2) For traced programs executed by perf: | |
862 | * - all independent events and group leaders have | |
863 | * enable_on_exec set | |
864 | * - we don't specifically enable or disable any event during | |
865 | * the record command | |
866 | * | |
867 | * Independent events and group leaders are initially disabled | |
868 | * and get enabled by exec. Group members are ruled by group | |
869 | * leaders as stated in 1). | |
870 | * | |
871 | * 3) For traced programs attached by perf (pid/tid): | |
872 | * - we specifically enable or disable all events during | |
873 | * the record command | |
874 | * | |
875 | * When attaching events to already running traced we | |
876 | * enable/disable events specifically, as there's no | |
877 | * initial traced exec call. | |
878 | */ | |
e68ae9cf ACM |
879 | void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts, |
880 | struct callchain_param *callchain) | |
0f82ebc4 | 881 | { |
3c176311 | 882 | struct perf_evsel *leader = evsel->leader; |
0f82ebc4 | 883 | struct perf_event_attr *attr = &evsel->attr; |
60b0896c | 884 | int track = evsel->tracking; |
3aa5939d | 885 | bool per_cpu = opts->target.default_per_cpu && !opts->target.per_thread; |
0f82ebc4 | 886 | |
594ac61a | 887 | attr->sample_id_all = perf_missing_features.sample_id_all ? 0 : 1; |
0f82ebc4 | 888 | attr->inherit = !opts->no_inherit; |
626a6b78 | 889 | attr->write_backward = opts->overwrite ? 1 : 0; |
0f82ebc4 | 890 | |
7be5ebe8 ACM |
891 | perf_evsel__set_sample_bit(evsel, IP); |
892 | perf_evsel__set_sample_bit(evsel, TID); | |
0f82ebc4 | 893 | |
3c176311 JO |
894 | if (evsel->sample_read) { |
895 | perf_evsel__set_sample_bit(evsel, READ); | |
896 | ||
897 | /* | |
898 | * We need ID even in case of single event, because | |
899 | * PERF_SAMPLE_READ process ID specific data. | |
900 | */ | |
75562573 | 901 | perf_evsel__set_sample_id(evsel, false); |
3c176311 JO |
902 | |
903 | /* | |
904 | * Apply group format only if we belong to group | |
905 | * with more than one members. | |
906 | */ | |
907 | if (leader->nr_members > 1) { | |
908 | attr->read_format |= PERF_FORMAT_GROUP; | |
909 | attr->inherit = 0; | |
910 | } | |
911 | } | |
912 | ||
0f82ebc4 | 913 | /* |
17314e23 | 914 | * We default some events to have a default interval. But keep |
0f82ebc4 ACM |
915 | * it a weak assumption overridable by the user. |
916 | */ | |
17314e23 | 917 | if (!attr->sample_period || (opts->user_freq != UINT_MAX || |
0f82ebc4 ACM |
918 | opts->user_interval != ULLONG_MAX)) { |
919 | if (opts->freq) { | |
7be5ebe8 | 920 | perf_evsel__set_sample_bit(evsel, PERIOD); |
0f82ebc4 ACM |
921 | attr->freq = 1; |
922 | attr->sample_freq = opts->freq; | |
923 | } else { | |
924 | attr->sample_period = opts->default_interval; | |
925 | } | |
926 | } | |
927 | ||
3c176311 JO |
928 | /* |
929 | * Disable sampling for all group members other | |
930 | * than leader in case leader 'leads' the sampling. | |
931 | */ | |
932 | if ((leader != evsel) && leader->sample_read) { | |
e9add8ba JO |
933 | attr->freq = 0; |
934 | attr->sample_freq = 0; | |
935 | attr->sample_period = 0; | |
936 | attr->write_backward = 0; | |
937 | attr->sample_id_all = 0; | |
3c176311 JO |
938 | } |
939 | ||
0f82ebc4 ACM |
940 | if (opts->no_samples) |
941 | attr->sample_freq = 0; | |
942 | ||
a17f0697 JO |
943 | if (opts->inherit_stat) { |
944 | evsel->attr.read_format |= | |
945 | PERF_FORMAT_TOTAL_TIME_ENABLED | | |
946 | PERF_FORMAT_TOTAL_TIME_RUNNING | | |
947 | PERF_FORMAT_ID; | |
0f82ebc4 | 948 | attr->inherit_stat = 1; |
a17f0697 | 949 | } |
0f82ebc4 ACM |
950 | |
951 | if (opts->sample_address) { | |
7be5ebe8 | 952 | perf_evsel__set_sample_bit(evsel, ADDR); |
0f82ebc4 ACM |
953 | attr->mmap_data = track; |
954 | } | |
955 | ||
f140373b JO |
956 | /* |
957 | * We don't allow user space callchains for function trace | |
958 | * event, due to issues with page faults while tracing page | |
959 | * fault handler and its overall trickiness nature. | |
960 | */ | |
961 | if (perf_evsel__is_function_event(evsel)) | |
962 | evsel->attr.exclude_callchain_user = 1; | |
963 | ||
e68ae9cf | 964 | if (callchain && callchain->enabled && !evsel->no_aux_samples) |
01e0d50c | 965 | perf_evsel__config_callchain(evsel, opts, callchain); |
26d33022 | 966 | |
6a21c0b5 | 967 | if (opts->sample_intr_regs) { |
bcc84ec6 | 968 | attr->sample_regs_intr = opts->sample_intr_regs; |
6a21c0b5 SE |
969 | perf_evsel__set_sample_bit(evsel, REGS_INTR); |
970 | } | |
971 | ||
84c41742 AK |
972 | if (opts->sample_user_regs) { |
973 | attr->sample_regs_user |= opts->sample_user_regs; | |
974 | perf_evsel__set_sample_bit(evsel, REGS_USER); | |
975 | } | |
976 | ||
b6f35ed7 | 977 | if (target__has_cpu(&opts->target) || opts->sample_cpu) |
7be5ebe8 | 978 | perf_evsel__set_sample_bit(evsel, CPU); |
0f82ebc4 | 979 | |
8affc2b8 | 980 | /* |
bd1a0be5 | 981 | * When the user explicitly disabled time don't force it here. |
8affc2b8 AK |
982 | */ |
983 | if (opts->sample_time && | |
984 | (!perf_missing_features.sample_id_all && | |
3abebc55 AH |
985 | (!opts->no_inherit || target__has_cpu(&opts->target) || per_cpu || |
986 | opts->sample_time_set))) | |
7be5ebe8 | 987 | perf_evsel__set_sample_bit(evsel, TIME); |
0f82ebc4 | 988 | |
6ff1ce76 | 989 | if (opts->raw_samples && !evsel->no_aux_samples) { |
7be5ebe8 ACM |
990 | perf_evsel__set_sample_bit(evsel, TIME); |
991 | perf_evsel__set_sample_bit(evsel, RAW); | |
992 | perf_evsel__set_sample_bit(evsel, CPU); | |
0f82ebc4 ACM |
993 | } |
994 | ||
ccf49bfc | 995 | if (opts->sample_address) |
1e7ed5ec | 996 | perf_evsel__set_sample_bit(evsel, DATA_SRC); |
ccf49bfc | 997 | |
3b0a5daa KL |
998 | if (opts->sample_phys_addr) |
999 | perf_evsel__set_sample_bit(evsel, PHYS_ADDR); | |
1000 | ||
509051ea | 1001 | if (opts->no_buffering) { |
0f82ebc4 ACM |
1002 | attr->watermark = 0; |
1003 | attr->wakeup_events = 1; | |
1004 | } | |
6ff1ce76 | 1005 | if (opts->branch_stack && !evsel->no_aux_samples) { |
7be5ebe8 | 1006 | perf_evsel__set_sample_bit(evsel, BRANCH_STACK); |
bdfebd84 RAV |
1007 | attr->branch_sample_type = opts->branch_stack; |
1008 | } | |
0f82ebc4 | 1009 | |
05484298 | 1010 | if (opts->sample_weight) |
1e7ed5ec | 1011 | perf_evsel__set_sample_bit(evsel, WEIGHT); |
05484298 | 1012 | |
62e503b7 | 1013 | attr->task = track; |
5c5e854b | 1014 | attr->mmap = track; |
a5a5ba72 | 1015 | attr->mmap2 = track && !perf_missing_features.mmap2; |
5c5e854b | 1016 | attr->comm = track; |
0f82ebc4 | 1017 | |
f3b3614a HB |
1018 | if (opts->record_namespaces) |
1019 | attr->namespaces = track; | |
1020 | ||
b757bb09 AH |
1021 | if (opts->record_switch_events) |
1022 | attr->context_switch = track; | |
1023 | ||
475eeab9 | 1024 | if (opts->sample_transaction) |
1e7ed5ec | 1025 | perf_evsel__set_sample_bit(evsel, TRANSACTION); |
475eeab9 | 1026 | |
85c273d2 AK |
1027 | if (opts->running_time) { |
1028 | evsel->attr.read_format |= | |
1029 | PERF_FORMAT_TOTAL_TIME_ENABLED | | |
1030 | PERF_FORMAT_TOTAL_TIME_RUNNING; | |
1031 | } | |
1032 | ||
774cb499 JO |
1033 | /* |
1034 | * XXX see the function comment above | |
1035 | * | |
1036 | * Disabling only independent events or group leaders, | |
1037 | * keeping group members enabled. | |
1038 | */ | |
823254ed | 1039 | if (perf_evsel__is_group_leader(evsel)) |
774cb499 JO |
1040 | attr->disabled = 1; |
1041 | ||
1042 | /* | |
1043 | * Setting enable_on_exec for independent events and | |
1044 | * group leaders for traced executed by perf. | |
1045 | */ | |
6619a53e AK |
1046 | if (target__none(&opts->target) && perf_evsel__is_group_leader(evsel) && |
1047 | !opts->initial_delay) | |
0f82ebc4 | 1048 | attr->enable_on_exec = 1; |
2afd2bcf AH |
1049 | |
1050 | if (evsel->immediate) { | |
1051 | attr->disabled = 0; | |
1052 | attr->enable_on_exec = 0; | |
1053 | } | |
814c8c38 PZ |
1054 | |
1055 | clockid = opts->clockid; | |
1056 | if (opts->use_clockid) { | |
1057 | attr->use_clockid = 1; | |
1058 | attr->clockid = opts->clockid; | |
1059 | } | |
930a2e29 | 1060 | |
7f94af7a JO |
1061 | if (evsel->precise_max) |
1062 | perf_event_attr__set_max_precise_ip(attr); | |
1063 | ||
85723885 JO |
1064 | if (opts->all_user) { |
1065 | attr->exclude_kernel = 1; | |
1066 | attr->exclude_user = 0; | |
1067 | } | |
1068 | ||
1069 | if (opts->all_kernel) { | |
1070 | attr->exclude_kernel = 0; | |
1071 | attr->exclude_user = 1; | |
1072 | } | |
1073 | ||
930a2e29 JO |
1074 | /* |
1075 | * Apply event specific term settings, | |
1076 | * it overloads any global configuration. | |
1077 | */ | |
0d3dcc0e | 1078 | apply_config_terms(evsel, opts, track); |
a359c17a JO |
1079 | |
1080 | evsel->ignore_missing_thread = opts->ignore_missing_thread; | |
f290aa1f JO |
1081 | |
1082 | /* The --period option takes the precedence. */ | |
1083 | if (opts->period_set) { | |
1084 | if (opts->period) | |
1085 | perf_evsel__set_sample_bit(evsel, PERIOD); | |
1086 | else | |
1087 | perf_evsel__reset_sample_bit(evsel, PERIOD); | |
1088 | } | |
0f82ebc4 ACM |
1089 | } |
1090 | ||
8885846f | 1091 | static int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads) |
69aad6f1 | 1092 | { |
bf8e8f4b AH |
1093 | if (evsel->system_wide) |
1094 | nthreads = 1; | |
1095 | ||
69aad6f1 | 1096 | evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int)); |
4af4c955 DA |
1097 | |
1098 | if (evsel->fd) { | |
18ef15c6 | 1099 | int cpu, thread; |
4af4c955 DA |
