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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" |
f69d9d78 | 39 | #include "memswap.h" |
ac12f676 | 40 | #include "util/parse-branch-options.h" |
69aad6f1 | 41 | |
3d689ed6 ACM |
42 | #include "sane_ctype.h" |
43 | ||
594ac61a ACM |
44 | static struct { |
45 | bool sample_id_all; | |
46 | bool exclude_guest; | |
5c5e854b | 47 | bool mmap2; |
57480d2c | 48 | bool cloexec; |
814c8c38 PZ |
49 | bool clockid; |
50 | bool clockid_wrong; | |
bd0f8895 | 51 | bool lbr_flags; |
b90dc17a | 52 | bool write_backward; |
82bf311e | 53 | bool group_read; |
594ac61a ACM |
54 | } perf_missing_features; |
55 | ||
814c8c38 PZ |
56 | static clockid_t clockid; |
57 | ||
ce8ccff5 ACM |
58 | static int perf_evsel__no_extra_init(struct perf_evsel *evsel __maybe_unused) |
59 | { | |
60 | return 0; | |
61 | } | |
62 | ||
10213e2f JO |
63 | void __weak test_attr__ready(void) { } |
64 | ||
ce8ccff5 ACM |
65 | static void perf_evsel__no_extra_fini(struct perf_evsel *evsel __maybe_unused) |
66 | { | |
67 | } | |
68 | ||
69 | static struct { | |
70 | size_t size; | |
71 | int (*init)(struct perf_evsel *evsel); | |
72 | void (*fini)(struct perf_evsel *evsel); | |
73 | } perf_evsel__object = { | |
74 | .size = sizeof(struct perf_evsel), | |
75 | .init = perf_evsel__no_extra_init, | |
76 | .fini = perf_evsel__no_extra_fini, | |
77 | }; | |
78 | ||
79 | int perf_evsel__object_config(size_t object_size, | |
80 | int (*init)(struct perf_evsel *evsel), | |
81 | void (*fini)(struct perf_evsel *evsel)) | |
82 | { | |
83 | ||
84 | if (object_size == 0) | |
85 | goto set_methods; | |
86 | ||
87 | if (perf_evsel__object.size > object_size) | |
88 | return -EINVAL; | |
89 | ||
90 | perf_evsel__object.size = object_size; | |
91 | ||
92 | set_methods: | |
93 | if (init != NULL) | |
94 | perf_evsel__object.init = init; | |
95 | ||
96 | if (fini != NULL) | |
97 | perf_evsel__object.fini = fini; | |
98 | ||
99 | return 0; | |
100 | } | |
101 | ||
c52b12ed ACM |
102 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
103 | ||
75562573 | 104 | int __perf_evsel__sample_size(u64 sample_type) |
c2a70653 ACM |
105 | { |
106 | u64 mask = sample_type & PERF_SAMPLE_MASK; | |
107 | int size = 0; | |
108 | int i; | |
109 | ||
110 | for (i = 0; i < 64; i++) { | |
111 | if (mask & (1ULL << i)) | |
112 | size++; | |
113 | } | |
114 | ||
115 | size *= sizeof(u64); | |
116 | ||
117 | return size; | |
118 | } | |
119 | ||
75562573 AH |
120 | /** |
121 | * __perf_evsel__calc_id_pos - calculate id_pos. | |
122 | * @sample_type: sample type | |
123 | * | |
124 | * This function returns the position of the event id (PERF_SAMPLE_ID or | |
125 | * PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of struct | |
126 | * sample_event. | |
127 | */ | |
128 | static int __perf_evsel__calc_id_pos(u64 sample_type) | |
129 | { | |
130 | int idx = 0; | |
131 | ||
132 | if (sample_type & PERF_SAMPLE_IDENTIFIER) | |
133 | return 0; | |
134 | ||
135 | if (!(sample_type & PERF_SAMPLE_ID)) | |
136 | return -1; | |
137 | ||
138 | if (sample_type & PERF_SAMPLE_IP) | |
139 | idx += 1; | |
140 | ||
141 | if (sample_type & PERF_SAMPLE_TID) | |
142 | idx += 1; | |
143 | ||
144 | if (sample_type & PERF_SAMPLE_TIME) | |
145 | idx += 1; | |
146 | ||
147 | if (sample_type & PERF_SAMPLE_ADDR) | |
148 | idx += 1; | |
149 | ||
150 | return idx; | |
151 | } | |
152 | ||
153 | /** | |
154 | * __perf_evsel__calc_is_pos - calculate is_pos. | |
155 | * @sample_type: sample type | |
156 | * | |
157 | * This function returns the position (counting backwards) of the event id | |
158 | * (PERF_SAMPLE_ID or PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if | |
159 | * sample_id_all is used there is an id sample appended to non-sample events. | |
160 | */ | |
161 | static int __perf_evsel__calc_is_pos(u64 sample_type) | |
162 | { | |
163 | int idx = 1; | |
164 | ||
165 | if (sample_type & PERF_SAMPLE_IDENTIFIER) | |
166 | return 1; | |
167 | ||
168 | if (!(sample_type & PERF_SAMPLE_ID)) | |
169 | return -1; | |
170 | ||
171 | if (sample_type & PERF_SAMPLE_CPU) | |
172 | idx += 1; | |
173 | ||
174 | if (sample_type & PERF_SAMPLE_STREAM_ID) | |
175 | idx += 1; | |
176 | ||
177 | return idx; | |
178 | } | |
179 | ||
180 | void perf_evsel__calc_id_pos(struct perf_evsel *evsel) | |
181 | { | |
182 | evsel->id_pos = __perf_evsel__calc_id_pos(evsel->attr.sample_type); | |
183 | evsel->is_pos = __perf_evsel__calc_is_pos(evsel->attr.sample_type); | |
184 | } | |
185 | ||
7be5ebe8 ACM |
186 | void __perf_evsel__set_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 | ||
196 | void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel, | |
197 | enum perf_event_sample_format bit) | |
198 | { | |
199 | if (evsel->attr.sample_type & bit) { | |
200 | evsel->attr.sample_type &= ~bit; | |
201 | evsel->sample_size -= sizeof(u64); | |
75562573 | 202 | perf_evsel__calc_id_pos(evsel); |
7be5ebe8 ACM |
203 | } |
204 | } | |
205 | ||
75562573 AH |
206 | void perf_evsel__set_sample_id(struct perf_evsel *evsel, |
207 | bool can_sample_identifier) | |
7a5a5ca5 | 208 | { |
75562573 AH |
209 | if (can_sample_identifier) { |
210 | perf_evsel__reset_sample_bit(evsel, ID); | |
211 | perf_evsel__set_sample_bit(evsel, IDENTIFIER); | |
212 | } else { | |
213 | perf_evsel__set_sample_bit(evsel, ID); | |
214 | } | |
7a5a5ca5 ACM |
215 | evsel->attr.read_format |= PERF_FORMAT_ID; |
216 | } | |
217 | ||
5496bc0c ACM |
218 | /** |
219 | * perf_evsel__is_function_event - Return whether given evsel is a function | |
220 | * trace event | |
221 | * | |
222 | * @evsel - evsel selector to be tested | |
223 | * | |
224 | * Return %true if event is function trace event | |
225 | */ | |
226 | bool perf_evsel__is_function_event(struct perf_evsel *evsel) | |
227 | { | |
228 | #define FUNCTION_EVENT "ftrace:function" | |
229 | ||
230 | return evsel->name && | |
231 | !strncmp(FUNCTION_EVENT, evsel->name, sizeof(FUNCTION_EVENT)); | |
232 | ||
233 | #undef FUNCTION_EVENT | |
234 | } | |
235 | ||
ef1d1af2 ACM |
236 | void perf_evsel__init(struct perf_evsel *evsel, |
237 | struct perf_event_attr *attr, int idx) | |
238 | { | |
239 | evsel->idx = idx; | |
60b0896c | 240 | evsel->tracking = !idx; |
ef1d1af2 | 241 | evsel->attr = *attr; |
2cfda562 | 242 | evsel->leader = evsel; |
410136f5 SE |
243 | evsel->unit = ""; |
244 | evsel->scale = 1.0; | |
d49e4695 | 245 | evsel->evlist = NULL; |
1f45b1d4 | 246 | evsel->bpf_fd = -1; |
ef1d1af2 | 247 | INIT_LIST_HEAD(&evsel->node); |
930a2e29 | 248 | INIT_LIST_HEAD(&evsel->config_terms); |
ce8ccff5 | 249 | perf_evsel__object.init(evsel); |
bde09467 | 250 | evsel->sample_size = __perf_evsel__sample_size(attr->sample_type); |
75562573 | 251 | perf_evsel__calc_id_pos(evsel); |
15bfd2cc | 252 | evsel->cmdline_group_boundary = false; |
37932c18 | 253 | evsel->metric_expr = NULL; |
96284814 | 254 | evsel->metric_name = NULL; |
37932c18 AK |
255 | evsel->metric_events = NULL; |
256 | evsel->collect_stat = false; | |
ef1d1af2 ACM |
257 | } |
258 | ||
ef503831 | 259 | struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx) |
69aad6f1 | 260 | { |
ce8ccff5 | 261 | struct perf_evsel *evsel = zalloc(perf_evsel__object.size); |
69aad6f1 | 262 | |
ef1d1af2 ACM |
263 | if (evsel != NULL) |
264 | perf_evsel__init(evsel, attr, idx); | |
69aad6f1 | 265 | |
03e0a7df | 266 | if (perf_evsel__is_bpf_output(evsel)) { |
d37ba880 WN |
267 | evsel->attr.sample_type |= (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | |
268 | PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), | |
03e0a7df WN |
269 | evsel->attr.sample_period = 1; |
270 | } | |
271 | ||
69aad6f1 ACM |
272 | return evsel; |
273 | } | |
274 | ||
f1e52f14 ACM |
275 | static bool perf_event_can_profile_kernel(void) |
276 | { | |
277 | return geteuid() == 0 || perf_event_paranoid() == -1; | |
278 | } | |
279 | ||
30269dc1 | 280 | struct perf_evsel *perf_evsel__new_cycles(bool precise) |
7c48dcfd ACM |
281 | { |
282 | struct perf_event_attr attr = { | |
283 | .type = PERF_TYPE_HARDWARE, | |
284 | .config = PERF_COUNT_HW_CPU_CYCLES, | |
f1e52f14 | 285 | .exclude_kernel = !perf_event_can_profile_kernel(), |
7c48dcfd ACM |
286 | }; |
287 | struct perf_evsel *evsel; | |
288 | ||
289 | event_attr_init(&attr); | |
30269dc1 ACM |
290 | |
291 | if (!precise) | |
292 | goto new_event; | |
7a1ac110 ACM |
293 | /* |
294 | * Unnamed union member, not supported as struct member named | |
295 | * initializer in older compilers such as gcc 4.4.7 | |
296 | * | |
297 | * Just for probing the precise_ip: | |
298 | */ | |
299 | attr.sample_period = 1; | |
7c48dcfd ACM |
300 | |
301 | perf_event_attr__set_max_precise_ip(&attr); | |
7a1ac110 ACM |
302 | /* |
303 | * Now let the usual logic to set up the perf_event_attr defaults | |
304 | * to kick in when we return and before perf_evsel__open() is called. | |
305 | */ | |
306 | attr.sample_period = 0; | |
30269dc1 | 307 | new_event: |
7c48dcfd ACM |
308 | evsel = perf_evsel__new(&attr); |
309 | if (evsel == NULL) | |
310 | goto out; | |
311 | ||
312 | /* use asprintf() because free(evsel) assumes name is allocated */ | |
ede5626d ACM |
313 | if (asprintf(&evsel->name, "cycles%s%s%.*s", |
314 | (attr.precise_ip || attr.exclude_kernel) ? ":" : "", | |
315 | attr.exclude_kernel ? "u" : "", | |
316 | attr.precise_ip ? attr.precise_ip + 1 : 0, "ppp") < 0) | |
7c48dcfd ACM |
317 | goto error_free; |
318 | out: | |
319 | return evsel; | |
320 | error_free: | |
321 | perf_evsel__delete(evsel); | |
322 | evsel = NULL; | |
323 | goto out; | |
324 | } | |
325 | ||
8dd2a131 JO |
326 | /* |
327 | * Returns pointer with encoded error via <linux/err.h> interface. | |
328 | */ | |
ef503831 | 329 | struct perf_evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx) |
efd2b924 | 330 | { |
ce8ccff5 | 331 | struct perf_evsel *evsel = zalloc(perf_evsel__object.size); |
8dd2a131 | 332 | int err = -ENOMEM; |
efd2b924 | 333 | |
8dd2a131 JO |
334 | if (evsel == NULL) { |
335 | goto out_err; | |
336 | } else { | |
efd2b924 | 337 | struct perf_event_attr attr = { |
0b80f8b3 ACM |
338 | .type = PERF_TYPE_TRACEPOINT, |
339 | .sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | | |
340 | PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), | |
efd2b924 ACM |
341 | }; |
342 | ||
e48ffe2b ACM |
343 | if (asprintf(&evsel->name, "%s:%s", sys, name) < 0) |
344 | goto out_free; | |
345 | ||
97978b3e | 346 | evsel->tp_format = trace_event__tp_format(sys, name); |
8dd2a131 JO |
347 | if (IS_ERR(evsel->tp_format)) { |
348 | err = PTR_ERR(evsel->tp_format); | |
efd2b924 | 349 | goto out_free; |
8dd2a131 | 350 | } |
efd2b924 | 351 | |
0b80f8b3 | 352 | event_attr_init(&attr); |
efd2b924 | 353 | attr.config = evsel->tp_format->id; |
0b80f8b3 | 354 | attr.sample_period = 1; |
efd2b924 | 355 | perf_evsel__init(evsel, &attr, idx); |
efd2b924 ACM |
356 | } |
357 | ||
358 | return evsel; | |
359 | ||
360 | out_free: | |
74cf249d | 361 | zfree(&evsel->name); |
efd2b924 | 362 | free(evsel); |
8dd2a131 JO |
363 | out_err: |
364 | return ERR_PTR(err); | |
efd2b924 ACM |
365 | } |
366 | ||
8ad7013b | 367 | const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = { |
c410431c ACM |
368 | "cycles", |
369 | "instructions", | |
370 | "cache-references", | |
371 | "cache-misses", | |
372 | "branches", | |
373 | "branch-misses", | |
374 | "bus-cycles", | |
375 | "stalled-cycles-frontend", | |
376 | "stalled-cycles-backend", | |
377 | "ref-cycles", | |
378 | }; | |
379 | ||
dd4f5223 | 380 | static const char *__perf_evsel__hw_name(u64 config) |
c410431c ACM |
381 | { |
382 | if (config < PERF_COUNT_HW_MAX && perf_evsel__hw_names[config]) | |
383 | return perf_evsel__hw_names[config]; | |
384 | ||
385 | return "unknown-hardware"; | |
386 | } | |
387 | ||
27f18617 | 388 | static int perf_evsel__add_modifiers(struct perf_evsel *evsel, char *bf, size_t size) |
c410431c | 389 | { |
27f18617 | 390 | int colon = 0, r = 0; |
c410431c | 391 | struct perf_event_attr *attr = &evsel->attr; |
c410431c ACM |
392 | bool exclude_guest_default = false; |
393 | ||
394 | #define MOD_PRINT(context, mod) do { \ | |
395 | if (!attr->exclude_##context) { \ | |
27f18617 | 396 | if (!colon) colon = ++r; \ |
c410431c ACM |
397 | r += scnprintf(bf + r, size - r, "%c", mod); \ |
398 | } } while(0) | |
399 | ||
400 | if (attr->exclude_kernel || attr->exclude_user || attr->exclude_hv) { | |
401 | MOD_PRINT(kernel, 'k'); | |
402 | MOD_PRINT(user, 'u'); | |
403 | MOD_PRINT(hv, 'h'); | |
404 | exclude_guest_default = true; | |
405 | } | |
406 | ||
407 | if (attr->precise_ip) { | |
408 | if (!colon) | |
27f18617 | 409 | colon = ++r; |
c410431c ACM |
410 | r += scnprintf(bf + r, size - r, "%.*s", attr->precise_ip, "ppp"); |
411 | exclude_guest_default = true; | |
412 | } | |
413 | ||
414 | if (attr->exclude_host || attr->exclude_guest == exclude_guest_default) { | |
415 | MOD_PRINT(host, 'H'); | |
416 | MOD_PRINT(guest, 'G'); | |
417 | } | |
418 | #undef MOD_PRINT | |
419 | if (colon) | |
27f18617 | 420 | bf[colon - 1] = ':'; |
c410431c ACM |
421 | return r; |
422 | } | |
423 | ||
27f18617 ACM |
424 | static int perf_evsel__hw_name(struct perf_evsel *evsel, char *bf, size_t size) |
425 | { | |
426 | int r = scnprintf(bf, size, "%s", __perf_evsel__hw_name(evsel->attr.config)); | |
427 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
428 | } | |
429 | ||
8ad7013b | 430 | const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = { |
335c2f5d ACM |
431 | "cpu-clock", |
432 | "task-clock", | |
433 | "page-faults", | |
434 | "context-switches", | |
8ad7013b | 435 | "cpu-migrations", |
335c2f5d ACM |
436 | "minor-faults", |
437 | "major-faults", | |
438 | "alignment-faults", | |
439 | "emulation-faults", | |
d22d1a2a | 440 | "dummy", |
335c2f5d ACM |
441 | }; |
442 | ||
dd4f5223 | 443 | static const char *__perf_evsel__sw_name(u64 config) |
335c2f5d ACM |
444 | { |
445 | if (config < PERF_COUNT_SW_MAX && perf_evsel__sw_names[config]) | |
446 | return perf_evsel__sw_names[config]; | |
447 | return "unknown-software"; | |
448 | } | |
449 | ||
450 | static int perf_evsel__sw_name(struct perf_evsel *evsel, char *bf, size_t size) | |
451 | { | |
452 | int r = scnprintf(bf, size, "%s", __perf_evsel__sw_name(evsel->attr.config)); | |
453 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
454 | } | |
455 | ||
287e74aa JO |
456 | static int __perf_evsel__bp_name(char *bf, size_t size, u64 addr, u64 type) |
457 | { | |
458 | int r; | |
459 | ||
460 | r = scnprintf(bf, size, "mem:0x%" PRIx64 ":", addr); | |
461 | ||
462 | if (type & HW_BREAKPOINT_R) | |
463 | r += scnprintf(bf + r, size - r, "r"); | |
464 | ||
465 | if (type & HW_BREAKPOINT_W) | |
466 | r += scnprintf(bf + r, size - r, "w"); | |
467 | ||
468 | if (type & HW_BREAKPOINT_X) | |
469 | r += scnprintf(bf + r, size - r, "x"); | |
470 | ||
471 | return r; | |
472 | } | |
473 | ||
474 | static int perf_evsel__bp_name(struct perf_evsel *evsel, char *bf, size_t size) | |
475 | { | |
476 | struct perf_event_attr *attr = &evsel->attr; | |
477 | int r = __perf_evsel__bp_name(bf, size, attr->bp_addr, attr->bp_type); | |
478 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
479 | } | |
480 | ||
0b668bc9 ACM |
481 | const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] |
482 | [PERF_EVSEL__MAX_ALIASES] = { | |
483 | { "L1-dcache", "l1-d", "l1d", "L1-data", }, | |
484 | { "L1-icache", "l1-i", "l1i", "L1-instruction", }, | |
485 | { "LLC", "L2", }, | |
486 | { "dTLB", "d-tlb", "Data-TLB", }, | |
487 | { "iTLB", "i-tlb", "Instruction-TLB", }, | |
488 | { "branch", "branches", "bpu", "btb", "bpc", }, | |
489 | { "node", }, | |
490 | }; | |
491 | ||
492 | const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] | |
493 | [PERF_EVSEL__MAX_ALIASES] = { | |
494 | { "load", "loads", "read", }, | |
495 | { "store", "stores", "write", }, | |
496 | { "prefetch", "prefetches", "speculative-read", "speculative-load", }, | |
497 | }; | |
498 | ||
499 | const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] | |
500 | [PERF_EVSEL__MAX_ALIASES] = { | |
501 | { "refs", "Reference", "ops", "access", }, | |
502 | { "misses", "miss", }, | |
503 | }; | |
504 | ||
505 | #define C(x) PERF_COUNT_HW_CACHE_##x | |
506 | #define CACHE_READ (1 << C(OP_READ)) | |
507 | #define CACHE_WRITE (1 << C(OP_WRITE)) | |
508 | #define CACHE_PREFETCH (1 << C(OP_PREFETCH)) | |
509 | #define COP(x) (1 << x) | |
510 | ||
511 | /* | |
512 | * cache operartion stat | |
513 | * L1I : Read and prefetch only | |
514 | * ITLB and BPU : Read-only | |
515 | */ | |
516 | static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = { | |
517 | [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
518 | [C(L1I)] = (CACHE_READ | CACHE_PREFETCH), | |
519 | [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
520 | [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
521 | [C(ITLB)] = (CACHE_READ), | |