1100 | for (cpu = 0; cpu < ncpus; cpu++) { |
1101 | for (thread = 0; thread < nthreads; thread++) { | |
1102 | FD(evsel, cpu, thread) = -1; | |
1103 | } | |
1104 | } | |
1105 | } | |
1106 | ||
69aad6f1 ACM |
1107 | return evsel->fd != NULL ? 0 : -ENOMEM; |
1108 | } | |
1109 | ||
475fb533 | 1110 | static int perf_evsel__run_ioctl(struct perf_evsel *evsel, |
e2407bef | 1111 | int ioc, void *arg) |
745cefc5 ACM |
1112 | { |
1113 | int cpu, thread; | |
1114 | ||
475fb533 AK |
1115 | for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++) { |
1116 | for (thread = 0; thread < xyarray__max_y(evsel->fd); thread++) { | |
745cefc5 | 1117 | int fd = FD(evsel, cpu, thread), |
e2407bef | 1118 | err = ioctl(fd, ioc, arg); |
745cefc5 ACM |
1119 | |
1120 | if (err) | |
1121 | return err; | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | return 0; | |
1126 | } | |
1127 | ||
475fb533 | 1128 | int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter) |
e2407bef | 1129 | { |
475fb533 | 1130 | return perf_evsel__run_ioctl(evsel, |
e2407bef AK |
1131 | PERF_EVENT_IOC_SET_FILTER, |
1132 | (void *)filter); | |
1133 | } | |
1134 | ||
12467ae4 ACM |
1135 | int perf_evsel__set_filter(struct perf_evsel *evsel, const char *filter) |
1136 | { | |
1137 | char *new_filter = strdup(filter); | |
1138 | ||
1139 | if (new_filter != NULL) { | |
1140 | free(evsel->filter); | |
1141 | evsel->filter = new_filter; | |
1142 | return 0; | |
1143 | } | |
1144 | ||
1145 | return -1; | |
1146 | } | |
1147 | ||
3541c034 MP |
1148 | static int perf_evsel__append_filter(struct perf_evsel *evsel, |
1149 | const char *fmt, const char *filter) | |
64ec84f5 ACM |
1150 | { |
1151 | char *new_filter; | |
1152 | ||
1153 | if (evsel->filter == NULL) | |
1154 | return perf_evsel__set_filter(evsel, filter); | |
1155 | ||
b15d0a4c | 1156 | if (asprintf(&new_filter, fmt, evsel->filter, filter) > 0) { |
64ec84f5 ACM |
1157 | free(evsel->filter); |
1158 | evsel->filter = new_filter; | |
1159 | return 0; | |
1160 | } | |
1161 | ||
1162 | return -1; | |
1163 | } | |
1164 | ||
3541c034 MP |
1165 | int perf_evsel__append_tp_filter(struct perf_evsel *evsel, const char *filter) |
1166 | { | |
1167 | return perf_evsel__append_filter(evsel, "(%s) && (%s)", filter); | |
1168 | } | |
1169 | ||
1e857484 MP |
1170 | int perf_evsel__append_addr_filter(struct perf_evsel *evsel, const char *filter) |
1171 | { | |
1172 | return perf_evsel__append_filter(evsel, "%s,%s", filter); | |
1173 | } | |
1174 | ||
5cd95fc3 | 1175 | int perf_evsel__enable(struct perf_evsel *evsel) |
e2407bef | 1176 | { |
475fb533 | 1177 | return perf_evsel__run_ioctl(evsel, |
e2407bef AK |
1178 | PERF_EVENT_IOC_ENABLE, |
1179 | 0); | |
1180 | } | |
1181 | ||
e98a4cbb JO |
1182 | int perf_evsel__disable(struct perf_evsel *evsel) |
1183 | { | |
475fb533 | 1184 | return perf_evsel__run_ioctl(evsel, |
e98a4cbb JO |
1185 | PERF_EVENT_IOC_DISABLE, |
1186 | 0); | |
1187 | } | |
1188 | ||
70db7533 ACM |
1189 | int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads) |
1190 | { | |
8d9cbd8f VG |
1191 | if (ncpus == 0 || nthreads == 0) |
1192 | return 0; | |
1193 | ||
bf8e8f4b AH |
1194 | if (evsel->system_wide) |
1195 | nthreads = 1; | |
1196 | ||
a91e5431 ACM |
1197 | evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id)); |
1198 | if (evsel->sample_id == NULL) | |
1199 | return -ENOMEM; | |
1200 | ||
1201 | evsel->id = zalloc(ncpus * nthreads * sizeof(u64)); | |
1202 | if (evsel->id == NULL) { | |
1203 | xyarray__delete(evsel->sample_id); | |
1204 | evsel->sample_id = NULL; | |
1205 | return -ENOMEM; | |
1206 | } | |
1207 | ||
1208 | return 0; | |
70db7533 ACM |
1209 | } |
1210 | ||
8885846f | 1211 | static void perf_evsel__free_fd(struct perf_evsel *evsel) |
69aad6f1 ACM |
1212 | { |
1213 | xyarray__delete(evsel->fd); | |
1214 | evsel->fd = NULL; | |
1215 | } | |
1216 | ||
8885846f | 1217 | static void perf_evsel__free_id(struct perf_evsel *evsel) |
70db7533 | 1218 | { |
a91e5431 ACM |
1219 | xyarray__delete(evsel->sample_id); |
1220 | evsel->sample_id = NULL; | |
04662523 | 1221 | zfree(&evsel->id); |
70db7533 ACM |
1222 | } |
1223 | ||
930a2e29 JO |
1224 | static void perf_evsel__free_config_terms(struct perf_evsel *evsel) |
1225 | { | |
1226 | struct perf_evsel_config_term *term, *h; | |
1227 | ||
1228 | list_for_each_entry_safe(term, h, &evsel->config_terms, list) { | |
1229 | list_del(&term->list); | |
1230 | free(term); | |
1231 | } | |
1232 | } | |
1233 | ||
475fb533 | 1234 | void perf_evsel__close_fd(struct perf_evsel *evsel) |
c52b12ed ACM |
1235 | { |
1236 | int cpu, thread; | |
1237 | ||
475fb533 AK |
1238 | for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++) |
1239 | for (thread = 0; thread < xyarray__max_y(evsel->fd); ++thread) { | |
c52b12ed ACM |
1240 | close(FD(evsel, cpu, thread)); |
1241 | FD(evsel, cpu, thread) = -1; | |
1242 | } | |
1243 | } | |
1244 | ||
ef1d1af2 | 1245 | void perf_evsel__exit(struct perf_evsel *evsel) |
69aad6f1 ACM |
1246 | { |
1247 | assert(list_empty(&evsel->node)); | |
d49e4695 | 1248 | assert(evsel->evlist == NULL); |
736b05a0 NK |
1249 | perf_evsel__free_fd(evsel); |
1250 | perf_evsel__free_id(evsel); | |
930a2e29 | 1251 | perf_evsel__free_config_terms(evsel); |
a53b6460 | 1252 | cgroup__put(evsel->cgrp); |
f30a79b0 | 1253 | cpu_map__put(evsel->cpus); |
fce4d296 | 1254 | cpu_map__put(evsel->own_cpus); |
578e91ec | 1255 | thread_map__put(evsel->threads); |
597e48c1 | 1256 | zfree(&evsel->group_name); |
597e48c1 | 1257 | zfree(&evsel->name); |
ce8ccff5 | 1258 | perf_evsel__object.fini(evsel); |
ef1d1af2 ACM |
1259 | } |
1260 | ||
1261 | void perf_evsel__delete(struct perf_evsel *evsel) | |
1262 | { | |
1263 | perf_evsel__exit(evsel); | |
69aad6f1 ACM |
1264 | free(evsel); |
1265 | } | |
c52b12ed | 1266 | |
a6fa0038 | 1267 | void perf_evsel__compute_deltas(struct perf_evsel *evsel, int cpu, int thread, |
857a94a2 | 1268 | struct perf_counts_values *count) |
c7a79c47 SE |
1269 | { |
1270 | struct perf_counts_values tmp; | |
1271 | ||
1272 | if (!evsel->prev_raw_counts) | |
1273 | return; | |
1274 | ||
1275 | if (cpu == -1) { | |
1276 | tmp = evsel->prev_raw_counts->aggr; | |
1277 | evsel->prev_raw_counts->aggr = *count; | |
1278 | } else { | |
a6fa0038 JO |
1279 | tmp = *perf_counts(evsel->prev_raw_counts, cpu, thread); |
1280 | *perf_counts(evsel->prev_raw_counts, cpu, thread) = *count; | |
c7a79c47 SE |
1281 | } |
1282 | ||
1283 | count->val = count->val - tmp.val; | |
1284 | count->ena = count->ena - tmp.ena; | |
1285 | count->run = count->run - tmp.run; | |
1286 | } | |
1287 | ||
13112bbf JO |
1288 | void perf_counts_values__scale(struct perf_counts_values *count, |
1289 | bool scale, s8 *pscaled) | |
1290 | { | |
1291 | s8 scaled = 0; | |
1292 | ||
1293 | if (scale) { | |
1294 | if (count->run == 0) { | |
1295 | scaled = -1; | |
1296 | count->val = 0; | |
1297 | } else if (count->run < count->ena) { | |
1298 | scaled = 1; | |
1299 | count->val = (u64)((double) count->val * count->ena / count->run + 0.5); | |
1300 | } | |
1301 | } else | |
1302 | count->ena = count->run = 0; | |
1303 | ||
1304 | if (pscaled) | |
1305 | *pscaled = scaled; | |
1306 | } | |
1307 | ||
de63403b JO |
1308 | static int perf_evsel__read_size(struct perf_evsel *evsel) |
1309 | { | |
1310 | u64 read_format = evsel->attr.read_format; | |
1311 | int entry = sizeof(u64); /* value */ | |
1312 | int size = 0; | |
1313 | int nr = 1; | |
1314 | ||
1315 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) | |
1316 | size += sizeof(u64); | |
1317 | ||
1318 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) | |
1319 | size += sizeof(u64); | |
1320 | ||
1321 | if (read_format & PERF_FORMAT_ID) | |
1322 | entry += sizeof(u64); | |
1323 | ||
1324 | if (read_format & PERF_FORMAT_GROUP) { | |
1325 | nr = evsel->nr_members; | |
1326 | size += sizeof(u64); | |
1327 | } | |
1328 | ||
1329 | size += entry * nr; | |
1330 | return size; | |
1331 | } | |
1332 | ||
f99f4719 JO |
1333 | int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread, |
1334 | struct perf_counts_values *count) | |
1335 | { | |
de63403b JO |
1336 | size_t size = perf_evsel__read_size(evsel); |
1337 | ||
f99f4719 JO |
1338 | memset(count, 0, sizeof(*count)); |
1339 | ||
1340 | if (FD(evsel, cpu, thread) < 0) | |
1341 | return -EINVAL; | |
1342 | ||
de63403b | 1343 | if (readn(FD(evsel, cpu, thread), count->values, size) <= 0) |
f99f4719 JO |
1344 | return -errno; |
1345 | ||
1346 | return 0; | |
1347 | } | |
1348 | ||
f7794d52 JO |
1349 | static int |
1350 | perf_evsel__read_one(struct perf_evsel *evsel, int cpu, int thread) | |
1351 | { | |
1352 | struct perf_counts_values *count = perf_counts(evsel->counts, cpu, thread); | |
1353 | ||
1354 | return perf_evsel__read(evsel, cpu, thread, count); | |
1355 | } | |
1356 | ||
1357 | static void | |
1358 | perf_evsel__set_count(struct perf_evsel *counter, int cpu, int thread, | |
1359 | u64 val, u64 ena, u64 run) | |
1360 | { | |
1361 | struct perf_counts_values *count; | |
1362 | ||
1363 | count = perf_counts(counter->counts, cpu, thread); | |
1364 | ||
1365 | count->val = val; | |
1366 | count->ena = ena; | |
1367 | count->run = run; | |
82bf311e | 1368 | count->loaded = true; |
f7794d52 JO |
1369 | } |
1370 | ||
1371 | static int | |
1372 | perf_evsel__process_group_data(struct perf_evsel *leader, | |
1373 | int cpu, int thread, u64 *data) | |
1374 | { | |