522 | [C(BPU)] = (CACHE_READ), | |
523 | [C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
524 | }; | |
525 | ||
526 | bool perf_evsel__is_cache_op_valid(u8 type, u8 op) | |
527 | { | |
528 | if (perf_evsel__hw_cache_stat[type] & COP(op)) | |
529 | return true; /* valid */ | |
530 | else | |
531 | return false; /* invalid */ | |
532 | } | |
533 | ||
534 | int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, | |
535 | char *bf, size_t size) | |
536 | { | |
537 | if (result) { | |
538 | return scnprintf(bf, size, "%s-%s-%s", perf_evsel__hw_cache[type][0], | |
539 | perf_evsel__hw_cache_op[op][0], | |
540 | perf_evsel__hw_cache_result[result][0]); | |
541 | } | |
542 | ||
543 | return scnprintf(bf, size, "%s-%s", perf_evsel__hw_cache[type][0], | |
544 | perf_evsel__hw_cache_op[op][1]); | |
545 | } | |
546 | ||
dd4f5223 | 547 | static int __perf_evsel__hw_cache_name(u64 config, char *bf, size_t size) |
0b668bc9 ACM |
548 | { |
549 | u8 op, result, type = (config >> 0) & 0xff; | |
550 | const char *err = "unknown-ext-hardware-cache-type"; | |
551 | ||
c53412ee | 552 | if (type >= PERF_COUNT_HW_CACHE_MAX) |
0b668bc9 ACM |
553 | goto out_err; |
554 | ||
555 | op = (config >> 8) & 0xff; | |
556 | err = "unknown-ext-hardware-cache-op"; | |
c53412ee | 557 | if (op >= PERF_COUNT_HW_CACHE_OP_MAX) |
0b668bc9 ACM |
558 | goto out_err; |
559 | ||
560 | result = (config >> 16) & 0xff; | |
561 | err = "unknown-ext-hardware-cache-result"; | |
c53412ee | 562 | if (result >= PERF_COUNT_HW_CACHE_RESULT_MAX) |
0b668bc9 ACM |
563 | goto out_err; |
564 | ||
565 | err = "invalid-cache"; | |
566 | if (!perf_evsel__is_cache_op_valid(type, op)) | |
567 | goto out_err; | |
568 | ||
569 | return __perf_evsel__hw_cache_type_op_res_name(type, op, result, bf, size); | |
570 | out_err: | |
571 | return scnprintf(bf, size, "%s", err); | |
572 | } | |
573 | ||
574 | static int perf_evsel__hw_cache_name(struct perf_evsel *evsel, char *bf, size_t size) | |
575 | { | |
576 | int ret = __perf_evsel__hw_cache_name(evsel->attr.config, bf, size); | |
577 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); | |
578 | } | |
579 | ||
6eef3d9c ACM |
580 | static int perf_evsel__raw_name(struct perf_evsel *evsel, char *bf, size_t size) |
581 | { | |
582 | int ret = scnprintf(bf, size, "raw 0x%" PRIx64, evsel->attr.config); | |
583 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); | |
584 | } | |
585 | ||
7289f83c | 586 | const char *perf_evsel__name(struct perf_evsel *evsel) |
a4460836 | 587 | { |
7289f83c | 588 | char bf[128]; |
a4460836 | 589 | |
7289f83c ACM |
590 | if (evsel->name) |
591 | return evsel->name; | |
c410431c ACM |
592 | |
593 | switch (evsel->attr.type) { | |
594 | case PERF_TYPE_RAW: | |
6eef3d9c | 595 | perf_evsel__raw_name(evsel, bf, sizeof(bf)); |
c410431c ACM |
596 | break; |
597 | ||
598 | case PERF_TYPE_HARDWARE: | |
7289f83c | 599 | perf_evsel__hw_name(evsel, bf, sizeof(bf)); |
c410431c | 600 | break; |
0b668bc9 ACM |
601 | |
602 | case PERF_TYPE_HW_CACHE: | |
7289f83c | 603 | perf_evsel__hw_cache_name(evsel, bf, sizeof(bf)); |
0b668bc9 ACM |
604 | break; |
605 | ||
335c2f5d | 606 | case PERF_TYPE_SOFTWARE: |
7289f83c | 607 | perf_evsel__sw_name(evsel, bf, sizeof(bf)); |
335c2f5d ACM |
608 | break; |
609 | ||
a4460836 | 610 | case PERF_TYPE_TRACEPOINT: |
7289f83c | 611 | scnprintf(bf, sizeof(bf), "%s", "unknown tracepoint"); |
a4460836 ACM |
612 | break; |
613 | ||
287e74aa JO |
614 | case PERF_TYPE_BREAKPOINT: |
615 | perf_evsel__bp_name(evsel, bf, sizeof(bf)); | |
616 | break; | |
617 | ||
c410431c | 618 | default: |
ca1b1457 RR |
619 | scnprintf(bf, sizeof(bf), "unknown attr type: %d", |
620 | evsel->attr.type); | |
a4460836 | 621 | break; |
c410431c ACM |
622 | } |
623 | ||
7289f83c ACM |
624 | evsel->name = strdup(bf); |
625 | ||
626 | return evsel->name ?: "unknown"; | |
c410431c ACM |
627 | } |
628 | ||
717e263f NK |
629 | const char *perf_evsel__group_name(struct perf_evsel *evsel) |
630 | { | |
631 | return evsel->group_name ?: "anon group"; | |
632 | } | |
633 | ||
634 | int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size) | |
635 | { | |
636 | int ret; | |
637 | struct perf_evsel *pos; | |
638 | const char *group_name = perf_evsel__group_name(evsel); | |
639 | ||
640 | ret = scnprintf(buf, size, "%s", group_name); | |
641 | ||
642 | ret += scnprintf(buf + ret, size - ret, " { %s", | |
643 | perf_evsel__name(evsel)); | |
644 | ||
645 | for_each_group_member(pos, evsel) | |
646 | ret += scnprintf(buf + ret, size - ret, ", %s", | |
647 | perf_evsel__name(pos)); | |
648 | ||
649 | ret += scnprintf(buf + ret, size - ret, " }"); | |
650 | ||
651 | return ret; | |
652 | } | |
653 | ||
01e0d50c ACM |
654 | void perf_evsel__config_callchain(struct perf_evsel *evsel, |
655 | struct record_opts *opts, | |
656 | struct callchain_param *param) | |
6bedfab6 JO |
657 | { |
658 | bool function = perf_evsel__is_function_event(evsel); | |
659 | struct perf_event_attr *attr = &evsel->attr; | |
660 | ||
661 | perf_evsel__set_sample_bit(evsel, CALLCHAIN); | |
662 | ||
792d48b4 ACM |
663 | attr->sample_max_stack = param->max_stack; |
664 | ||
c3a6a8c4 | 665 | if (param->record_mode == CALLCHAIN_LBR) { |
aad2b21c KL |
666 | if (!opts->branch_stack) { |
667 | if (attr->exclude_user) { | |
668 | pr_warning("LBR callstack option is only available " | |
669 | "to get user callchain information. " | |
670 | "Falling back to framepointers.\n"); | |
671 | } else { | |
672 | perf_evsel__set_sample_bit(evsel, BRANCH_STACK); | |
673 | attr->branch_sample_type = PERF_SAMPLE_BRANCH_USER | | |
bd0f8895 AK |
674 | PERF_SAMPLE_BRANCH_CALL_STACK | |
675 | PERF_SAMPLE_BRANCH_NO_CYCLES | | |
676 | PERF_SAMPLE_BRANCH_NO_FLAGS; | |
aad2b21c KL |
677 | } |
678 | } else | |
679 | pr_warning("Cannot use LBR callstack with branch stack. " | |
680 | "Falling back to framepointers.\n"); | |
681 | } | |
682 | ||
c3a6a8c4 | 683 | if (param->record_mode == CALLCHAIN_DWARF) { |
6bedfab6 JO |
684 | if (!function) { |
685 | perf_evsel__set_sample_bit(evsel, REGS_USER); | |
686 | perf_evsel__set_sample_bit(evsel, STACK_USER); | |
84c41742 | 687 | attr->sample_regs_user |= PERF_REGS_MASK; |
c3a6a8c4 | 688 | attr->sample_stack_user = param->dump_size; |
6bedfab6 JO |
689 | attr->exclude_callchain_user = 1; |
690 | } else { | |
691 | pr_info("Cannot use DWARF unwind for function trace event," | |
692 | " falling back to framepointers.\n"); | |
693 | } | |
694 | } | |
695 | ||
696 | if (function) { | |
697 | pr_info("Disabling user space callchains for function trace event.\n"); | |
698 | attr->exclude_callchain_user = 1; | |
699 | } | |
700 | } | |
701 | ||
d457c963 KL |
702 | static void |
703 | perf_evsel__reset_callgraph(struct perf_evsel *evsel, | |
704 | struct callchain_param *param) | |
705 | { | |
706 | struct perf_event_attr *attr = &evsel->attr; | |
707 | ||
708 | perf_evsel__reset_sample_bit(evsel, CALLCHAIN); | |
709 | if (param->record_mode == CALLCHAIN_LBR) { | |
710 | perf_evsel__reset_sample_bit(evsel, BRANCH_STACK); | |
711 | attr->branch_sample_type &= ~(PERF_SAMPLE_BRANCH_USER | | |
712 | PERF_SAMPLE_BRANCH_CALL_STACK); | |
713 | } | |
714 | if (param->record_mode == CALLCHAIN_DWARF) { | |
715 | perf_evsel__reset_sample_bit(evsel, REGS_USER); | |
716 | perf_evsel__reset_sample_bit(evsel, STACK_USER); | |
717 | } | |
718 | } | |
719 | ||
720 | static void apply_config_terms(struct perf_evsel *evsel, | |
721 | struct record_opts *opts) | |
930a2e29 JO |
722 | { |
723 | struct perf_evsel_config_term *term; | |
32067712 KL |
724 | struct list_head *config_terms = &evsel->config_terms; |
725 | struct perf_event_attr *attr = &evsel->attr; | |
d457c963 KL |
726 | struct callchain_param param; |
727 | u32 dump_size = 0; | |
792d48b4 ACM |
728 | int max_stack = 0; |
729 | const char *callgraph_buf = NULL; | |
d457c963 KL |
730 | |
731 | /* callgraph default */ | |
732 | param.record_mode = callchain_param.record_mode; | |
930a2e29 JO |
733 | |
734 | list_for_each_entry(term, config_terms, list) { | |
735 | switch (term->type) { | |
ee4c7588 | 736 | case PERF_EVSEL__CONFIG_TERM_PERIOD: |
59622fd4 AK |
737 | if (!(term->weak && opts->user_interval != ULLONG_MAX)) { |
738 | attr->sample_period = term->val.period; | |
739 | attr->freq = 0; | |
740 | } | |
32067712 | 741 | break; |
09af2a55 | 742 | case PERF_EVSEL__CONFIG_TERM_FREQ: |
59622fd4 AK |
743 | if (!(term->weak && opts->user_freq != UINT_MAX)) { |
744 | attr->sample_freq = term->val.freq; | |
745 | attr->freq = 1; | |
746 | } | |
09af2a55 | 747 | break; |
32067712 KL |
748 | case PERF_EVSEL__CONFIG_TERM_TIME: |
749 | if (term->val.time) | |
750 | perf_evsel__set_sample_bit(evsel, TIME); | |
751 | else | |
752 | perf_evsel__reset_sample_bit(evsel, TIME); | |
753 | break; | |
d457c963 KL |
754 | case PERF_EVSEL__CONFIG_TERM_CALLGRAPH: |
755 | callgraph_buf = term->val.callgraph; | |
756 | break; | |
ac12f676 AK |
757 | case PERF_EVSEL__CONFIG_TERM_BRANCH: |
758 | if (term->val.branch && strcmp(term->val.branch, "no")) { | |
759 | perf_evsel__set_sample_bit(evsel, BRANCH_STACK); | |
760 | parse_branch_str(term->val.branch, | |
761 | &attr->branch_sample_type); | |
762 | } else | |
763 | perf_evsel__reset_sample_bit(evsel, BRANCH_STACK); | |
764 | break; | |
d457c963 KL |
765 | case PERF_EVSEL__CONFIG_TERM_STACK_USER: |
766 | dump_size = term->val.stack_user; | |
767 | break; | |
792d48b4 ACM |
768 | case PERF_EVSEL__CONFIG_TERM_MAX_STACK: |
769 | max_stack = term->val.max_stack; | |
770 | break; | |
374ce938 WN |
771 | case PERF_EVSEL__CONFIG_TERM_INHERIT: |
772 | /* | |
773 | * attr->inherit should has already been set by | |
774 | * perf_evsel__config. If user explicitly set | |
775 | * inherit using config terms, override global | |
776 | * opt->no_inherit setting. | |
777 | */ | |
778 | attr->inherit = term->val.inherit ? 1 : 0; | |
779 | break; | |
626a6b78 WN |
780 | case PERF_EVSEL__CONFIG_TERM_OVERWRITE: |
781 | attr->write_backward = term->val.overwrite ? 1 : 0; | |
782 | break; | |
930a2e29 JO |
783 | default: |
784 | break; | |
785 | } | |
786 | } | |
d457c963 KL |
787 | |
788 | /* User explicitly set per-event callgraph, clear the old setting and reset. */ | |
792d48b4 ACM |
789 | if ((callgraph_buf != NULL) || (dump_size > 0) || max_stack) { |
790 | if (max_stack) { | |
791 | param.max_stack = max_stack; | |
792 | if (callgraph_buf == NULL) | |
793 | callgraph_buf = "fp"; | |
794 | } | |
d457c963 KL |
795 | |
796 | /* parse callgraph parameters */ | |
797 | if (callgraph_buf != NULL) { | |
f9db0d0f KL |
798 | if (!strcmp(callgraph_buf, "no")) { |
799 | param.enabled = false; | |
800 | param.record_mode = CALLCHAIN_NONE; | |
801 | } else { | |
802 | param.enabled = true; | |
803 | if (parse_callchain_record(callgraph_buf, ¶m)) { | |
804 | pr_err("per-event callgraph setting for %s failed. " | |
805 | "Apply callgraph global setting for it\n", | |
806 | evsel->name); | |
807 | return; | |
808 | } | |
d457c963 KL |
809 | } |
810 | } | |
811 | if (dump_size > 0) { | |
812 | dump_size = round_up(dump_size, sizeof(u64)); | |
813 | param.dump_size = dump_size; | |
814 | } | |
815 | ||
816 | /* If global callgraph set, clear it */ | |
817 | if (callchain_param.enabled) | |
818 | perf_evsel__reset_callgraph(evsel, &callchain_param); | |
819 | ||
820 | /* set perf-event callgraph */ | |
821 | if (param.enabled) | |
01e0d50c | 822 | perf_evsel__config_callchain(evsel, opts, ¶m); |
d457c963 | 823 | } |
930a2e29 JO |
824 | } |
825 | ||
774cb499 JO |
826 | /* |
827 | * The enable_on_exec/disabled value strategy: | |
828 | * | |
829 | * 1) For any type of traced program: | |
830 | * - all independent events and group leaders are disabled | |
831 | * - all group members are enabled | |
832 | * | |
833 | * Group members are ruled by group leaders. They need to | |
834 | * be enabled, because the group scheduling relies on that. | |
835 | * | |
836 | * 2) For traced programs executed by perf: | |
837 | * - all independent events and group leaders have | |
838 | * enable_on_exec set | |
839 | * - we don't specifically enable or disable any event during | |
840 | * the record command | |
841 | * | |
842 | * Independent events and group leaders are initially disabled | |
843 | * and get enabled by exec. Group members are ruled by group | |
844 | * leaders as stated in 1). | |
845 | * | |
846 | * 3) For traced programs attached by perf (pid/tid): | |
847 | * - we specifically enable or disable all events during | |
848 | * the record command | |
849 | * | |
850 | * When attaching events to already running traced we | |
851 | * enable/disable events specifically, as there's no | |
852 | * initial traced exec call. | |
853 | */ | |
e68ae9cf ACM |
854 | void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts, |
855 | struct callchain_param *callchain) | |
0f82ebc4 | 856 | { |
3c176311 | 857 | struct perf_evsel *leader = evsel->leader; |
0f82ebc4 | 858 | struct perf_event_attr *attr = &evsel->attr; |
60b0896c | 859 | int track = evsel->tracking; |
3aa5939d | 860 | bool per_cpu = opts->target.default_per_cpu && !opts->target.per_thread; |
0f82ebc4 | 861 | |
594ac61a | 862 | attr->sample_id_all = perf_missing_features.sample_id_all ? 0 : 1; |
0f82ebc4 | 863 | attr->inherit = !opts->no_inherit; |
626a6b78 | 864 | attr->write_backward = opts->overwrite ? 1 : 0; |
0f82ebc4 | 865 | |
7be5ebe8 ACM |
866 | perf_evsel__set_sample_bit(evsel, IP); |
867 | perf_evsel__set_sample_bit(evsel, TID); | |
0f82ebc4 | 868 | |
3c176311 JO |
869 | if (evsel->sample_read) { |
870 | perf_evsel__set_sample_bit(evsel, READ); | |
871 | ||
872 | /* | |
873 | * We need ID even in case of single event, because | |
874 | * PERF_SAMPLE_READ process ID specific data. | |
875 | */ | |
75562573 | 876 | perf_evsel__set_sample_id(evsel, false); |
3c176311 JO |
877 | |
878 | /* | |
879 | * Apply group format only if we belong to group | |
880 | * with more than one members. | |
881 | */ | |
882 | if (leader->nr_members > 1) { | |
883 | attr->read_format |= PERF_FORMAT_GROUP; | |
884 | attr->inherit = 0; | |
885 | } | |
886 | } | |
887 | ||
0f82ebc4 | 888 | /* |
17314e23 | 889 | * We default some events to have a default interval. But keep |
0f82ebc4 ACM |
890 | * it a weak assumption overridable by the user. |
891 | */ | |
17314e23 | 892 | if (!attr->sample_period || (opts->user_freq != UINT_MAX || |
0f82ebc4 ACM |
893 | opts->user_interval != ULLONG_MAX)) { |
894 | if (opts->freq) { | |
7be5ebe8 | 895 | perf_evsel__set_sample_bit(evsel, PERIOD); |
0f82ebc4 ACM |
896 | attr->freq = 1; |
897 | attr->sample_freq = opts->freq; | |
898 | } else { | |
899 | attr->sample_period = opts->default_interval; | |
900 | } | |
901 | } | |
902 | ||
3c176311 JO |
903 | /* |
904 | * Disable sampling for all group members other | |
905 | * than leader in case leader 'leads' the sampling. | |
906 | */ | |
907 | if ((leader != evsel) && leader->sample_read) { | |
908 | attr->sample_freq = 0; | |
909 | attr->sample_period = 0; | |
910 | } | |
911 | ||
0f82ebc4 ACM |
912 | if (opts->no_samples) |
913 | attr->sample_freq = 0; | |
914 | ||
a17f0697 JO |
915 | if (opts->inherit_stat) { |
916 | evsel->attr.read_format |= | |
917 | PERF_FORMAT_TOTAL_TIME_ENABLED | | |
918 | PERF_FORMAT_TOTAL_TIME_RUNNING | | |
919 | PERF_FORMAT_ID; | |
0f82ebc4 | 920 | attr->inherit_stat = 1; |
a17f0697 | 921 | } |
0f82ebc4 ACM |
922 | |
923 | if (opts->sample_address) { | |
7be5ebe8 | 924 | perf_evsel__set_sample_bit(evsel, ADDR); |
0f82ebc4 ACM |
925 | attr->mmap_data = track; |
926 | } | |
927 | ||
f140373b JO |
928 | /* |
929 | * We don't allow user space callchains for function trace | |
930 | * event, due to issues with page faults while tracing page | |
931 | * fault handler and its overall trickiness nature. | |
932 | */ | |
933 | if (perf_evsel__is_function_event(evsel)) | |
934 | evsel->attr.exclude_callchain_user = 1; | |
935 | ||
e68ae9cf | 936 | if (callchain && callchain->enabled && !evsel->no_aux_samples) |
01e0d50c | 937 | perf_evsel__config_callchain(evsel, opts, callchain); |
26d33022 | 938 | |
6a21c0b5 | 939 | if (opts->sample_intr_regs) { |
bcc84ec6 | 940 | attr->sample_regs_intr = opts->sample_intr_regs; |
6a21c0b5 SE |
941 | perf_evsel__set_sample_bit(evsel, REGS_INTR); |
942 | } | |
943 | ||
84c41742 AK |
944 | if (opts->sample_user_regs) { |
945 | attr->sample_regs_user |= opts->sample_user_regs; | |
946 | perf_evsel__set_sample_bit(evsel, REGS_USER); | |
947 | } | |
948 | ||
b6f35ed7 | 949 | if (target__has_cpu(&opts->target) || opts->sample_cpu) |
7be5ebe8 | 950 | perf_evsel__set_sample_bit(evsel, CPU); |
0f82ebc4 | 951 | |
3e76ac78 | 952 | if (opts->period) |
7be5ebe8 | 953 | perf_evsel__set_sample_bit(evsel, PERIOD); |
3e76ac78 | 954 | |
8affc2b8 | 955 | /* |
bd1a0be5 | 956 | * When the user explicitly disabled time don't force it here. |
8affc2b8 AK |
957 | */ |
958 | if (opts->sample_time && | |