1375 | u64 read_format = leader->attr.read_format; | |
1376 | struct sample_read_value *v; | |
1377 | u64 nr, ena = 0, run = 0, i; | |
1378 | ||
1379 | nr = *data++; | |
1380 | ||
1381 | if (nr != (u64) leader->nr_members) | |
1382 | return -EINVAL; | |
1383 | ||
1384 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) | |
1385 | ena = *data++; | |
1386 | ||
1387 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) | |
1388 | run = *data++; | |
1389 | ||
1390 | v = (struct sample_read_value *) data; | |
1391 | ||
1392 | perf_evsel__set_count(leader, cpu, thread, | |
1393 | v[0].value, ena, run); | |
1394 | ||
1395 | for (i = 1; i < nr; i++) { | |
1396 | struct perf_evsel *counter; | |
1397 | ||
1398 | counter = perf_evlist__id2evsel(leader->evlist, v[i].id); | |
1399 | if (!counter) | |
1400 | return -EINVAL; | |
1401 | ||
1402 | perf_evsel__set_count(counter, cpu, thread, | |
1403 | v[i].value, ena, run); | |
1404 | } | |
1405 | ||
1406 | return 0; | |
1407 | } | |
1408 | ||
1409 | static int | |
1410 | perf_evsel__read_group(struct perf_evsel *leader, int cpu, int thread) | |
1411 | { | |
82806c3a | 1412 | struct perf_stat_evsel *ps = leader->stats; |
f7794d52 JO |
1413 | u64 read_format = leader->attr.read_format; |
1414 | int size = perf_evsel__read_size(leader); | |
1415 | u64 *data = ps->group_data; | |
1416 | ||
1417 | if (!(read_format & PERF_FORMAT_ID)) | |
1418 | return -EINVAL; | |
1419 | ||
1420 | if (!perf_evsel__is_group_leader(leader)) | |
1421 | return -EINVAL; | |
1422 | ||
1423 | if (!data) { | |
1424 | data = zalloc(size); | |
1425 | if (!data) | |
1426 | return -ENOMEM; | |
1427 | ||
1428 | ps->group_data = data; | |
1429 | } | |
1430 | ||
1431 | if (FD(leader, cpu, thread) < 0) | |
1432 | return -EINVAL; | |
1433 | ||
1434 | if (readn(FD(leader, cpu, thread), data, size) <= 0) | |
1435 | return -errno; | |
1436 | ||
1437 | return perf_evsel__process_group_data(leader, cpu, thread, data); | |
1438 | } | |
1439 | ||
1440 | int perf_evsel__read_counter(struct perf_evsel *evsel, int cpu, int thread) | |
1441 | { | |
1442 | u64 read_format = evsel->attr.read_format; | |
1443 | ||
1444 | if (read_format & PERF_FORMAT_GROUP) | |
1445 | return perf_evsel__read_group(evsel, cpu, thread); | |
1446 | else | |
1447 | return perf_evsel__read_one(evsel, cpu, thread); | |
1448 | } | |
1449 | ||
c52b12ed ACM |
1450 | int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, |
1451 | int cpu, int thread, bool scale) | |
1452 | { | |
1453 | struct perf_counts_values count; | |
1454 | size_t nv = scale ? 3 : 1; | |
1455 | ||
1456 | if (FD(evsel, cpu, thread) < 0) | |
1457 | return -EINVAL; | |
1458 | ||
a6fa0038 | 1459 | if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1, thread + 1) < 0) |
4eed11d5 ACM |
1460 | return -ENOMEM; |
1461 | ||
db49a717 | 1462 | if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) <= 0) |
c52b12ed ACM |
1463 | return -errno; |
1464 | ||
a6fa0038 | 1465 | perf_evsel__compute_deltas(evsel, cpu, thread, &count); |
13112bbf | 1466 | perf_counts_values__scale(&count, scale, NULL); |
a6fa0038 | 1467 | *perf_counts(evsel->counts, cpu, thread) = count; |
c52b12ed ACM |
1468 | return 0; |
1469 | } | |
1470 | ||
6a4bb04c JO |
1471 | static int get_group_fd(struct perf_evsel *evsel, int cpu, int thread) |
1472 | { | |
1473 | struct perf_evsel *leader = evsel->leader; | |
1474 | int fd; | |
1475 | ||
823254ed | 1476 | if (perf_evsel__is_group_leader(evsel)) |
6a4bb04c JO |
1477 | return -1; |
1478 | ||
1479 | /* | |
1480 | * Leader must be already processed/open, | |
1481 | * if not it's a bug. | |
1482 | */ | |
1483 | BUG_ON(!leader->fd); | |
1484 | ||
1485 | fd = FD(leader, cpu, thread); | |
1486 | BUG_ON(fd == -1); | |
1487 | ||
1488 | return fd; | |
1489 | } | |
1490 | ||
2c5e8c52 PZ |
1491 | struct bit_names { |
1492 | int bit; | |
1493 | const char *name; | |
1494 | }; | |
1495 | ||
1496 | static void __p_bits(char *buf, size_t size, u64 value, struct bit_names *bits) | |
1497 | { | |
1498 | bool first_bit = true; | |
1499 | int i = 0; | |
1500 | ||
1501 | do { | |
1502 | if (value & bits[i].bit) { | |
1503 | buf += scnprintf(buf, size, "%s%s", first_bit ? "" : "|", bits[i].name); | |
1504 | first_bit = false; | |
1505 | } | |
1506 | } while (bits[++i].name != NULL); | |
1507 | } | |
1508 | ||
1509 | static void __p_sample_type(char *buf, size_t size, u64 value) | |
1510 | { | |
1511 | #define bit_name(n) { PERF_SAMPLE_##n, #n } | |
1512 | struct bit_names bits[] = { | |
1513 | bit_name(IP), bit_name(TID), bit_name(TIME), bit_name(ADDR), | |
1514 | bit_name(READ), bit_name(CALLCHAIN), bit_name(ID), bit_name(CPU), | |
1515 | bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW), | |
1516 | bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER), | |
84422592 | 1517 | bit_name(IDENTIFIER), bit_name(REGS_INTR), bit_name(DATA_SRC), |
3b0a5daa | 1518 | bit_name(WEIGHT), bit_name(PHYS_ADDR), |
2c5e8c52 PZ |
1519 | { .name = NULL, } |
1520 | }; | |
1521 | #undef bit_name | |
1522 | __p_bits(buf, size, value, bits); | |
1523 | } | |
1524 | ||
a213b92e ACM |
1525 | static void __p_branch_sample_type(char *buf, size_t size, u64 value) |
1526 | { | |
1527 | #define bit_name(n) { PERF_SAMPLE_BRANCH_##n, #n } | |
1528 | struct bit_names bits[] = { | |
1529 | bit_name(USER), bit_name(KERNEL), bit_name(HV), bit_name(ANY), | |
1530 | bit_name(ANY_CALL), bit_name(ANY_RETURN), bit_name(IND_CALL), | |
1531 | bit_name(ABORT_TX), bit_name(IN_TX), bit_name(NO_TX), | |
1532 | bit_name(COND), bit_name(CALL_STACK), bit_name(IND_JUMP), | |
1533 | bit_name(CALL), bit_name(NO_FLAGS), bit_name(NO_CYCLES), | |
1534 | { .name = NULL, } | |
1535 | }; | |
1536 | #undef bit_name | |
1537 | __p_bits(buf, size, value, bits); | |
1538 | } | |
1539 | ||
2c5e8c52 PZ |
1540 | static void __p_read_format(char *buf, size_t size, u64 value) |
1541 | { | |
1542 | #define bit_name(n) { PERF_FORMAT_##n, #n } | |
1543 | struct bit_names bits[] = { | |
1544 | bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING), | |
1545 | bit_name(ID), bit_name(GROUP), | |
1546 | { .name = NULL, } | |
1547 | }; | |
1548 | #undef bit_name | |
1549 | __p_bits(buf, size, value, bits); | |
1550 | } | |
1551 | ||
1552 | #define BUF_SIZE 1024 | |
1553 | ||
7310aed7 | 1554 | #define p_hex(val) snprintf(buf, BUF_SIZE, "%#"PRIx64, (uint64_t)(val)) |
2c5e8c52 PZ |
1555 | #define p_unsigned(val) snprintf(buf, BUF_SIZE, "%"PRIu64, (uint64_t)(val)) |
1556 | #define p_signed(val) snprintf(buf, BUF_SIZE, "%"PRId64, (int64_t)(val)) | |
1557 | #define p_sample_type(val) __p_sample_type(buf, BUF_SIZE, val) | |
a213b92e | 1558 | #define p_branch_sample_type(val) __p_branch_sample_type(buf, BUF_SIZE, val) |
2c5e8c52 PZ |
1559 | #define p_read_format(val) __p_read_format(buf, BUF_SIZE, val) |
1560 | ||
1561 | #define PRINT_ATTRn(_n, _f, _p) \ | |
1562 | do { \ | |
1563 | if (attr->_f) { \ | |
1564 | _p(attr->_f); \ | |
1565 | ret += attr__fprintf(fp, _n, buf, priv);\ | |
1566 | } \ | |
1567 | } while (0) | |
1568 | ||
1569 | #define PRINT_ATTRf(_f, _p) PRINT_ATTRn(#_f, _f, _p) | |
1570 | ||
1571 | int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr, | |
1572 | attr__fprintf_f attr__fprintf, void *priv) | |
1573 | { | |
1574 | char buf[BUF_SIZE]; | |
1575 | int ret = 0; | |
1576 | ||
1577 | PRINT_ATTRf(type, p_unsigned); | |
1578 | PRINT_ATTRf(size, p_unsigned); | |
1579 | PRINT_ATTRf(config, p_hex); | |
1580 | PRINT_ATTRn("{ sample_period, sample_freq }", sample_period, p_unsigned); | |
1581 | PRINT_ATTRf(sample_type, p_sample_type); | |
1582 | PRINT_ATTRf(read_format, p_read_format); | |
1583 | ||
1584 | PRINT_ATTRf(disabled, p_unsigned); | |
1585 | PRINT_ATTRf(inherit, p_unsigned); | |
1586 | PRINT_ATTRf(pinned, p_unsigned); | |
1587 | PRINT_ATTRf(exclusive, p_unsigned); | |
1588 | PRINT_ATTRf(exclude_user, p_unsigned); | |
1589 | PRINT_ATTRf(exclude_kernel, p_unsigned); | |
1590 | PRINT_ATTRf(exclude_hv, p_unsigned); | |
1591 | PRINT_ATTRf(exclude_idle, p_unsigned); | |
1592 | PRINT_ATTRf(mmap, p_unsigned); | |
1593 | PRINT_ATTRf(comm, p_unsigned); | |
1594 | PRINT_ATTRf(freq, p_unsigned); | |
1595 | PRINT_ATTRf(inherit_stat, p_unsigned); | |
1596 | PRINT_ATTRf(enable_on_exec, p_unsigned); | |
1597 | PRINT_ATTRf(task, p_unsigned); | |
1598 | PRINT_ATTRf(watermark, p_unsigned); | |
1599 | PRINT_ATTRf(precise_ip, p_unsigned); | |
1600 | PRINT_ATTRf(mmap_data, p_unsigned); | |
1601 | PRINT_ATTRf(sample_id_all, p_unsigned); | |
1602 | PRINT_ATTRf(exclude_host, p_unsigned); | |
1603 | PRINT_ATTRf(exclude_guest, p_unsigned); | |
1604 | PRINT_ATTRf(exclude_callchain_kernel, p_unsigned); | |
1605 | PRINT_ATTRf(exclude_callchain_user, p_unsigned); | |
1606 | PRINT_ATTRf(mmap2, p_unsigned); | |
1607 | PRINT_ATTRf(comm_exec, p_unsigned); | |
1608 | PRINT_ATTRf(use_clockid, p_unsigned); | |
0286039f | 1609 | PRINT_ATTRf(context_switch, p_unsigned); |
0a241ef4 | 1610 | PRINT_ATTRf(write_backward, p_unsigned); |
db9fc765 | 1611 | PRINT_ATTRf(namespaces, p_unsigned); |
2c5e8c52 PZ |
1612 | |
1613 | PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned); | |
1614 | PRINT_ATTRf(bp_type, p_unsigned); | |
1615 | PRINT_ATTRn("{ bp_addr, config1 }", bp_addr, p_hex); | |
1616 | PRINT_ATTRn("{ bp_len, config2 }", bp_len, p_hex); | |
a213b92e | 1617 | PRINT_ATTRf(branch_sample_type, p_branch_sample_type); |
2c5e8c52 PZ |
1618 | PRINT_ATTRf(sample_regs_user, p_hex); |