959 | (!perf_missing_features.sample_id_all && | |
3abebc55 AH |
960 | (!opts->no_inherit || target__has_cpu(&opts->target) || per_cpu || |
961 | opts->sample_time_set))) | |
7be5ebe8 | 962 | perf_evsel__set_sample_bit(evsel, TIME); |
0f82ebc4 | 963 | |
6ff1ce76 | 964 | if (opts->raw_samples && !evsel->no_aux_samples) { |
7be5ebe8 ACM |
965 | perf_evsel__set_sample_bit(evsel, TIME); |
966 | perf_evsel__set_sample_bit(evsel, RAW); | |
967 | perf_evsel__set_sample_bit(evsel, CPU); | |
0f82ebc4 ACM |
968 | } |
969 | ||
ccf49bfc | 970 | if (opts->sample_address) |
1e7ed5ec | 971 | perf_evsel__set_sample_bit(evsel, DATA_SRC); |
ccf49bfc | 972 | |
3b0a5daa KL |
973 | if (opts->sample_phys_addr) |
974 | perf_evsel__set_sample_bit(evsel, PHYS_ADDR); | |
975 | ||
509051ea | 976 | if (opts->no_buffering) { |
0f82ebc4 ACM |
977 | attr->watermark = 0; |
978 | attr->wakeup_events = 1; | |
979 | } | |
6ff1ce76 | 980 | if (opts->branch_stack && !evsel->no_aux_samples) { |
7be5ebe8 | 981 | perf_evsel__set_sample_bit(evsel, BRANCH_STACK); |
bdfebd84 RAV |
982 | attr->branch_sample_type = opts->branch_stack; |
983 | } | |
0f82ebc4 | 984 | |
05484298 | 985 | if (opts->sample_weight) |
1e7ed5ec | 986 | perf_evsel__set_sample_bit(evsel, WEIGHT); |
05484298 | 987 | |
62e503b7 | 988 | attr->task = track; |
5c5e854b | 989 | attr->mmap = track; |
a5a5ba72 | 990 | attr->mmap2 = track && !perf_missing_features.mmap2; |
5c5e854b | 991 | attr->comm = track; |
0f82ebc4 | 992 | |
f3b3614a HB |
993 | if (opts->record_namespaces) |
994 | attr->namespaces = track; | |
995 | ||
b757bb09 AH |
996 | if (opts->record_switch_events) |
997 | attr->context_switch = track; | |
998 | ||
475eeab9 | 999 | if (opts->sample_transaction) |
1e7ed5ec | 1000 | perf_evsel__set_sample_bit(evsel, TRANSACTION); |
475eeab9 | 1001 | |
85c273d2 AK |
1002 | if (opts->running_time) { |
1003 | evsel->attr.read_format |= | |
1004 | PERF_FORMAT_TOTAL_TIME_ENABLED | | |
1005 | PERF_FORMAT_TOTAL_TIME_RUNNING; | |
1006 | } | |
1007 | ||
774cb499 JO |
1008 | /* |
1009 | * XXX see the function comment above | |
1010 | * | |
1011 | * Disabling only independent events or group leaders, | |
1012 | * keeping group members enabled. | |
1013 | */ | |
823254ed | 1014 | if (perf_evsel__is_group_leader(evsel)) |
774cb499 JO |
1015 | attr->disabled = 1; |
1016 | ||
1017 | /* | |
1018 | * Setting enable_on_exec for independent events and | |
1019 | * group leaders for traced executed by perf. | |
1020 | */ | |
6619a53e AK |
1021 | if (target__none(&opts->target) && perf_evsel__is_group_leader(evsel) && |
1022 | !opts->initial_delay) | |
0f82ebc4 | 1023 | attr->enable_on_exec = 1; |
2afd2bcf AH |
1024 | |
1025 | if (evsel->immediate) { | |
1026 | attr->disabled = 0; | |
1027 | attr->enable_on_exec = 0; | |
1028 | } | |
814c8c38 PZ |
1029 | |
1030 | clockid = opts->clockid; | |
1031 | if (opts->use_clockid) { | |
1032 | attr->use_clockid = 1; | |
1033 | attr->clockid = opts->clockid; | |
1034 | } | |
930a2e29 | 1035 | |
7f94af7a JO |
1036 | if (evsel->precise_max) |
1037 | perf_event_attr__set_max_precise_ip(attr); | |
1038 | ||
85723885 JO |
1039 | if (opts->all_user) { |
1040 | attr->exclude_kernel = 1; | |
1041 | attr->exclude_user = 0; | |
1042 | } | |
1043 | ||
1044 | if (opts->all_kernel) { | |
1045 | attr->exclude_kernel = 0; | |
1046 | attr->exclude_user = 1; | |
1047 | } | |
1048 | ||
930a2e29 JO |
1049 | /* |
1050 | * Apply event specific term settings, | |
1051 | * it overloads any global configuration. | |
1052 | */ | |
d457c963 | 1053 | apply_config_terms(evsel, opts); |
a359c17a JO |
1054 | |
1055 | evsel->ignore_missing_thread = opts->ignore_missing_thread; | |
0f82ebc4 ACM |
1056 | } |
1057 | ||
8885846f | 1058 | static int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads) |
69aad6f1 | 1059 | { |
bf8e8f4b AH |
1060 | if (evsel->system_wide) |
1061 | nthreads = 1; | |
1062 | ||
69aad6f1 | 1063 | evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int)); |
4af4c955 DA |
1064 | |
1065 | if (evsel->fd) { | |
18ef15c6 | 1066 | int cpu, thread; |
4af4c955 DA |
1067 | for (cpu = 0; cpu < ncpus; cpu++) { |
1068 | for (thread = 0; thread < nthreads; thread++) { | |
1069 | FD(evsel, cpu, thread) = -1; | |
1070 | } | |
1071 | } | |
1072 | } | |
1073 | ||
69aad6f1 ACM |
1074 | return evsel->fd != NULL ? 0 : -ENOMEM; |
1075 | } | |
1076 | ||
475fb533 | 1077 | static int perf_evsel__run_ioctl(struct perf_evsel *evsel, |
e2407bef | 1078 | int ioc, void *arg) |
745cefc5 ACM |
1079 | { |
1080 | int cpu, thread; | |
1081 | ||
475fb533 AK |
1082 | for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++) { |
1083 | for (thread = 0; thread < xyarray__max_y(evsel->fd); thread++) { | |
745cefc5 | 1084 | int fd = FD(evsel, cpu, thread), |
e2407bef | 1085 | err = ioctl(fd, ioc, arg); |
745cefc5 ACM |
1086 | |
1087 | if (err) | |
1088 | return err; | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | return 0; | |
1093 | } | |
1094 | ||
475fb533 | 1095 | int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter) |
e2407bef | 1096 | { |
475fb533 | 1097 | return perf_evsel__run_ioctl(evsel, |
e2407bef AK |
1098 | PERF_EVENT_IOC_SET_FILTER, |
1099 | (void *)filter); | |
1100 | } | |
1101 | ||
12467ae4 ACM |
1102 | int perf_evsel__set_filter(struct perf_evsel *evsel, const char *filter) |
1103 | { | |
1104 | char *new_filter = strdup(filter); | |
1105 | ||
1106 | if (new_filter != NULL) { | |
1107 | free(evsel->filter); | |
1108 | evsel->filter = new_filter; | |
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | return -1; | |
1113 | } | |
1114 | ||
3541c034 MP |
1115 | static int perf_evsel__append_filter(struct perf_evsel *evsel, |
1116 | const char *fmt, const char *filter) | |
64ec84f5 ACM |
1117 | { |
1118 | char *new_filter; | |
1119 | ||
1120 | if (evsel->filter == NULL) | |
1121 | return perf_evsel__set_filter(evsel, filter); | |
1122 | ||
b15d0a4c | 1123 | if (asprintf(&new_filter, fmt, evsel->filter, filter) > 0) { |
64ec84f5 ACM |
1124 | free(evsel->filter); |
1125 | evsel->filter = new_filter; | |
1126 | return 0; | |
1127 | } | |
1128 | ||
1129 | return -1; | |
1130 | } | |
1131 | ||
3541c034 MP |
1132 | int perf_evsel__append_tp_filter(struct perf_evsel *evsel, const char *filter) |
1133 | { | |
1134 | return perf_evsel__append_filter(evsel, "(%s) && (%s)", filter); | |
1135 | } | |
1136 | ||
1e857484 MP |
1137 | int perf_evsel__append_addr_filter(struct perf_evsel *evsel, const char *filter) |
1138 | { | |
1139 | return perf_evsel__append_filter(evsel, "%s,%s", filter); | |
1140 | } | |
1141 | ||
5cd95fc3 | 1142 | int perf_evsel__enable(struct perf_evsel *evsel) |
e2407bef | 1143 | { |
475fb533 | 1144 | return perf_evsel__run_ioctl(evsel, |
e2407bef AK |
1145 | PERF_EVENT_IOC_ENABLE, |
1146 | 0); | |
1147 | } | |
1148 | ||
e98a4cbb JO |
1149 | int perf_evsel__disable(struct perf_evsel *evsel) |
1150 | { | |
475fb533 | 1151 | return perf_evsel__run_ioctl(evsel, |
e98a4cbb JO |
1152 | PERF_EVENT_IOC_DISABLE, |
1153 | 0); | |
1154 | } | |
1155 | ||
70db7533 ACM |
1156 | int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads) |
1157 | { | |
8d9cbd8f VG |
1158 | if (ncpus == 0 || nthreads == 0) |
1159 | return 0; | |
1160 | ||
bf8e8f4b AH |
1161 | if (evsel->system_wide) |
1162 | nthreads = 1; | |
1163 | ||
a91e5431 ACM |
1164 | evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id)); |
1165 | if (evsel->sample_id == NULL) | |
1166 | return -ENOMEM; | |
1167 | ||
1168 | evsel->id = zalloc(ncpus * nthreads * sizeof(u64)); | |
1169 | if (evsel->id == NULL) { | |
1170 | xyarray__delete(evsel->sample_id); | |
1171 | evsel->sample_id = NULL; | |
1172 | return -ENOMEM; | |
1173 | } | |
1174 | ||
1175 | return 0; | |
70db7533 ACM |
1176 | } |
1177 | ||
8885846f | 1178 | static void perf_evsel__free_fd(struct perf_evsel *evsel) |
69aad6f1 ACM |
1179 | { |
1180 | xyarray__delete(evsel->fd); | |
1181 | evsel->fd = NULL; | |
1182 | } | |
1183 | ||
8885846f | 1184 | static void perf_evsel__free_id(struct perf_evsel *evsel) |
70db7533 | 1185 | { |
a91e5431 ACM |
1186 | xyarray__delete(evsel->sample_id); |
1187 | evsel->sample_id = NULL; | |
04662523 | 1188 | zfree(&evsel->id); |
70db7533 ACM |
1189 | } |
1190 | ||
930a2e29 JO |
1191 | static void perf_evsel__free_config_terms(struct perf_evsel *evsel) |
1192 | { | |
1193 | struct perf_evsel_config_term *term, *h; | |
1194 | ||
1195 | list_for_each_entry_safe(term, h, &evsel->config_terms, list) { | |