1619 | PRINT_ATTRf(sample_stack_user, p_unsigned); | |
1620 | PRINT_ATTRf(clockid, p_signed); | |
1621 | PRINT_ATTRf(sample_regs_intr, p_hex); | |
70d73de4 | 1622 | PRINT_ATTRf(aux_watermark, p_unsigned); |
792d48b4 | 1623 | PRINT_ATTRf(sample_max_stack, p_unsigned); |
e3e1a54f AH |
1624 | |
1625 | return ret; | |
1626 | } | |
1627 | ||
2c5e8c52 | 1628 | static int __open_attr__fprintf(FILE *fp, const char *name, const char *val, |
0353631a | 1629 | void *priv __maybe_unused) |
2c5e8c52 PZ |
1630 | { |
1631 | return fprintf(fp, " %-32s %s\n", name, val); | |
1632 | } | |
1633 | ||
ca800068 MZ |
1634 | static void perf_evsel__remove_fd(struct perf_evsel *pos, |
1635 | int nr_cpus, int nr_threads, | |
1636 | int thread_idx) | |
1637 | { | |
1638 | for (int cpu = 0; cpu < nr_cpus; cpu++) | |
1639 | for (int thread = thread_idx; thread < nr_threads - 1; thread++) | |
1640 | FD(pos, cpu, thread) = FD(pos, cpu, thread + 1); | |
1641 | } | |
1642 | ||
1643 | static int update_fds(struct perf_evsel *evsel, | |
1644 | int nr_cpus, int cpu_idx, | |
1645 | int nr_threads, int thread_idx) | |
1646 | { | |
1647 | struct perf_evsel *pos; | |
1648 | ||
1649 | if (cpu_idx >= nr_cpus || thread_idx >= nr_threads) | |
1650 | return -EINVAL; | |
1651 | ||
1652 | evlist__for_each_entry(evsel->evlist, pos) { | |
1653 | nr_cpus = pos != evsel ? nr_cpus : cpu_idx; | |
1654 | ||
1655 | perf_evsel__remove_fd(pos, nr_cpus, nr_threads, thread_idx); | |
1656 | ||
1657 | /* | |
1658 | * Since fds for next evsel has not been created, | |
1659 | * there is no need to iterate whole event list. | |
1660 | */ | |
1661 | if (pos == evsel) | |
1662 | break; | |
1663 | } | |
1664 | return 0; | |
1665 | } | |
1666 | ||
a359c17a | 1667 | static bool ignore_missing_thread(struct perf_evsel *evsel, |
ca800068 | 1668 | int nr_cpus, int cpu, |
a359c17a JO |
1669 | struct thread_map *threads, |
1670 | int thread, int err) | |
1671 | { | |
ca800068 MZ |
1672 | pid_t ignore_pid = thread_map__pid(threads, thread); |
1673 | ||
a359c17a JO |
1674 | if (!evsel->ignore_missing_thread) |
1675 | return false; | |
1676 | ||
1677 | /* The system wide setup does not work with threads. */ | |
1678 | if (evsel->system_wide) | |
1679 | return false; | |
1680 | ||
1681 | /* The -ESRCH is perf event syscall errno for pid's not found. */ | |
1682 | if (err != -ESRCH) | |
1683 | return false; | |
1684 | ||
1685 | /* If there's only one thread, let it fail. */ | |
1686 | if (threads->nr == 1) | |
1687 | return false; | |
1688 | ||
ca800068 MZ |
1689 | /* |
1690 | * We should remove fd for missing_thread first | |
1691 | * because thread_map__remove() will decrease threads->nr. | |
1692 | */ | |
1693 | if (update_fds(evsel, nr_cpus, cpu, threads->nr, thread)) | |
1694 | return false; | |
1695 | ||
a359c17a JO |
1696 | if (thread_map__remove(threads, thread)) |
1697 | return false; | |
1698 | ||
1699 | pr_warning("WARNING: Ignored open failure for pid %d\n", | |
ca800068 | 1700 | ignore_pid); |
a359c17a JO |
1701 | return true; |
1702 | } | |
1703 | ||
c24ae6d9 ACM |
1704 | int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, |
1705 | struct thread_map *threads) | |
48290609 | 1706 | { |
bf8e8f4b | 1707 | int cpu, thread, nthreads; |
57480d2c | 1708 | unsigned long flags = PERF_FLAG_FD_CLOEXEC; |
727ab04e | 1709 | int pid = -1, err; |
bec19672 | 1710 | enum { NO_CHANGE, SET_TO_MAX, INCREASED_MAX } set_rlimit = NO_CHANGE; |
48290609 | 1711 | |
32a951b4 ACM |
1712 | if (perf_missing_features.write_backward && evsel->attr.write_backward) |
1713 | return -EINVAL; | |
1714 | ||
c24ae6d9 ACM |
1715 | if (cpus == NULL) { |
1716 | static struct cpu_map *empty_cpu_map; | |
1717 | ||
1718 | if (empty_cpu_map == NULL) { | |
1719 | empty_cpu_map = cpu_map__dummy_new(); | |
1720 | if (empty_cpu_map == NULL) | |
1721 | return -ENOMEM; | |
1722 | } | |
1723 | ||
1724 | cpus = empty_cpu_map; | |
1725 | } | |
1726 | ||
1727 | if (threads == NULL) { | |
1728 | static struct thread_map *empty_thread_map; | |
1729 | ||
1730 | if (empty_thread_map == NULL) { | |
1731 | empty_thread_map = thread_map__new_by_tid(-1); | |
1732 | if (empty_thread_map == NULL) | |
1733 | return -ENOMEM; | |
1734 | } | |
1735 | ||
1736 | threads = empty_thread_map; | |
1737 | } | |
1738 | ||
bf8e8f4b AH |
1739 | if (evsel->system_wide) |
1740 | nthreads = 1; | |
1741 | else | |
1742 | nthreads = threads->nr; | |
1743 | ||
0252208e | 1744 | if (evsel->fd == NULL && |
bf8e8f4b | 1745 | perf_evsel__alloc_fd(evsel, cpus->nr, nthreads) < 0) |
727ab04e | 1746 | return -ENOMEM; |
4eed11d5 | 1747 | |
023695d9 | 1748 | if (evsel->cgrp) { |
57480d2c | 1749 | flags |= PERF_FLAG_PID_CGROUP; |
023695d9 SE |
1750 | pid = evsel->cgrp->fd; |
1751 | } | |
1752 | ||
594ac61a | 1753 | fallback_missing_features: |
814c8c38 PZ |
1754 | if (perf_missing_features.clockid_wrong) |
1755 | evsel->attr.clockid = CLOCK_MONOTONIC; /* should always work */ | |
1756 | if (perf_missing_features.clockid) { | |
1757 | evsel->attr.use_clockid = 0; | |
1758 | evsel->attr.clockid = 0; | |
1759 | } | |
57480d2c YD |
1760 | if (perf_missing_features.cloexec) |
1761 | flags &= ~(unsigned long)PERF_FLAG_FD_CLOEXEC; | |
5c5e854b SE |
1762 | if (perf_missing_features.mmap2) |
1763 | evsel->attr.mmap2 = 0; | |
594ac61a ACM |
1764 | if (perf_missing_features.exclude_guest) |
1765 | evsel->attr.exclude_guest = evsel->attr.exclude_host = 0; | |
bd0f8895 AK |
1766 | if (perf_missing_features.lbr_flags) |
1767 | evsel->attr.branch_sample_type &= ~(PERF_SAMPLE_BRANCH_NO_FLAGS | | |
1768 | PERF_SAMPLE_BRANCH_NO_CYCLES); | |
82bf311e JO |
1769 | if (perf_missing_features.group_read && evsel->attr.inherit) |
1770 | evsel->attr.read_format &= ~(PERF_FORMAT_GROUP|PERF_FORMAT_ID); | |
594ac61a ACM |
1771 | retry_sample_id: |
1772 | if (perf_missing_features.sample_id_all) | |
1773 | evsel->attr.sample_id_all = 0; | |
1774 | ||
2c5e8c52 PZ |
1775 | if (verbose >= 2) { |
1776 | fprintf(stderr, "%.60s\n", graph_dotted_line); | |
1777 | fprintf(stderr, "perf_event_attr:\n"); | |
1778 | perf_event_attr__fprintf(stderr, &evsel->attr, __open_attr__fprintf, NULL); | |
1779 | fprintf(stderr, "%.60s\n", graph_dotted_line); | |
1780 | } | |
e3e1a54f | 1781 | |
86bd5e86 | 1782 | for (cpu = 0; cpu < cpus->nr; cpu++) { |
9d04f178 | 1783 | |
bf8e8f4b | 1784 | for (thread = 0; thread < nthreads; thread++) { |
83c2e4f3 | 1785 | int fd, group_fd; |
023695d9 | 1786 | |
bf8e8f4b | 1787 | if (!evsel->cgrp && !evsel->system_wide) |
e13798c7 | 1788 | pid = thread_map__pid(threads, thread); |
023695d9 | 1789 | |
6a4bb04c | 1790 | group_fd = get_group_fd(evsel, cpu, thread); |
bec19672 | 1791 | retry_open: |
7b4b82bc | 1792 | pr_debug2("sys_perf_event_open: pid %d cpu %d group_fd %d flags %#lx", |
e3e1a54f AH |
1793 | pid, cpus->map[cpu], group_fd, flags); |
1794 | ||
10213e2f JO |
1795 | test_attr__ready(); |
1796 | ||
83c2e4f3 JO |
1797 | fd = sys_perf_event_open(&evsel->attr, pid, cpus->map[cpu], |
1798 | group_fd, flags); | |
1799 | ||
1800 | FD(evsel, cpu, thread) = fd; | |
1801 | ||
1802 | if (fd < 0) { | |
727ab04e | 1803 | err = -errno; |
a359c17a | 1804 | |
ca800068 | 1805 | if (ignore_missing_thread(evsel, cpus->nr, cpu, threads, thread, err)) { |
a359c17a JO |
1806 | /* |
1807 | * We just removed 1 thread, so take a step | |
1808 | * back on thread index and lower the upper | |
1809 | * nthreads limit. | |
1810 | */ | |
1811 | nthreads--; | |
1812 | thread--; | |
1813 | ||
1814 | /* ... and pretend like nothing have happened. */ | |
1815 | err = 0; | |
1816 | continue; | |
1817 | } | |
1818 | ||
7b4b82bc | 1819 | pr_debug2("\nsys_perf_event_open failed, error %d\n", |
f852fd62 | 1820 | err); |
594ac61a | 1821 | goto try_fallback; |
727ab04e | 1822 | } |
1f45b1d4 | 1823 | |
83c2e4f3 | 1824 | pr_debug2(" = %d\n", fd); |
7b4b82bc | 1825 | |
1f45b1d4 | 1826 | if (evsel->bpf_fd >= 0) { |
83c2e4f3 | 1827 | int evt_fd = fd; |
1f45b1d4 WN |
1828 | int bpf_fd = evsel->bpf_fd; |
1829 | ||
1830 | err = ioctl(evt_fd, | |
1831 | PERF_EVENT_IOC_SET_BPF, | |
1832 | bpf_fd); | |
1833 | if (err && errno != EEXIST) { | |
1834 | pr_err("failed to attach bpf fd %d: %s\n", | |
1835 | bpf_fd, strerror(errno)); | |
1836 | err = -EINVAL; | |
1837 | goto out_close; | |
1838 | } | |
1839 | } | |
1840 | ||
bec19672 | 1841 | set_rlimit = NO_CHANGE; |
814c8c38 PZ |
1842 | |
1843 | /* | |
1844 | * If we succeeded but had to kill clockid, fail and | |
1845 | * have perf_evsel__open_strerror() print us a nice | |
1846 | * error. | |
1847 | */ | |
1848 | if (perf_missing_features.clockid || | |
1849 | perf_missing_features.clockid_wrong) { | |
1850 | err = -EINVAL; | |
1851 | goto out_close; | |
1852 | } | |
0252208e | 1853 | } |
48290609 ACM |
1854 | } |
1855 | ||
1856 | return 0; | |
1857 | ||
594ac61a | 1858 | try_fallback: |
bec19672 AK |
1859 | /* |
1860 | * perf stat needs between 5 and 22 fds per CPU. When we run out | |
1861 | * of them try to increase the limits. | |
1862 | */ | |
1863 | if (err == -EMFILE && set_rlimit < INCREASED_MAX) { | |
1864 | struct rlimit l; | |
1865 | int old_errno = errno; | |
1866 | ||
1867 | if (getrlimit(RLIMIT_NOFILE, &l) == 0) { | |
1868 | if (set_rlimit == NO_CHANGE) | |
1869 | l.rlim_cur = l.rlim_max; | |
1870 | else { | |
1871 | l.rlim_cur = l.rlim_max + 1000; | |
1872 | l.rlim_max = l.rlim_cur; | |
1873 | } | |
1874 | if (setrlimit(RLIMIT_NOFILE, &l) == 0) { | |
1875 | set_rlimit++; | |
1876 | errno = old_errno; | |
1877 | goto retry_open; | |
1878 | } | |
1879 | } | |
1880 | errno = old_errno; | |
1881 | } | |
1882 | ||
594ac61a ACM |
1883 | if (err != -EINVAL || cpu > 0 || thread > 0) |
1884 | goto out_close; | |
1885 | ||
814c8c38 PZ |
1886 | /* |
1887 | * Must probe features in the order they were added to the | |
1888 | * perf_event_attr interface. | |
1889 | */ | |
7da36e94 ACM |
1890 | if (!perf_missing_features.write_backward && evsel->attr.write_backward) { |
1891 | perf_missing_features.write_backward = true; | |
2b04e0f8 | 1892 | pr_debug2("switching off write_backward\n"); |
32a951b4 | 1893 | goto out_close; |
7da36e94 | 1894 | } else if (!perf_missing_features.clockid_wrong && evsel->attr.use_clockid) { |
814c8c38 | 1895 | perf_missing_features.clockid_wrong = true; |
2b04e0f8 | 1896 | pr_debug2("switching off clockid\n"); |
814c8c38 PZ |
1897 | goto fallback_missing_features; |
1898 | } else if (!perf_missing_features.clockid && evsel->attr.use_clockid) { | |
1899 | perf_missing_features.clockid = true; | |
2b04e0f8 | 1900 | pr_debug2("switching off use_clockid\n"); |
814c8c38 PZ |
1901 | goto fallback_missing_features; |
1902 | } else if (!perf_missing_features.cloexec && (flags & PERF_FLAG_FD_CLOEXEC)) { | |
57480d2c | 1903 | perf_missing_features.cloexec = true; |
2b04e0f8 | 1904 | pr_debug2("switching off cloexec flag\n"); |
57480d2c YD |
1905 | goto fallback_missing_features; |
1906 | } else if (!perf_missing_features.mmap2 && evsel->attr.mmap2) { | |
5c5e854b | 1907 | perf_missing_features.mmap2 = true; |
2b04e0f8 | 1908 | pr_debug2("switching off mmap2\n"); |
5c5e854b SE |
1909 | goto fallback_missing_features; |
1910 | } else if (!perf_missing_features.exclude_guest && | |
1911 | (evsel->attr.exclude_guest || evsel->attr.exclude_host)) { | |
594ac61a | 1912 | perf_missing_features.exclude_guest = true; |
2b04e0f8 | 1913 | pr_debug2("switching off exclude_guest, exclude_host\n"); |
594ac61a ACM |
1914 | goto fallback_missing_features; |
1915 | } else if (!perf_missing_features.sample_id_all) { | |
1916 | perf_missing_features.sample_id_all = true; | |
2b04e0f8 | 1917 | pr_debug2("switching off sample_id_all\n"); |
594ac61a | 1918 | goto retry_sample_id; |
bd0f8895 AK |
1919 | } else if (!perf_missing_features.lbr_flags && |
1920 | (evsel->attr.branch_sample_type & | |
1921 | (PERF_SAMPLE_BRANCH_NO_CYCLES | | |
1922 | PERF_SAMPLE_BRANCH_NO_FLAGS))) { | |
1923 | perf_missing_features.lbr_flags = true; | |
2b04e0f8 | 1924 | pr_debug2("switching off branch sample type no (cycles/flags)\n"); |
bd0f8895 | 1925 | goto fallback_missing_features; |
82bf311e JO |
1926 | } else if (!perf_missing_features.group_read && |
1927 | evsel->attr.inherit && | |
121f325f KL |
1928 | (evsel->attr.read_format & PERF_FORMAT_GROUP) && |
1929 | perf_evsel__is_group_leader(evsel)) { | |
82bf311e JO |
1930 | perf_missing_features.group_read = true; |
1931 | pr_debug2("switching off group read\n"); | |
1932 | goto fallback_missing_features; | |
594ac61a | 1933 | } |
48290609 | 1934 | out_close: |
ab6c79b8 JY |
1935 | if (err) |
1936 | threads->err_thread = thread; | |
1937 | ||
0252208e ACM |
1938 | do { |
1939 | while (--thread >= 0) { | |
1940 | close(FD(evsel, cpu, thread)); | |
1941 | FD(evsel, cpu, thread) = -1; | |
1942 | } | |
bf8e8f4b | 1943 | thread = nthreads; |
0252208e | 1944 | } while (--cpu >= 0); |
727ab04e ACM |
1945 | return err; |
1946 | } | |
1947 | ||
475fb533 | 1948 | void perf_evsel__close(struct perf_evsel *evsel) |
727ab04e ACM |
1949 | { |
1950 | if (evsel->fd == NULL) | |
1951 | return; | |
1952 | ||
475fb533 | 1953 | perf_evsel__close_fd(evsel); |
727ab04e | 1954 | perf_evsel__free_fd(evsel); |
48290609 ACM |
1955 | } |
1956 | ||
f08199d3 | 1957 | int perf_evsel__open_per_cpu(struct perf_evsel *evsel, |
6a4bb04c | 1958 | struct cpu_map *cpus) |
48290609 | 1959 | { |
c24ae6d9 | 1960 | return perf_evsel__open(evsel, cpus, NULL); |
0252208e | 1961 | } |
48290609 | 1962 | |
f08199d3 | 1963 | int perf_evsel__open_per_thread(struct perf_evsel *evsel, |
6a4bb04c | 1964 | struct thread_map *threads) |
0252208e | 1965 | { |
c24ae6d9 | 1966 | return perf_evsel__open(evsel, NULL, threads); |
48290609 | 1967 | } |
70082dd9 | 1968 | |
0807d2d8 ACM |
1969 | static int perf_evsel__parse_id_sample(const struct perf_evsel *evsel, |
1970 | const union perf_event *event, | |
1971 | struct perf_sample *sample) | |
d0dd74e8 | 1972 | { |
0807d2d8 | 1973 | u64 type = evsel->attr.sample_type; |
d0dd74e8 | 1974 | const u64 *array = event->sample.array; |
0807d2d8 | 1975 | bool swapped = evsel->needs_swap; |
37073f9e | 1976 | union u64_swap u; |
d0dd74e8 ACM |
1977 | |
1978 | array += ((event->header.size - | |
1979 | sizeof(event->header)) / sizeof(u64)) - 1; | |
1980 | ||
75562573 AH |
1981 | if (type & PERF_SAMPLE_IDENTIFIER) { |
1982 | sample->id = *array; | |
1983 | array--; | |
1984 | } | |
1985 | ||
d0dd74e8 | 1986 | if (type & PERF_SAMPLE_CPU) { |
37073f9e JO |
1987 | u.val64 = *array; |
1988 | if (swapped) { | |
1989 | /* undo swap of u64, then swap on individual u32s */ | |
1990 | u.val64 = bswap_64(u.val64); | |
1991 | u.val32[0] = bswap_32(u.val32[0]); | |
1992 | } | |
1993 | ||
1994 | sample->cpu = u.val32[0]; | |
d0dd74e8 ACM |
1995 | array--; |
1996 | } | |
1997 | ||
1998 | if (type & PERF_SAMPLE_STREAM_ID) { | |
1999 | sample->stream_id = *array; | |
2000 | array--; | |
2001 | } | |
2002 | ||
2003 | if (type & PERF_SAMPLE_ID) { | |
2004 | sample->id = *array; | |
2005 | array--; | |
2006 | } | |
2007 | ||
2008 | if (type & PERF_SAMPLE_TIME) { | |
2009 | sample->time = *array; | |
2010 | array--; | |
2011 | } | |
2012 | ||
2013 | if (type & PERF_SAMPLE_TID) { | |
37073f9e JO |
2014 | u.val64 = *array; |
2015 | if (swapped) { | |
2016 | /* undo swap of u64, then swap on individual u32s */ | |
2017 | u.val64 = bswap_64(u.val64); | |
2018 | u.val32[0] = bswap_32(u.val32[0]); | |
2019 | u.val32[1] = bswap_32(u.val32[1]); | |
2020 | } | |
2021 | ||
2022 | sample->pid = u.val32[0]; | |
2023 | sample->tid = u.val32[1]; | |
dd44bc6b | 2024 | array--; |
d0dd74e8 ACM |
2025 | } |
2026 | ||
2027 | return 0; | |
2028 | } | |
2029 | ||
03b6ea9b AH |
2030 | static inline bool overflow(const void *endp, u16 max_size, const void *offset, |
2031 | u64 size) | |
98e1da90 | 2032 | { |
03b6ea9b AH |
2033 | return size > max_size || offset + size > endp; |
2034 | } | |
98e1da90 | 2035 | |
03b6ea9b AH |
2036 | #define OVERFLOW_CHECK(offset, size, max_size) \ |
2037 | do { \ | |
2038 | if (overflow(endp, (max_size), (offset), (size))) \ | |
2039 | return -EFAULT; \ | |
2040 | } while (0) | |
98e1da90 | 2041 | |
03b6ea9b AH |
2042 | #define OVERFLOW_CHECK_u64(offset) \ |
2043 | OVERFLOW_CHECK(offset, sizeof(u64), sizeof(u64)) | |
98e1da90 | 2044 | |
01468120 JO |
2045 | static int |
2046 | perf_event__check_size(union perf_event *event, unsigned int sample_size) | |
2047 | { | |
2048 | /* | |
2049 | * The evsel's sample_size is based on PERF_SAMPLE_MASK which includes | |
2050 | * up to PERF_SAMPLE_PERIOD. After that overflow() must be used to | |
2051 | * check the format does not go past the end of the event. | |
2052 | */ | |
2053 | if (sample_size + sizeof(event->header) > event->header.size) | |
2054 | return -EFAULT; | |
2055 | ||
2056 | return 0; | |
2057 | } | |
2058 | ||
a3f698fe | 2059 | int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, |
0807d2d8 | 2060 | struct perf_sample *data) |
d0dd74e8 | 2061 | { |
a3f698fe | 2062 | u64 type = evsel->attr.sample_type; |
0807d2d8 | 2063 | bool swapped = evsel->needs_swap; |
d0dd74e8 | 2064 | const u64 *array; |
03b6ea9b AH |
2065 | u16 max_size = event->header.size; |
2066 | const void *endp = (void *)event + max_size; | |
2067 | u64 sz; | |
d0dd74e8 | 2068 | |
936be503 DA |
2069 | /* |
2070 | * used for cross-endian analysis. See git commit 65014ab3 | |
2071 | * for why this goofiness is needed. | |
2072 | */ | |
6a11f92e | 2073 | union u64_swap u; |
936be503 | 2074 | |
f3bda2c9 | 2075 | memset(data, 0, sizeof(*data)); |
d0dd74e8 ACM |
2076 | data->cpu = data->pid = data->tid = -1; |
2077 | data->stream_id = data->id = data->time = -1ULL; | |
bc529086 | 2078 | data->period = evsel->attr.sample_period; |
473398a2 | 2079 | data->cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
28a0b398 | 2080 | data->misc = event->header.misc; |
3ad31d8a JO |
2081 | data->id = -1ULL; |
2082 | data->data_src = PERF_MEM_DATA_SRC_NONE; | |
d0dd74e8 ACM |
2083 | |
2084 | if (event->header.type != PERF_RECORD_SAMPLE) { | |
a3f698fe | 2085 | if (!evsel->attr.sample_id_all) |
d0dd74e8 | 2086 | return 0; |
0807d2d8 | 2087 | return perf_evsel__parse_id_sample(evsel, event, data); |
d0dd74e8 ACM |
2088 | } |
2089 | ||
2090 | array = event->sample.array; | |
2091 | ||
01468120 | 2092 | if (perf_event__check_size(event, evsel->sample_size)) |
a2854124 FW |
2093 | return -EFAULT; |
2094 | ||
75562573 AH |
2095 | if (type & PERF_SAMPLE_IDENTIFIER) { |
2096 | data->id = *array; | |
2097 | array++; | |
2098 | } | |
2099 | ||
d0dd74e8 | 2100 | if (type & PERF_SAMPLE_IP) { |
ef89325f | 2101 | data->ip = *array; |
d0dd74e8 ACM |
2102 | array++; |
2103 | } | |
2104 | ||
2105 | if (type & PERF_SAMPLE_TID) { | |
936be503 DA |
2106 | u.val64 = *array; |
2107 | if (swapped) { | |
2108 | /* undo swap of u64, then swap on individual u32s */ | |