1196 | list_del(&term->list); | |
1197 | free(term); | |
1198 | } | |
1199 | } | |
1200 | ||
475fb533 | 1201 | void perf_evsel__close_fd(struct perf_evsel *evsel) |
c52b12ed ACM |
1202 | { |
1203 | int cpu, thread; | |
1204 | ||
475fb533 AK |
1205 | for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++) |
1206 | for (thread = 0; thread < xyarray__max_y(evsel->fd); ++thread) { | |
c52b12ed ACM |
1207 | close(FD(evsel, cpu, thread)); |
1208 | FD(evsel, cpu, thread) = -1; | |
1209 | } | |
1210 | } | |
1211 | ||
ef1d1af2 | 1212 | void perf_evsel__exit(struct perf_evsel *evsel) |
69aad6f1 ACM |
1213 | { |
1214 | assert(list_empty(&evsel->node)); | |
d49e4695 | 1215 | assert(evsel->evlist == NULL); |
736b05a0 NK |
1216 | perf_evsel__free_fd(evsel); |
1217 | perf_evsel__free_id(evsel); | |
930a2e29 | 1218 | perf_evsel__free_config_terms(evsel); |
597e48c1 | 1219 | close_cgroup(evsel->cgrp); |
f30a79b0 | 1220 | cpu_map__put(evsel->cpus); |
fce4d296 | 1221 | cpu_map__put(evsel->own_cpus); |
578e91ec | 1222 | thread_map__put(evsel->threads); |
597e48c1 | 1223 | zfree(&evsel->group_name); |
597e48c1 | 1224 | zfree(&evsel->name); |
ce8ccff5 | 1225 | perf_evsel__object.fini(evsel); |
ef1d1af2 ACM |
1226 | } |
1227 | ||
1228 | void perf_evsel__delete(struct perf_evsel *evsel) | |
1229 | { | |
1230 | perf_evsel__exit(evsel); | |
69aad6f1 ACM |
1231 | free(evsel); |
1232 | } | |
c52b12ed | 1233 | |
a6fa0038 | 1234 | void perf_evsel__compute_deltas(struct perf_evsel *evsel, int cpu, int thread, |
857a94a2 | 1235 | struct perf_counts_values *count) |
c7a79c47 SE |
1236 | { |
1237 | struct perf_counts_values tmp; | |
1238 | ||
1239 | if (!evsel->prev_raw_counts) | |
1240 | return; | |
1241 | ||
1242 | if (cpu == -1) { | |
1243 | tmp = evsel->prev_raw_counts->aggr; | |
1244 | evsel->prev_raw_counts->aggr = *count; | |
1245 | } else { | |
a6fa0038 JO |
1246 | tmp = *perf_counts(evsel->prev_raw_counts, cpu, thread); |
1247 | *perf_counts(evsel->prev_raw_counts, cpu, thread) = *count; | |
c7a79c47 SE |
1248 | } |
1249 | ||
1250 | count->val = count->val - tmp.val; | |
1251 | count->ena = count->ena - tmp.ena; | |
1252 | count->run = count->run - tmp.run; | |
1253 | } | |
1254 | ||
13112bbf JO |
1255 | void perf_counts_values__scale(struct perf_counts_values *count, |
1256 | bool scale, s8 *pscaled) | |
1257 | { | |
1258 | s8 scaled = 0; | |
1259 | ||
1260 | if (scale) { | |
1261 | if (count->run == 0) { | |
1262 | scaled = -1; | |
1263 | count->val = 0; | |
1264 | } else if (count->run < count->ena) { | |
1265 | scaled = 1; | |
1266 | count->val = (u64)((double) count->val * count->ena / count->run + 0.5); | |
1267 | } | |
1268 | } else | |
1269 | count->ena = count->run = 0; | |
1270 | ||
1271 | if (pscaled) | |
1272 | *pscaled = scaled; | |
1273 | } | |
1274 | ||
de63403b JO |
1275 | static int perf_evsel__read_size(struct perf_evsel *evsel) |
1276 | { | |
1277 | u64 read_format = evsel->attr.read_format; | |
1278 | int entry = sizeof(u64); /* value */ | |
1279 | int size = 0; | |
1280 | int nr = 1; | |
1281 | ||
1282 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) | |
1283 | size += sizeof(u64); | |
1284 | ||
1285 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) | |
1286 | size += sizeof(u64); | |
1287 | ||
1288 | if (read_format & PERF_FORMAT_ID) | |
1289 | entry += sizeof(u64); | |
1290 | ||
1291 | if (read_format & PERF_FORMAT_GROUP) { | |
1292 | nr = evsel->nr_members; | |
1293 | size += sizeof(u64); | |
1294 | } | |
1295 | ||
1296 | size += entry * nr; | |
1297 | return size; | |
1298 | } | |
1299 | ||
f99f4719 JO |
1300 | int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread, |
1301 | struct perf_counts_values *count) | |
1302 | { | |
de63403b JO |
1303 | size_t size = perf_evsel__read_size(evsel); |
1304 | ||
f99f4719 JO |
1305 | memset(count, 0, sizeof(*count)); |
1306 | ||
1307 | if (FD(evsel, cpu, thread) < 0) | |
1308 | return -EINVAL; | |
1309 | ||
de63403b | 1310 | if (readn(FD(evsel, cpu, thread), count->values, size) <= 0) |
f99f4719 JO |
1311 | return -errno; |
1312 | ||
1313 | return 0; | |
1314 | } | |
1315 | ||
f7794d52 JO |
1316 | static int |
1317 | perf_evsel__read_one(struct perf_evsel *evsel, int cpu, int thread) | |
1318 | { | |
1319 | struct perf_counts_values *count = perf_counts(evsel->counts, cpu, thread); | |
1320 | ||
1321 | return perf_evsel__read(evsel, cpu, thread, count); | |
1322 | } | |
1323 | ||
1324 | static void | |
1325 | perf_evsel__set_count(struct perf_evsel *counter, int cpu, int thread, | |
1326 | u64 val, u64 ena, u64 run) | |
1327 | { | |
1328 | struct perf_counts_values *count; | |
1329 | ||
1330 | count = perf_counts(counter->counts, cpu, thread); | |
1331 | ||
1332 | count->val = val; | |
1333 | count->ena = ena; | |
1334 | count->run = run; | |
82bf311e | 1335 | count->loaded = true; |
f7794d52 JO |
1336 | } |
1337 | ||
1338 | static int | |
1339 | perf_evsel__process_group_data(struct perf_evsel *leader, | |
1340 | int cpu, int thread, u64 *data) | |
1341 | { | |
1342 | u64 read_format = leader->attr.read_format; | |
1343 | struct sample_read_value *v; | |
1344 | u64 nr, ena = 0, run = 0, i; | |
1345 | ||
1346 | nr = *data++; | |
1347 | ||
1348 | if (nr != (u64) leader->nr_members) | |
1349 | return -EINVAL; | |
1350 | ||
1351 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) | |
1352 | ena = *data++; | |
1353 | ||
1354 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) | |
1355 | run = *data++; | |
1356 | ||
1357 | v = (struct sample_read_value *) data; | |
1358 | ||
1359 | perf_evsel__set_count(leader, cpu, thread, | |
1360 | v[0].value, ena, run); | |
1361 | ||
1362 | for (i = 1; i < nr; i++) { | |
1363 | struct perf_evsel *counter; | |
1364 | ||
1365 | counter = perf_evlist__id2evsel(leader->evlist, v[i].id); | |
1366 | if (!counter) | |
1367 | return -EINVAL; | |
1368 | ||
1369 | perf_evsel__set_count(counter, cpu, thread, | |
1370 | v[i].value, ena, run); | |
1371 | } | |
1372 | ||
1373 | return 0; | |
1374 | } | |
1375 | ||
1376 | static int | |
1377 | perf_evsel__read_group(struct perf_evsel *leader, int cpu, int thread) | |
1378 | { | |
8e2d8e20 | 1379 | struct perf_stat_evsel *ps = leader->stats; |
f7794d52 JO |
1380 | u64 read_format = leader->attr.read_format; |
1381 | int size = perf_evsel__read_size(leader); | |
1382 | u64 *data = ps->group_data; | |
1383 | ||
1384 | if (!(read_format & PERF_FORMAT_ID)) | |
1385 | return -EINVAL; | |
1386 | ||
1387 | if (!perf_evsel__is_group_leader(leader)) | |
1388 | return -EINVAL; | |
1389 | ||
1390 | if (!data) { | |
1391 | data = zalloc(size); | |
1392 | if (!data) | |
1393 | return -ENOMEM; | |
1394 | ||
1395 | ps->group_data = data; | |
1396 | } | |
1397 | ||
1398 | if (FD(leader, cpu, thread) < 0) | |
1399 | return -EINVAL; | |
1400 | ||
1401 | if (readn(FD(leader, cpu, thread), data, size) <= 0) | |
1402 | return -errno; | |
1403 | ||
1404 | return perf_evsel__process_group_data(leader, cpu, thread, data); | |
1405 | } | |
1406 | ||
1407 | int perf_evsel__read_counter(struct perf_evsel *evsel, int cpu, int thread) | |
1408 | { | |
1409 | u64 read_format = evsel->attr.read_format; | |
1410 | ||
1411 | if (read_format & PERF_FORMAT_GROUP) | |
1412 | return perf_evsel__read_group(evsel, cpu, thread); | |
1413 | else | |
1414 | return perf_evsel__read_one(evsel, cpu, thread); | |
1415 | } | |
1416 | ||
c52b12ed ACM |
1417 | int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, |
1418 | int cpu, int thread, bool scale) | |
1419 | { | |
1420 | struct perf_counts_values count; | |
1421 | size_t nv = scale ? 3 : 1; | |
1422 | ||
1423 | if (FD(evsel, cpu, thread) < 0) | |
1424 | return -EINVAL; | |
1425 | ||
a6fa0038 | 1426 | if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1, thread + 1) < 0) |
4eed11d5 ACM |
1427 | return -ENOMEM; |
1428 | ||
db49a717 | 1429 | if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) <= 0) |
c52b12ed ACM |
1430 | return -errno; |
1431 | ||
a6fa0038 | 1432 | perf_evsel__compute_deltas(evsel, cpu, thread, &count); |
13112bbf | 1433 | perf_counts_values__scale(&count, scale, NULL); |
a6fa0038 | 1434 | *perf_counts(evsel->counts, cpu, thread) = count; |
c52b12ed ACM |
1435 | return 0; |
1436 | } | |
1437 | ||
6a4bb04c JO |
1438 | static int get_group_fd(struct perf_evsel *evsel, int cpu, int thread) |
1439 | { | |
1440 | struct perf_evsel *leader = evsel->leader; | |
1441 | int fd; | |
1442 | ||
823254ed | 1443 | if (perf_evsel__is_group_leader(evsel)) |