2109 | u.val64 = bswap_64(u.val64); | |
2110 | u.val32[0] = bswap_32(u.val32[0]); | |
2111 | u.val32[1] = bswap_32(u.val32[1]); | |
2112 | } | |
2113 | ||
2114 | data->pid = u.val32[0]; | |
2115 | data->tid = u.val32[1]; | |
d0dd74e8 ACM |
2116 | array++; |
2117 | } | |
2118 | ||
2119 | if (type & PERF_SAMPLE_TIME) { | |
2120 | data->time = *array; | |
2121 | array++; | |
2122 | } | |
2123 | ||
2124 | if (type & PERF_SAMPLE_ADDR) { | |
2125 | data->addr = *array; | |
2126 | array++; | |
2127 | } | |
2128 | ||
d0dd74e8 ACM |
2129 | if (type & PERF_SAMPLE_ID) { |
2130 | data->id = *array; | |
2131 | array++; | |
2132 | } | |
2133 | ||
2134 | if (type & PERF_SAMPLE_STREAM_ID) { | |
2135 | data->stream_id = *array; | |
2136 | array++; | |
2137 | } | |
2138 | ||
2139 | if (type & PERF_SAMPLE_CPU) { | |
936be503 DA |
2140 | |
2141 | u.val64 = *array; | |
2142 | if (swapped) { | |
2143 | /* undo swap of u64, then swap on individual u32s */ | |
2144 | u.val64 = bswap_64(u.val64); | |
2145 | u.val32[0] = bswap_32(u.val32[0]); | |
2146 | } | |
2147 | ||
2148 | data->cpu = u.val32[0]; | |
d0dd74e8 ACM |
2149 | array++; |
2150 | } | |
2151 | ||
2152 | if (type & PERF_SAMPLE_PERIOD) { | |
2153 | data->period = *array; | |
2154 | array++; | |
2155 | } | |
2156 | ||
2157 | if (type & PERF_SAMPLE_READ) { | |
9ede473c JO |
2158 | u64 read_format = evsel->attr.read_format; |
2159 | ||
03b6ea9b | 2160 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
2161 | if (read_format & PERF_FORMAT_GROUP) |
2162 | data->read.group.nr = *array; | |
2163 | else | |
2164 | data->read.one.value = *array; | |
2165 | ||
2166 | array++; | |
2167 | ||
2168 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) { | |
03b6ea9b | 2169 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
2170 | data->read.time_enabled = *array; |
2171 | array++; | |
2172 | } | |
2173 | ||
2174 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) { | |
03b6ea9b | 2175 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
2176 | data->read.time_running = *array; |
2177 | array++; | |
2178 | } | |
2179 | ||
2180 | /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ | |
2181 | if (read_format & PERF_FORMAT_GROUP) { | |
03b6ea9b AH |
2182 | const u64 max_group_nr = UINT64_MAX / |
2183 | sizeof(struct sample_read_value); | |
2184 | ||
2185 | if (data->read.group.nr > max_group_nr) | |
2186 | return -EFAULT; | |
2187 | sz = data->read.group.nr * | |
2188 | sizeof(struct sample_read_value); | |
2189 | OVERFLOW_CHECK(array, sz, max_size); | |
2190 | data->read.group.values = | |
2191 | (struct sample_read_value *)array; | |
2192 | array = (void *)array + sz; | |
9ede473c | 2193 | } else { |
03b6ea9b | 2194 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
2195 | data->read.one.id = *array; |
2196 | array++; | |
2197 | } | |
d0dd74e8 ACM |
2198 | } |
2199 | ||
2200 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
03b6ea9b | 2201 | const u64 max_callchain_nr = UINT64_MAX / sizeof(u64); |
98e1da90 | 2202 | |
03b6ea9b AH |
2203 | OVERFLOW_CHECK_u64(array); |
2204 | data->callchain = (struct ip_callchain *)array++; | |
2205 | if (data->callchain->nr > max_callchain_nr) | |
98e1da90 | 2206 | return -EFAULT; |
03b6ea9b AH |
2207 | sz = data->callchain->nr * sizeof(u64); |
2208 | OVERFLOW_CHECK(array, sz, max_size); | |
2209 | array = (void *)array + sz; | |
d0dd74e8 ACM |
2210 | } |
2211 | ||
2212 | if (type & PERF_SAMPLE_RAW) { | |
03b6ea9b | 2213 | OVERFLOW_CHECK_u64(array); |
936be503 | 2214 | u.val64 = *array; |
f9d8adb3 JO |
2215 | |
2216 | /* | |
2217 | * Undo swap of u64, then swap on individual u32s, | |
2218 | * get the size of the raw area and undo all of the | |
2219 | * swap. The pevent interface handles endianity by | |
2220 | * itself. | |
2221 | */ | |
2222 | if (swapped) { | |
936be503 DA |
2223 | u.val64 = bswap_64(u.val64); |
2224 | u.val32[0] = bswap_32(u.val32[0]); | |
2225 | u.val32[1] = bswap_32(u.val32[1]); | |
2226 | } | |
936be503 | 2227 | data->raw_size = u.val32[0]; |
f9d8adb3 JO |
2228 | |
2229 | /* | |
2230 | * The raw data is aligned on 64bits including the | |
2231 | * u32 size, so it's safe to use mem_bswap_64. | |
2232 | */ | |
2233 | if (swapped) | |
2234 | mem_bswap_64((void *) array, data->raw_size); | |
2235 | ||
03b6ea9b | 2236 | array = (void *)array + sizeof(u32); |
98e1da90 | 2237 | |
03b6ea9b AH |
2238 | OVERFLOW_CHECK(array, data->raw_size, max_size); |
2239 | data->raw_data = (void *)array; | |
2240 | array = (void *)array + data->raw_size; | |
d0dd74e8 ACM |
2241 | } |
2242 | ||
b5387528 | 2243 | if (type & PERF_SAMPLE_BRANCH_STACK) { |
03b6ea9b AH |
2244 | const u64 max_branch_nr = UINT64_MAX / |
2245 | sizeof(struct branch_entry); | |
b5387528 | 2246 | |
03b6ea9b AH |
2247 | OVERFLOW_CHECK_u64(array); |
2248 | data->branch_stack = (struct branch_stack *)array++; | |
b5387528 | 2249 | |
03b6ea9b AH |
2250 | if (data->branch_stack->nr > max_branch_nr) |
2251 | return -EFAULT; | |
b5387528 | 2252 | sz = data->branch_stack->nr * sizeof(struct branch_entry); |
03b6ea9b AH |
2253 | OVERFLOW_CHECK(array, sz, max_size); |
2254 | array = (void *)array + sz; | |
b5387528 | 2255 | } |
0f6a3015 JO |
2256 | |
2257 | if (type & PERF_SAMPLE_REGS_USER) { | |
03b6ea9b | 2258 | OVERFLOW_CHECK_u64(array); |
5b95a4a3 AH |
2259 | data->user_regs.abi = *array; |
2260 | array++; | |
0f6a3015 | 2261 | |
5b95a4a3 | 2262 | if (data->user_regs.abi) { |
352ea45a | 2263 | u64 mask = evsel->attr.sample_regs_user; |
03b6ea9b | 2264 | |
352ea45a | 2265 | sz = hweight_long(mask) * sizeof(u64); |
03b6ea9b | 2266 | OVERFLOW_CHECK(array, sz, max_size); |
352ea45a | 2267 | data->user_regs.mask = mask; |
0f6a3015 | 2268 | data->user_regs.regs = (u64 *)array; |
03b6ea9b | 2269 | array = (void *)array + sz; |
0f6a3015 JO |
2270 | } |
2271 | } | |
2272 | ||
2273 | if (type & PERF_SAMPLE_STACK_USER) { | |
03b6ea9b AH |
2274 | OVERFLOW_CHECK_u64(array); |
2275 | sz = *array++; | |
0f6a3015 JO |
2276 | |
2277 | data->user_stack.offset = ((char *)(array - 1) | |
2278 | - (char *) event); | |
2279 | ||
03b6ea9b | 2280 | if (!sz) { |
0f6a3015 JO |
2281 | data->user_stack.size = 0; |
2282 | } else { | |
03b6ea9b | 2283 | OVERFLOW_CHECK(array, sz, max_size); |
0f6a3015 | 2284 | data->user_stack.data = (char *)array; |
03b6ea9b AH |
2285 | array = (void *)array + sz; |
2286 | OVERFLOW_CHECK_u64(array); | |
54bd2692 | 2287 | data->user_stack.size = *array++; |
a65cb4b9 JO |
2288 | if (WARN_ONCE(data->user_stack.size > sz, |
2289 | "user stack dump failure\n")) | |
2290 | return -EFAULT; | |
0f6a3015 JO |
2291 | } |
2292 | } | |
2293 | ||
05484298 | 2294 | if (type & PERF_SAMPLE_WEIGHT) { |
03b6ea9b | 2295 | OVERFLOW_CHECK_u64(array); |
05484298 AK |
2296 | data->weight = *array; |
2297 | array++; | |
2298 | } | |
2299 | ||
98a3b32c | 2300 | if (type & PERF_SAMPLE_DATA_SRC) { |
03b6ea9b | 2301 | OVERFLOW_CHECK_u64(array); |
98a3b32c SE |
2302 | data->data_src = *array; |
2303 | array++; | |
2304 | } | |
2305 | ||
475eeab9 | 2306 | if (type & PERF_SAMPLE_TRANSACTION) { |
87b95524 | 2307 | OVERFLOW_CHECK_u64(array); |
475eeab9 AK |
2308 | data->transaction = *array; |
2309 | array++; | |
2310 | } | |
2311 | ||
6a21c0b5 SE |
2312 | data->intr_regs.abi = PERF_SAMPLE_REGS_ABI_NONE; |
2313 | if (type & PERF_SAMPLE_REGS_INTR) { | |
2314 | OVERFLOW_CHECK_u64(array); | |
2315 | data->intr_regs.abi = *array; | |
2316 | array++; | |
2317 | ||
2318 | if (data->intr_regs.abi != PERF_SAMPLE_REGS_ABI_NONE) { | |
2319 | u64 mask = evsel->attr.sample_regs_intr; | |
2320 | ||
2321 | sz = hweight_long(mask) * sizeof(u64); | |
2322 | OVERFLOW_CHECK(array, sz, max_size); | |
2323 | data->intr_regs.mask = mask; | |
2324 | data->intr_regs.regs = (u64 *)array; | |
2325 | array = (void *)array + sz; | |
2326 | } | |
2327 | } | |
2328 | ||
3b0a5daa KL |
2329 | data->phys_addr = 0; |
2330 | if (type & PERF_SAMPLE_PHYS_ADDR) { | |
2331 | data->phys_addr = *array; | |
2332 | array++; | |
2333 | } | |
2334 | ||
d0dd74e8 ACM |
2335 | return 0; |
2336 | } | |
74eec26f | 2337 | |
01468120 JO |
2338 | int perf_evsel__parse_sample_timestamp(struct perf_evsel *evsel, |
2339 | union perf_event *event, | |
2340 | u64 *timestamp) | |
2341 | { | |
2342 | u64 type = evsel->attr.sample_type; | |
2343 | const u64 *array; | |
2344 | ||
2345 | if (!(type & PERF_SAMPLE_TIME)) | |
2346 | return -1; | |
2347 | ||
2348 | if (event->header.type != PERF_RECORD_SAMPLE) { | |
2349 | struct perf_sample data = { | |
2350 | .time = -1ULL, | |
2351 | }; | |
2352 | ||
2353 | if (!evsel->attr.sample_id_all) | |
2354 | return -1; | |
2355 | if (perf_evsel__parse_id_sample(evsel, event, &data)) | |
2356 | return -1; | |
2357 | ||
2358 | *timestamp = data.time; | |
2359 | return 0; | |
2360 | } | |
2361 | ||
2362 | array = event->sample.array; | |
2363 | ||
2364 | if (perf_event__check_size(event, evsel->sample_size)) | |
2365 | return -EFAULT; | |
2366 | ||
2367 | if (type & PERF_SAMPLE_IDENTIFIER) | |
2368 | array++; | |
2369 | ||
2370 | if (type & PERF_SAMPLE_IP) | |
2371 | array++; | |
2372 | ||
2373 | if (type & PERF_SAMPLE_TID) | |
2374 | array++; | |
2375 | ||
2376 | if (type & PERF_SAMPLE_TIME) | |
2377 | *timestamp = *array; | |
2378 | ||
2379 | return 0; | |
2380 | } | |
2381 | ||
b1cf6f65 | 2382 | size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type, |
352ea45a | 2383 | u64 read_format) |
b1cf6f65 AH |
2384 | { |