6a4bb04c JO |
1444 | return -1; |
1445 | ||
1446 | /* | |
1447 | * Leader must be already processed/open, | |
1448 | * if not it's a bug. | |
1449 | */ | |
1450 | BUG_ON(!leader->fd); | |
1451 | ||
1452 | fd = FD(leader, cpu, thread); | |
1453 | BUG_ON(fd == -1); | |
1454 | ||
1455 | return fd; | |
1456 | } | |
1457 | ||
2c5e8c52 PZ |
1458 | struct bit_names { |
1459 | int bit; | |
1460 | const char *name; | |
1461 | }; | |
1462 | ||
1463 | static void __p_bits(char *buf, size_t size, u64 value, struct bit_names *bits) | |
1464 | { | |
1465 | bool first_bit = true; | |
1466 | int i = 0; | |
1467 | ||
1468 | do { | |
1469 | if (value & bits[i].bit) { | |
1470 | buf += scnprintf(buf, size, "%s%s", first_bit ? "" : "|", bits[i].name); | |
1471 | first_bit = false; | |
1472 | } | |
1473 | } while (bits[++i].name != NULL); | |
1474 | } | |
1475 | ||
1476 | static void __p_sample_type(char *buf, size_t size, u64 value) | |
1477 | { | |
1478 | #define bit_name(n) { PERF_SAMPLE_##n, #n } | |
1479 | struct bit_names bits[] = { | |
1480 | bit_name(IP), bit_name(TID), bit_name(TIME), bit_name(ADDR), | |
1481 | bit_name(READ), bit_name(CALLCHAIN), bit_name(ID), bit_name(CPU), | |
1482 | bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW), | |
1483 | bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER), | |
84422592 | 1484 | bit_name(IDENTIFIER), bit_name(REGS_INTR), bit_name(DATA_SRC), |
3b0a5daa | 1485 | bit_name(WEIGHT), bit_name(PHYS_ADDR), |
2c5e8c52 PZ |
1486 | { .name = NULL, } |
1487 | }; | |
1488 | #undef bit_name | |
1489 | __p_bits(buf, size, value, bits); | |
1490 | } | |
1491 | ||
a213b92e ACM |
1492 | static void __p_branch_sample_type(char *buf, size_t size, u64 value) |
1493 | { | |
1494 | #define bit_name(n) { PERF_SAMPLE_BRANCH_##n, #n } | |
1495 | struct bit_names bits[] = { | |
1496 | bit_name(USER), bit_name(KERNEL), bit_name(HV), bit_name(ANY), | |
1497 | bit_name(ANY_CALL), bit_name(ANY_RETURN), bit_name(IND_CALL), | |
1498 | bit_name(ABORT_TX), bit_name(IN_TX), bit_name(NO_TX), | |
1499 | bit_name(COND), bit_name(CALL_STACK), bit_name(IND_JUMP), | |
1500 | bit_name(CALL), bit_name(NO_FLAGS), bit_name(NO_CYCLES), | |
1501 | { .name = NULL, } | |
1502 | }; | |
1503 | #undef bit_name | |
1504 | __p_bits(buf, size, value, bits); | |
1505 | } | |
1506 | ||
2c5e8c52 PZ |
1507 | static void __p_read_format(char *buf, size_t size, u64 value) |
1508 | { | |
1509 | #define bit_name(n) { PERF_FORMAT_##n, #n } | |
1510 | struct bit_names bits[] = { | |
1511 | bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING), | |
1512 | bit_name(ID), bit_name(GROUP), | |
1513 | { .name = NULL, } | |
1514 | }; | |
1515 | #undef bit_name | |
1516 | __p_bits(buf, size, value, bits); | |
1517 | } | |
1518 | ||
1519 | #define BUF_SIZE 1024 | |
1520 | ||
7310aed7 | 1521 | #define p_hex(val) snprintf(buf, BUF_SIZE, "%#"PRIx64, (uint64_t)(val)) |
2c5e8c52 PZ |
1522 | #define p_unsigned(val) snprintf(buf, BUF_SIZE, "%"PRIu64, (uint64_t)(val)) |
1523 | #define p_signed(val) snprintf(buf, BUF_SIZE, "%"PRId64, (int64_t)(val)) | |
1524 | #define p_sample_type(val) __p_sample_type(buf, BUF_SIZE, val) | |
a213b92e | 1525 | #define p_branch_sample_type(val) __p_branch_sample_type(buf, BUF_SIZE, val) |
2c5e8c52 PZ |
1526 | #define p_read_format(val) __p_read_format(buf, BUF_SIZE, val) |
1527 | ||
1528 | #define PRINT_ATTRn(_n, _f, _p) \ | |
1529 | do { \ | |
1530 | if (attr->_f) { \ | |
1531 | _p(attr->_f); \ | |
1532 | ret += attr__fprintf(fp, _n, buf, priv);\ | |
1533 | } \ | |
1534 | } while (0) | |
1535 | ||
1536 | #define PRINT_ATTRf(_f, _p) PRINT_ATTRn(#_f, _f, _p) | |
1537 | ||
1538 | int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr, | |
1539 | attr__fprintf_f attr__fprintf, void *priv) | |
1540 | { | |
1541 | char buf[BUF_SIZE]; | |
1542 | int ret = 0; | |
1543 | ||
1544 | PRINT_ATTRf(type, p_unsigned); | |
1545 | PRINT_ATTRf(size, p_unsigned); | |
1546 | PRINT_ATTRf(config, p_hex); | |
1547 | PRINT_ATTRn("{ sample_period, sample_freq }", sample_period, p_unsigned); | |
1548 | PRINT_ATTRf(sample_type, p_sample_type); | |
1549 | PRINT_ATTRf(read_format, p_read_format); | |
1550 | ||
1551 | PRINT_ATTRf(disabled, p_unsigned); | |
1552 | PRINT_ATTRf(inherit, p_unsigned); | |
1553 | PRINT_ATTRf(pinned, p_unsigned); | |
1554 | PRINT_ATTRf(exclusive, p_unsigned); | |
1555 | PRINT_ATTRf(exclude_user, p_unsigned); | |
1556 | PRINT_ATTRf(exclude_kernel, p_unsigned); | |
1557 | PRINT_ATTRf(exclude_hv, p_unsigned); | |
1558 | PRINT_ATTRf(exclude_idle, p_unsigned); | |
1559 | PRINT_ATTRf(mmap, p_unsigned); | |
1560 | PRINT_ATTRf(comm, p_unsigned); | |
1561 | PRINT_ATTRf(freq, p_unsigned); | |
1562 | PRINT_ATTRf(inherit_stat, p_unsigned); | |
1563 | PRINT_ATTRf(enable_on_exec, p_unsigned); | |
1564 | PRINT_ATTRf(task, p_unsigned); | |
1565 | PRINT_ATTRf(watermark, p_unsigned); | |
1566 | PRINT_ATTRf(precise_ip, p_unsigned); | |
1567 | PRINT_ATTRf(mmap_data, p_unsigned); | |
1568 | PRINT_ATTRf(sample_id_all, p_unsigned); | |
1569 | PRINT_ATTRf(exclude_host, p_unsigned); | |
1570 | PRINT_ATTRf(exclude_guest, p_unsigned); | |
1571 | PRINT_ATTRf(exclude_callchain_kernel, p_unsigned); | |
1572 | PRINT_ATTRf(exclude_callchain_user, p_unsigned); | |
1573 | PRINT_ATTRf(mmap2, p_unsigned); | |
1574 | PRINT_ATTRf(comm_exec, p_unsigned); | |
1575 | PRINT_ATTRf(use_clockid, p_unsigned); | |
0286039f | 1576 | PRINT_ATTRf(context_switch, p_unsigned); |
0a241ef4 | 1577 | PRINT_ATTRf(write_backward, p_unsigned); |
2c5e8c52 PZ |
1578 | |
1579 | PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned); | |
1580 | PRINT_ATTRf(bp_type, p_unsigned); | |
1581 | PRINT_ATTRn("{ bp_addr, config1 }", bp_addr, p_hex); | |
1582 | PRINT_ATTRn("{ bp_len, config2 }", bp_len, p_hex); | |
a213b92e | 1583 | PRINT_ATTRf(branch_sample_type, p_branch_sample_type); |
2c5e8c52 PZ |
1584 | PRINT_ATTRf(sample_regs_user, p_hex); |
1585 | PRINT_ATTRf(sample_stack_user, p_unsigned); | |
1586 | PRINT_ATTRf(clockid, p_signed); | |
1587 | PRINT_ATTRf(sample_regs_intr, p_hex); | |
70d73de4 | 1588 | PRINT_ATTRf(aux_watermark, p_unsigned); |
792d48b4 | 1589 | PRINT_ATTRf(sample_max_stack, p_unsigned); |
e3e1a54f AH |
1590 | |
1591 | return ret; | |
1592 | } | |
1593 | ||
2c5e8c52 | 1594 | static int __open_attr__fprintf(FILE *fp, const char *name, const char *val, |
0353631a | 1595 | void *priv __maybe_unused) |
2c5e8c52 PZ |
1596 | { |
1597 | return fprintf(fp, " %-32s %s\n", name, val); | |
1598 | } | |
1599 | ||
a359c17a JO |
1600 | static bool ignore_missing_thread(struct perf_evsel *evsel, |
1601 | struct thread_map *threads, | |
1602 | int thread, int err) | |
1603 | { | |
1604 | if (!evsel->ignore_missing_thread) | |
1605 | return false; | |
1606 | ||
1607 | /* The system wide setup does not work with threads. */ | |
1608 | if (evsel->system_wide) | |
1609 | return false; | |
1610 | ||
1611 | /* The -ESRCH is perf event syscall errno for pid's not found. */ | |
1612 | if (err != -ESRCH) | |
1613 | return false; | |
1614 | ||
1615 | /* If there's only one thread, let it fail. */ | |
1616 | if (threads->nr == 1) | |
1617 | return false; | |
1618 | ||
1619 | if (thread_map__remove(threads, thread)) | |
1620 | return false; | |
1621 | ||
1622 | pr_warning("WARNING: Ignored open failure for pid %d\n", | |
1623 | thread_map__pid(threads, thread)); | |
1624 | return true; | |
1625 | } | |
1626 | ||
c24ae6d9 ACM |
1627 | int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, |
1628 | struct thread_map *threads) | |
48290609 | 1629 | { |
bf8e8f4b | 1630 | int cpu, thread, nthreads; |
57480d2c | 1631 | unsigned long flags = PERF_FLAG_FD_CLOEXEC; |
727ab04e | 1632 | int pid = -1, err; |
bec19672 | 1633 | enum { NO_CHANGE, SET_TO_MAX, INCREASED_MAX } set_rlimit = NO_CHANGE; |
48290609 | 1634 | |
32a951b4 ACM |
1635 | if (perf_missing_features.write_backward && evsel->attr.write_backward) |
1636 | return -EINVAL; | |
1637 | ||
c24ae6d9 ACM |
1638 | if (cpus == NULL) { |
1639 | static struct cpu_map *empty_cpu_map; | |
1640 | ||
1641 | if (empty_cpu_map == NULL) { | |
1642 | empty_cpu_map = cpu_map__dummy_new(); | |
1643 | if (empty_cpu_map == NULL) | |
1644 | return -ENOMEM; | |
1645 | } | |
1646 | ||
1647 | cpus = empty_cpu_map; | |
1648 | } | |
1649 | ||
1650 | if (threads == NULL) { | |
1651 | static struct thread_map *empty_thread_map; | |
1652 | ||
1653 | if (empty_thread_map == NULL) { | |
1654 | empty_thread_map = thread_map__new_by_tid(-1); | |