2385 | size_t sz, result = sizeof(struct sample_event); | |
2386 | ||
2387 | if (type & PERF_SAMPLE_IDENTIFIER) | |
2388 | result += sizeof(u64); | |
2389 | ||
2390 | if (type & PERF_SAMPLE_IP) | |
2391 | result += sizeof(u64); | |
2392 | ||
2393 | if (type & PERF_SAMPLE_TID) | |
2394 | result += sizeof(u64); | |
2395 | ||
2396 | if (type & PERF_SAMPLE_TIME) | |
2397 | result += sizeof(u64); | |
2398 | ||
2399 | if (type & PERF_SAMPLE_ADDR) | |
2400 | result += sizeof(u64); | |
2401 | ||
2402 | if (type & PERF_SAMPLE_ID) | |
2403 | result += sizeof(u64); | |
2404 | ||
2405 | if (type & PERF_SAMPLE_STREAM_ID) | |
2406 | result += sizeof(u64); | |
2407 | ||
2408 | if (type & PERF_SAMPLE_CPU) | |
2409 | result += sizeof(u64); | |
2410 | ||
2411 | if (type & PERF_SAMPLE_PERIOD) | |
2412 | result += sizeof(u64); | |
2413 | ||
2414 | if (type & PERF_SAMPLE_READ) { | |
2415 | result += sizeof(u64); | |
2416 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) | |
2417 | result += sizeof(u64); | |
2418 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) | |
2419 | result += sizeof(u64); | |
2420 | /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ | |
2421 | if (read_format & PERF_FORMAT_GROUP) { | |
2422 | sz = sample->read.group.nr * | |
2423 | sizeof(struct sample_read_value); | |
2424 | result += sz; | |
2425 | } else { | |
2426 | result += sizeof(u64); | |
2427 | } | |
2428 | } | |
2429 | ||
2430 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
2431 | sz = (sample->callchain->nr + 1) * sizeof(u64); | |
2432 | result += sz; | |
2433 | } | |
2434 | ||
2435 | if (type & PERF_SAMPLE_RAW) { | |
2436 | result += sizeof(u32); | |
2437 | result += sample->raw_size; | |
2438 | } | |
2439 | ||
2440 | if (type & PERF_SAMPLE_BRANCH_STACK) { | |
2441 | sz = sample->branch_stack->nr * sizeof(struct branch_entry); | |
2442 | sz += sizeof(u64); | |
2443 | result += sz; | |
2444 | } | |
2445 | ||
2446 | if (type & PERF_SAMPLE_REGS_USER) { | |
2447 | if (sample->user_regs.abi) { | |
2448 | result += sizeof(u64); | |
352ea45a | 2449 | sz = hweight_long(sample->user_regs.mask) * sizeof(u64); |
b1cf6f65 AH |
2450 | result += sz; |
2451 | } else { | |
2452 | result += sizeof(u64); | |
2453 | } | |
2454 | } | |
2455 | ||
2456 | if (type & PERF_SAMPLE_STACK_USER) { | |
2457 | sz = sample->user_stack.size; | |
2458 | result += sizeof(u64); | |
2459 | if (sz) { | |
2460 | result += sz; | |
2461 | result += sizeof(u64); | |
2462 | } | |
2463 | } | |
2464 | ||
2465 | if (type & PERF_SAMPLE_WEIGHT) | |
2466 | result += sizeof(u64); | |
2467 | ||
2468 | if (type & PERF_SAMPLE_DATA_SRC) | |
2469 | result += sizeof(u64); | |
2470 | ||
42d88910 AH |
2471 | if (type & PERF_SAMPLE_TRANSACTION) |
2472 | result += sizeof(u64); | |
2473 | ||
6a21c0b5 SE |
2474 | if (type & PERF_SAMPLE_REGS_INTR) { |
2475 | if (sample->intr_regs.abi) { | |
2476 | result += sizeof(u64); | |
2477 | sz = hweight_long(sample->intr_regs.mask) * sizeof(u64); | |
2478 | result += sz; | |
2479 | } else { | |
2480 | result += sizeof(u64); | |
2481 | } | |
2482 | } | |
2483 | ||
3b0a5daa KL |
2484 | if (type & PERF_SAMPLE_PHYS_ADDR) |
2485 | result += sizeof(u64); | |
2486 | ||
b1cf6f65 AH |
2487 | return result; |
2488 | } | |
2489 | ||
74eec26f | 2490 | int perf_event__synthesize_sample(union perf_event *event, u64 type, |
352ea45a | 2491 | u64 read_format, |
936f1f30 | 2492 | const struct perf_sample *sample) |
74eec26f AV |
2493 | { |
2494 | u64 *array; | |
d03f2170 | 2495 | size_t sz; |
74eec26f AV |
2496 | /* |
2497 | * used for cross-endian analysis. See git commit 65014ab3 | |
2498 | * for why this goofiness is needed. | |
2499 | */ | |
6a11f92e | 2500 | union u64_swap u; |
74eec26f AV |
2501 | |
2502 | array = event->sample.array; | |
2503 | ||
75562573 AH |
2504 | if (type & PERF_SAMPLE_IDENTIFIER) { |
2505 | *array = sample->id; | |
2506 | array++; | |
2507 | } | |
2508 | ||
74eec26f | 2509 | if (type & PERF_SAMPLE_IP) { |
ef89325f | 2510 | *array = sample->ip; |
74eec26f AV |
2511 | array++; |
2512 | } | |
2513 | ||
2514 | if (type & PERF_SAMPLE_TID) { | |
2515 | u.val32[0] = sample->pid; | |
2516 | u.val32[1] = sample->tid; | |
74eec26f AV |
2517 | *array = u.val64; |
2518 | array++; | |
2519 | } | |
2520 | ||
2521 | if (type & PERF_SAMPLE_TIME) { | |
2522 | *array = sample->time; | |
2523 | array++; | |
2524 | } | |
2525 | ||
2526 | if (type & PERF_SAMPLE_ADDR) { | |
2527 | *array = sample->addr; | |
2528 | array++; | |
2529 | } | |
2530 | ||
2531 | if (type & PERF_SAMPLE_ID) { | |
2532 | *array = sample->id; | |
2533 | array++; | |
2534 | } | |
2535 | ||
2536 | if (type & PERF_SAMPLE_STREAM_ID) { | |
2537 | *array = sample->stream_id; | |
2538 | array++; | |
2539 | } | |
2540 | ||
2541 | if (type & PERF_SAMPLE_CPU) { | |
2542 | u.val32[0] = sample->cpu; | |
59a87fda | 2543 | u.val32[1] = 0; |
74eec26f AV |
2544 | *array = u.val64; |
2545 | array++; | |
2546 | } | |
2547 | ||
2548 | if (type & PERF_SAMPLE_PERIOD) { | |
2549 | *array = sample->period; | |
2550 | array++; | |
2551 | } | |
2552 | ||
d03f2170 AH |
2553 | if (type & PERF_SAMPLE_READ) { |
2554 | if (read_format & PERF_FORMAT_GROUP) | |
2555 | *array = sample->read.group.nr; | |
2556 | else | |
2557 | *array = sample->read.one.value; | |
2558 | array++; | |
2559 | ||
2560 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) { | |
2561 | *array = sample->read.time_enabled; | |
2562 | array++; | |
2563 | } | |
2564 | ||
2565 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) { | |
2566 | *array = sample->read.time_running; | |
2567 | array++; | |
2568 | } | |
2569 | ||
2570 | /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ | |
2571 | if (read_format & PERF_FORMAT_GROUP) { | |
2572 | sz = sample->read.group.nr * | |
2573 | sizeof(struct sample_read_value); | |
2574 | memcpy(array, sample->read.group.values, sz); | |
2575 | array = (void *)array + sz; | |
2576 | } else { | |
2577 | *array = sample->read.one.id; | |
2578 | array++; | |
2579 | } | |
2580 | } | |
2581 | ||
2582 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
2583 | sz = (sample->callchain->nr + 1) * sizeof(u64); | |
2584 | memcpy(array, sample->callchain, sz); | |
2585 | array = (void *)array + sz; | |
2586 | } | |
2587 | ||
2588 | if (type & PERF_SAMPLE_RAW) { | |
2589 | u.val32[0] = sample->raw_size; | |
d03f2170 AH |
2590 | *array = u.val64; |
2591 | array = (void *)array + sizeof(u32); | |
2592 | ||
2593 | memcpy(array, sample->raw_data, sample->raw_size); | |
2594 | array = (void *)array + sample->raw_size; | |
2595 | } | |
2596 | ||
2597 | if (type & PERF_SAMPLE_BRANCH_STACK) { | |
2598 | sz = sample->branch_stack->nr * sizeof(struct branch_entry); | |
2599 | sz += sizeof(u64); | |
2600 | memcpy(array, sample->branch_stack, sz); | |
2601 | array = (void *)array + sz; | |
2602 | } | |
2603 | ||
2604 | if (type & PERF_SAMPLE_REGS_USER) { | |
2605 | if (sample->user_regs.abi) { | |
2606 | *array++ = sample->user_regs.abi; | |
352ea45a | 2607 | sz = hweight_long(sample->user_regs.mask) * sizeof(u64); |
d03f2170 AH |
2608 | memcpy(array, sample->user_regs.regs, sz); |
2609 | array = (void *)array + sz; | |
2610 | } else { | |
2611 | *array++ = 0; | |
2612 | } | |
2613 | } | |
2614 | ||
2615 | if (type & PERF_SAMPLE_STACK_USER) { | |
2616 | sz = sample->user_stack.size; | |
2617 | *array++ = sz; | |
2618 | if (sz) { | |
2619 | memcpy(array, sample->user_stack.data, sz); | |
2620 | array = (void *)array + sz; | |
2621 | *array++ = sz; | |
2622 | } | |
2623 | } | |
2624 | ||
2625 | if (type & PERF_SAMPLE_WEIGHT) { | |
2626 | *array = sample->weight; | |
2627 | array++; | |
2628 | } | |
2629 | ||
2630 | if (type & PERF_SAMPLE_DATA_SRC) { | |
2631 | *array = sample->data_src; | |
2632 | array++; | |
2633 | } | |
2634 | ||
42d88910 AH |
2635 | if (type & PERF_SAMPLE_TRANSACTION) { |
2636 | *array = sample->transaction; | |
2637 | array++; | |
2638 | } | |
2639 | ||
6a21c0b5 SE |
2640 | if (type & PERF_SAMPLE_REGS_INTR) { |
2641 | if (sample->intr_regs.abi) { | |
2642 | *array++ = sample->intr_regs.abi; | |
2643 | sz = hweight_long(sample->intr_regs.mask) * sizeof(u64); | |
2644 | memcpy(array, sample->intr_regs.regs, sz); | |
2645 | array = (void *)array + sz; | |
2646 | } else { | |
2647 | *array++ = 0; | |
2648 | } | |
2649 | } | |
2650 | ||
3b0a5daa KL |
2651 | if (type & PERF_SAMPLE_PHYS_ADDR) { |
2652 | *array = sample->phys_addr; | |
2653 | array++; | |
2654 | } | |
2655 | ||
74eec26f AV |
2656 | return 0; |
2657 | } | |
5555ded4 | 2658 | |
efd2b924 ACM |
2659 | struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name) |
2660 | { | |
2661 | return pevent_find_field(evsel->tp_format, name); | |
2662 | } | |
2663 | ||
5d2074ea | 2664 | void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample, |
5555ded4 ACM |
2665 | const char *name) |
2666 | { | |
efd2b924 | 2667 | struct format_field *field = perf_evsel__field(evsel, name); |
5555ded4 ACM |
2668 | int offset; |
2669 | ||
efd2b924 ACM |
2670 | if (!field) |
2671 | return NULL; | |
5555ded4 ACM |
2672 | |
2673 | offset = field->offset; | |
2674 | ||
2675 | if (field->flags & FIELD_IS_DYNAMIC) { | |
2676 | offset = *(int *)(sample->raw_data + field->offset); | |
2677 | offset &= 0xffff; | |
2678 | } | |
2679 | ||
2680 | return sample->raw_data + offset; | |
2681 | } | |
2682 | ||
90525176 ACM |
2683 | u64 format_field__intval(struct format_field *field, struct perf_sample *sample, |
2684 | bool needs_swap) | |
5555ded4 | 2685 | { |
e6b6f679 | 2686 | u64 value; |
90525176 | 2687 | void *ptr = sample->raw_data + field->offset; |
5555ded4 | 2688 | |
e6b6f679 ACM |
2689 | switch (field->size) { |
2690 | case 1: | |
2691 | return *(u8 *)ptr; | |
2692 | case 2: | |
2693 | value = *(u16 *)ptr; | |
2694 | break; | |
2695 | case 4: | |
2696 | value = *(u32 *)ptr; | |
2697 | break; | |
2698 | case 8: | |
e94eedab | 2699 | memcpy(&value, ptr, sizeof(u64)); |
e6b6f679 ACM |
2700 | break; |
2701 | default: | |
2702 | return 0; | |
2703 | } | |
2704 | ||
90525176 | 2705 | if (!needs_swap) |
e6b6f679 ACM |
2706 | return value; |
2707 | ||
2708 | switch (field->size) { | |
2709 | case 2: | |
2710 | return bswap_16(value); | |
2711 | case 4: | |
2712 | return bswap_32(value); | |
2713 | case 8: | |
2714 | return bswap_64(value); | |
2715 | default: | |
2716 | return 0; | |
2717 | } | |
2718 | ||
2719 | return 0; | |
5555ded4 | 2720 | } |
0698aedd | 2721 | |
90525176 ACM |
2722 | u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, |
2723 | const char *name) | |
2724 | { | |
2725 | struct format_field *field = perf_evsel__field(evsel, name); | |
2726 | ||
2727 | if (!field) | |
2728 | return 0; | |
2729 | ||
2730 | return field ? format_field__intval(field, sample, evsel->needs_swap) : 0; | |
2731 | } | |
2732 | ||
c0a54341 ACM |
2733 | bool perf_evsel__fallback(struct perf_evsel *evsel, int err, |
2734 | char *msg, size_t msgsize) | |
2735 | { | |
08094828 ACM |
2736 | int paranoid; |
2737 | ||
2b821cce | 2738 | if ((err == ENOENT || err == ENXIO || err == ENODEV) && |
c0a54341 ACM |
2739 | evsel->attr.type == PERF_TYPE_HARDWARE && |
2740 | evsel->attr.config == PERF_COUNT_HW_CPU_CYCLES) { | |
2741 | /* | |
2742 | * If it's cycles then fall back to hrtimer based | |
2743 | * cpu-clock-tick sw counter, which is always available even if | |
2744 | * no PMU support. | |
2745 | * | |
2746 | * PPC returns ENXIO until 2.6.37 (behavior changed with commit | |
2747 | * b0a873e). | |
2748 | */ | |
2749 | scnprintf(msg, msgsize, "%s", | |
2750 | "The cycles event is not supported, trying to fall back to cpu-clock-ticks"); | |
2751 | ||
2752 | evsel->attr.type = PERF_TYPE_SOFTWARE; | |
2753 | evsel->attr.config = PERF_COUNT_SW_CPU_CLOCK; | |
2754 | ||
04662523 | 2755 | zfree(&evsel->name); |
08094828 ACM |
2756 | return true; |
2757 | } else if (err == EACCES && !evsel->attr.exclude_kernel && | |
2758 | (paranoid = perf_event_paranoid()) > 1) { | |
2759 | const char *name = perf_evsel__name(evsel); | |
2760 | char *new_name; | |
129193bb | 2761 | const char *sep = ":"; |
08094828 | 2762 | |
129193bb JO |
2763 | /* Is there already the separator in the name. */ |
2764 | if (strchr(name, '/') || | |
2765 | strchr(name, ':')) | |
2766 | sep = ""; | |
2767 | ||
2768 | if (asprintf(&new_name, "%s%su", name, sep) < 0) | |
08094828 ACM |
2769 | return false; |
2770 | ||
2771 | if (evsel->name) | |
2772 | free(evsel->name); | |
2773 | evsel->name = new_name; | |
2774 | scnprintf(msg, msgsize, | |
2775 | "kernel.perf_event_paranoid=%d, trying to fall back to excluding kernel samples", paranoid); | |
2776 | evsel->attr.exclude_kernel = 1; | |
2777 | ||
c0a54341 ACM |
2778 | return true; |
2779 | } | |
2780 | ||
2781 | return false; | |
2782 | } | |
56e52e85 | 2783 | |
2157f6ee ACM |
2784 | static bool find_process(const char *name) |
2785 | { | |
2786 | size_t len = strlen(name); | |
2787 | DIR *dir; | |
2788 | struct dirent *d; | |
2789 | int ret = -1; | |
2790 | ||
2791 | dir = opendir(procfs__mountpoint()); | |
2792 | if (!dir) | |
2793 | return false; | |
2794 | ||
2795 | /* Walk through the directory. */ | |
2796 | while (ret && (d = readdir(dir)) != NULL) { | |
2797 | char path[PATH_MAX]; | |
2798 | char *data; | |
2799 | size_t size; | |
2800 | ||
2801 | if ((d->d_type != DT_DIR) || | |
2802 | !strcmp(".", d->d_name) || | |
2803 | !strcmp("..", d->d_name)) | |
2804 | continue; | |
2805 | ||
2806 | scnprintf(path, sizeof(path), "%s/%s/comm", | |
2807 | procfs__mountpoint(), d->d_name); | |
2808 | ||
2809 | if (filename__read_str(path, &data, &size)) | |
2810 | continue; | |
2811 | ||
2812 | ret = strncmp(name, data, len); | |
2813 | free(data); | |
2814 | } | |
2815 | ||
2816 | closedir(dir); | |
2817 | return ret ? false : true; | |
2818 | } | |
2819 | ||
602ad878 | 2820 | int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, |
56e52e85 ACM |
2821 | int err, char *msg, size_t size) |
2822 | { | |
6e81c74c | 2823 | char sbuf[STRERR_BUFSIZE]; |
32ccb130 | 2824 | int printed = 0; |
6e81c74c | 2825 | |
56e52e85 ACM |
2826 | switch (err) { |
2827 | case EPERM: | |
2828 | case EACCES: | |
32ccb130 JY |
2829 | if (err == EPERM) |
2830 | printed = scnprintf(msg, size, | |
2831 | "No permission to enable %s event.\n\n", | |
2832 | perf_evsel__name(evsel)); | |
2833 | ||
2834 | return scnprintf(msg + printed, size - printed, | |
3379e0c3 BH |
2835 | "You may not have permission to collect %sstats.\n\n" |
2836 | "Consider tweaking /proc/sys/kernel/perf_event_paranoid,\n" | |
2837 | "which controls use of the performance events system by\n" | |
2838 | "unprivileged users (without CAP_SYS_ADMIN).\n\n" | |
7d173913 | 2839 | "The current value is %d:\n\n" |
3379e0c3 | 2840 | " -1: Allow use of (almost) all events by all users\n" |
ac0bb6b7 KK |
2841 | " Ignore mlock limit after perf_event_mlock_kb without CAP_IPC_LOCK\n" |
2842 | ">= 0: Disallow ftrace function tracepoint by users without CAP_SYS_ADMIN\n" | |
2843 | " Disallow raw tracepoint access by users without CAP_SYS_ADMIN\n" | |
3379e0c3 | 2844 | ">= 1: Disallow CPU event access by users without CAP_SYS_ADMIN\n" |
d6195a6a ACM |
2845 | ">= 2: Disallow kernel profiling by users without CAP_SYS_ADMIN\n\n" |
2846 | "To make this setting permanent, edit /etc/sysctl.conf too, e.g.:\n\n" | |
2847 | " kernel.perf_event_paranoid = -1\n" , | |
7d173913 ACM |
2848 | target->system_wide ? "system-wide " : "", |
2849 | perf_event_paranoid()); | |
56e52e85 ACM |
2850 | case ENOENT: |
2851 | return scnprintf(msg, size, "The %s event is not supported.", | |
2852 | perf_evsel__name(evsel)); | |
2853 | case EMFILE: | |
2854 | return scnprintf(msg, size, "%s", | |
2855 | "Too many events are opened.\n" | |
18ffdfe8 JO |
2856 | "Probably the maximum number of open file descriptors has been reached.\n" |
2857 | "Hint: Try again after reducing the number of events.\n" | |
2858 | "Hint: Try increasing the limit with 'ulimit -n <limit>'"); | |
de46d526 ACM |
2859 | case ENOMEM: |
2860 | if ((evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) != 0 && | |
2861 | access("/proc/sys/kernel/perf_event_max_stack", F_OK) == 0) | |
2862 | return scnprintf(msg, size, | |
2863 | "Not enough memory to setup event with callchain.\n" | |
2864 | "Hint: Try tweaking /proc/sys/kernel/perf_event_max_stack\n" | |
2865 | "Hint: Current value: %d", sysctl_perf_event_max_stack); | |
2866 | break; | |
56e52e85 ACM |
2867 | case ENODEV: |
2868 | if (target->cpu_list) | |
2869 | return scnprintf(msg, size, "%s", | |
81d64f46 | 2870 | "No such device - did you specify an out-of-range profile CPU?"); |
56e52e85 ACM |
2871 | break; |
2872 | case EOPNOTSUPP: | |
dc89e75a | 2873 | if (evsel->attr.sample_period != 0) |
114bc191 KP |
2874 | return scnprintf(msg, size, |
2875 | "%s: PMU Hardware doesn't support sampling/overflow-interrupts. Try 'perf stat'", | |
2876 | perf_evsel__name(evsel)); | |
56e52e85 ACM |
2877 | if (evsel->attr.precise_ip) |
2878 | return scnprintf(msg, size, "%s", | |
2879 | "\'precise\' request may not be supported. Try removing 'p' modifier."); | |
2880 | #if defined(__i386__) || defined(__x86_64__) | |
2881 | if (evsel->attr.type == PERF_TYPE_HARDWARE) | |
2882 | return scnprintf(msg, size, "%s", | |
ccbb6afe | 2883 | "No hardware sampling interrupt available.\n"); |
56e52e85 ACM |
2884 | #endif |
2885 | break; | |
63914aca JO |
2886 | case EBUSY: |
2887 | if (find_process("oprofiled")) | |
2888 | return scnprintf(msg, size, | |
2889 | "The PMU counters are busy/taken by another profiler.\n" | |
2890 | "We found oprofile daemon running, please stop it and try again."); | |
2891 | break; | |
814c8c38 | 2892 | case EINVAL: |
32a951b4 | 2893 | if (evsel->attr.write_backward && perf_missing_features.write_backward) |
7da36e94 | 2894 | return scnprintf(msg, size, "Reading from overwrite event is not supported by this kernel."); |
814c8c38 PZ |
2895 | if (perf_missing_features.clockid) |
2896 | return scnprintf(msg, size, "clockid feature not supported."); | |
2897 | if (perf_missing_features.clockid_wrong) | |
2898 | return scnprintf(msg, size, "wrong clockid (%d).", clockid); | |
2899 | break; | |
56e52e85 ACM |
2900 | default: |
2901 | break; | |
2902 | } | |
2903 | ||
2904 | return scnprintf(msg, size, | |
6e81c74c | 2905 | "The sys_perf_event_open() syscall returned with %d (%s) for event (%s).\n" |
ec394845 | 2906 | "/bin/dmesg | grep -i perf may provide additional information.\n", |
c8b5f2c9 | 2907 | err, str_error_r(err, sbuf, sizeof(sbuf)), |
6e81c74c | 2908 | perf_evsel__name(evsel)); |
56e52e85 | 2909 | } |
f4e47f9f | 2910 | |
5449f13c | 2911 | struct perf_env *perf_evsel__env(struct perf_evsel *evsel) |
69fb09f6 | 2912 | { |
5449f13c ACM |
2913 | if (evsel && evsel->evlist) |
2914 | return evsel->evlist->env; | |
69fb09f6 JY |
2915 | return NULL; |
2916 | } |