1655 | if (empty_thread_map == NULL) | |
1656 | return -ENOMEM; | |
1657 | } | |
1658 | ||
1659 | threads = empty_thread_map; | |
1660 | } | |
1661 | ||
bf8e8f4b AH |
1662 | if (evsel->system_wide) |
1663 | nthreads = 1; | |
1664 | else | |
1665 | nthreads = threads->nr; | |
1666 | ||
0252208e | 1667 | if (evsel->fd == NULL && |
bf8e8f4b | 1668 | perf_evsel__alloc_fd(evsel, cpus->nr, nthreads) < 0) |
727ab04e | 1669 | return -ENOMEM; |
4eed11d5 | 1670 | |
023695d9 | 1671 | if (evsel->cgrp) { |
57480d2c | 1672 | flags |= PERF_FLAG_PID_CGROUP; |
023695d9 SE |
1673 | pid = evsel->cgrp->fd; |
1674 | } | |
1675 | ||
594ac61a | 1676 | fallback_missing_features: |
814c8c38 PZ |
1677 | if (perf_missing_features.clockid_wrong) |
1678 | evsel->attr.clockid = CLOCK_MONOTONIC; /* should always work */ | |
1679 | if (perf_missing_features.clockid) { | |
1680 | evsel->attr.use_clockid = 0; | |
1681 | evsel->attr.clockid = 0; | |
1682 | } | |
57480d2c YD |
1683 | if (perf_missing_features.cloexec) |
1684 | flags &= ~(unsigned long)PERF_FLAG_FD_CLOEXEC; | |
5c5e854b SE |
1685 | if (perf_missing_features.mmap2) |
1686 | evsel->attr.mmap2 = 0; | |
594ac61a ACM |
1687 | if (perf_missing_features.exclude_guest) |
1688 | evsel->attr.exclude_guest = evsel->attr.exclude_host = 0; | |
bd0f8895 AK |
1689 | if (perf_missing_features.lbr_flags) |
1690 | evsel->attr.branch_sample_type &= ~(PERF_SAMPLE_BRANCH_NO_FLAGS | | |
1691 | PERF_SAMPLE_BRANCH_NO_CYCLES); | |
82bf311e JO |
1692 | if (perf_missing_features.group_read && evsel->attr.inherit) |
1693 | evsel->attr.read_format &= ~(PERF_FORMAT_GROUP|PERF_FORMAT_ID); | |
594ac61a ACM |
1694 | retry_sample_id: |
1695 | if (perf_missing_features.sample_id_all) | |
1696 | evsel->attr.sample_id_all = 0; | |
1697 | ||
2c5e8c52 PZ |
1698 | if (verbose >= 2) { |
1699 | fprintf(stderr, "%.60s\n", graph_dotted_line); | |
1700 | fprintf(stderr, "perf_event_attr:\n"); | |
1701 | perf_event_attr__fprintf(stderr, &evsel->attr, __open_attr__fprintf, NULL); | |
1702 | fprintf(stderr, "%.60s\n", graph_dotted_line); | |
1703 | } | |
e3e1a54f | 1704 | |
86bd5e86 | 1705 | for (cpu = 0; cpu < cpus->nr; cpu++) { |
9d04f178 | 1706 | |
bf8e8f4b | 1707 | for (thread = 0; thread < nthreads; thread++) { |
83c2e4f3 | 1708 | int fd, group_fd; |
023695d9 | 1709 | |
bf8e8f4b | 1710 | if (!evsel->cgrp && !evsel->system_wide) |
e13798c7 | 1711 | pid = thread_map__pid(threads, thread); |
023695d9 | 1712 | |
6a4bb04c | 1713 | group_fd = get_group_fd(evsel, cpu, thread); |
bec19672 | 1714 | retry_open: |
7b4b82bc | 1715 | pr_debug2("sys_perf_event_open: pid %d cpu %d group_fd %d flags %#lx", |
e3e1a54f AH |
1716 | pid, cpus->map[cpu], group_fd, flags); |
1717 | ||
10213e2f JO |
1718 | test_attr__ready(); |
1719 | ||
83c2e4f3 JO |
1720 | fd = sys_perf_event_open(&evsel->attr, pid, cpus->map[cpu], |
1721 | group_fd, flags); | |
1722 | ||
1723 | FD(evsel, cpu, thread) = fd; | |
1724 | ||
1725 | if (fd < 0) { | |
727ab04e | 1726 | err = -errno; |
a359c17a JO |
1727 | |
1728 | if (ignore_missing_thread(evsel, threads, thread, err)) { | |
1729 | /* | |
1730 | * We just removed 1 thread, so take a step | |
1731 | * back on thread index and lower the upper | |
1732 | * nthreads limit. | |
1733 | */ | |
1734 | nthreads--; | |
1735 | thread--; | |
1736 | ||
1737 | /* ... and pretend like nothing have happened. */ | |
1738 | err = 0; | |
1739 | continue; | |
1740 | } | |
1741 | ||
7b4b82bc | 1742 | pr_debug2("\nsys_perf_event_open failed, error %d\n", |
f852fd62 | 1743 | err); |
594ac61a | 1744 | goto try_fallback; |
727ab04e | 1745 | } |
1f45b1d4 | 1746 | |
83c2e4f3 | 1747 | pr_debug2(" = %d\n", fd); |
7b4b82bc | 1748 | |
1f45b1d4 | 1749 | if (evsel->bpf_fd >= 0) { |
83c2e4f3 | 1750 | int evt_fd = fd; |
1f45b1d4 WN |
1751 | int bpf_fd = evsel->bpf_fd; |
1752 | ||
1753 | err = ioctl(evt_fd, | |
1754 | PERF_EVENT_IOC_SET_BPF, | |
1755 | bpf_fd); | |
1756 | if (err && errno != EEXIST) { | |
1757 | pr_err("failed to attach bpf fd %d: %s\n", | |
1758 | bpf_fd, strerror(errno)); | |
1759 | err = -EINVAL; | |
1760 | goto out_close; | |
1761 | } | |
1762 | } | |
1763 | ||
bec19672 | 1764 | set_rlimit = NO_CHANGE; |
814c8c38 PZ |
1765 | |
1766 | /* | |
1767 | * If we succeeded but had to kill clockid, fail and | |
1768 | * have perf_evsel__open_strerror() print us a nice | |
1769 | * error. | |
1770 | */ | |
1771 | if (perf_missing_features.clockid || | |
1772 | perf_missing_features.clockid_wrong) { | |
1773 | err = -EINVAL; | |
1774 | goto out_close; | |
1775 | } | |
0252208e | 1776 | } |
48290609 ACM |
1777 | } |
1778 | ||
1779 | return 0; | |
1780 | ||
594ac61a | 1781 | try_fallback: |
bec19672 AK |
1782 | /* |
1783 | * perf stat needs between 5 and 22 fds per CPU. When we run out | |
1784 | * of them try to increase the limits. | |
1785 | */ | |
1786 | if (err == -EMFILE && set_rlimit < INCREASED_MAX) { | |
1787 | struct rlimit l; | |
1788 | int old_errno = errno; | |
1789 | ||
1790 | if (getrlimit(RLIMIT_NOFILE, &l) == 0) { | |
1791 | if (set_rlimit == NO_CHANGE) | |
1792 | l.rlim_cur = l.rlim_max; | |
1793 | else { | |
1794 | l.rlim_cur = l.rlim_max + 1000; | |
1795 | l.rlim_max = l.rlim_cur; | |
1796 | } | |
1797 | if (setrlimit(RLIMIT_NOFILE, &l) == 0) { | |
1798 | set_rlimit++; | |
1799 | errno = old_errno; | |
1800 | goto retry_open; | |
1801 | } | |
1802 | } | |
1803 | errno = old_errno; | |
1804 | } | |
1805 | ||
594ac61a ACM |
1806 | if (err != -EINVAL || cpu > 0 || thread > 0) |
1807 | goto out_close; | |
1808 | ||
814c8c38 PZ |
1809 | /* |
1810 | * Must probe features in the order they were added to the | |
1811 | * perf_event_attr interface. | |
1812 | */ | |
7da36e94 ACM |
1813 | if (!perf_missing_features.write_backward && evsel->attr.write_backward) { |
1814 | perf_missing_features.write_backward = true; | |
2b04e0f8 | 1815 | pr_debug2("switching off write_backward\n"); |
32a951b4 | 1816 | goto out_close; |
7da36e94 | 1817 | } else if (!perf_missing_features.clockid_wrong && evsel->attr.use_clockid) { |
814c8c38 | 1818 | perf_missing_features.clockid_wrong = true; |
2b04e0f8 | 1819 | pr_debug2("switching off clockid\n"); |
814c8c38 PZ |
1820 | goto fallback_missing_features; |
1821 | } else if (!perf_missing_features.clockid && evsel->attr.use_clockid) { | |
1822 | perf_missing_features.clockid = true; | |
2b04e0f8 | 1823 | pr_debug2("switching off use_clockid\n"); |
814c8c38 PZ |
1824 | goto fallback_missing_features; |
1825 | } else if (!perf_missing_features.cloexec && (flags & PERF_FLAG_FD_CLOEXEC)) { | |
57480d2c | 1826 | perf_missing_features.cloexec = true; |
2b04e0f8 | 1827 | pr_debug2("switching off cloexec flag\n"); |
57480d2c YD |
1828 | goto fallback_missing_features; |
1829 | } else if (!perf_missing_features.mmap2 && evsel->attr.mmap2) { | |
5c5e854b | 1830 | perf_missing_features.mmap2 = true; |
2b04e0f8 | 1831 | pr_debug2("switching off mmap2\n"); |
5c5e854b SE |
1832 | goto fallback_missing_features; |
1833 | } else if (!perf_missing_features.exclude_guest && | |
1834 | (evsel->attr.exclude_guest || evsel->attr.exclude_host)) { | |
594ac61a | 1835 | perf_missing_features.exclude_guest = true; |
2b04e0f8 | 1836 | pr_debug2("switching off exclude_guest, exclude_host\n"); |
594ac61a ACM |
1837 | goto fallback_missing_features; |
1838 | } else if (!perf_missing_features.sample_id_all) { | |
1839 | perf_missing_features.sample_id_all = true; | |
2b04e0f8 | 1840 | pr_debug2("switching off sample_id_all\n"); |
594ac61a | 1841 | goto retry_sample_id; |
bd0f8895 AK |
1842 | } else if (!perf_missing_features.lbr_flags && |
1843 | (evsel->attr.branch_sample_type & | |
1844 | (PERF_SAMPLE_BRANCH_NO_CYCLES | | |
1845 | PERF_SAMPLE_BRANCH_NO_FLAGS))) { | |
1846 | perf_missing_features.lbr_flags = true; | |
2b04e0f8 | 1847 | pr_debug2("switching off branch sample type no (cycles/flags)\n"); |
bd0f8895 | 1848 | goto fallback_missing_features; |
82bf311e JO |
1849 | } else if (!perf_missing_features.group_read && |
1850 | evsel->attr.inherit && | |
1851 | (evsel->attr.read_format & PERF_FORMAT_GROUP)) { | |
1852 | perf_missing_features.group_read = true; | |
1853 | pr_debug2("switching off group read\n"); | |
1854 | goto fallback_missing_features; | |
594ac61a | 1855 | } |
48290609 | 1856 | out_close: |
0252208e ACM |
1857 | do { |
1858 | while (--thread >= 0) { | |
1859 | close(FD(evsel, cpu, thread)); | |
1860 | FD(evsel, cpu, thread) = -1; | |
1861 | } | |
bf8e8f4b | 1862 | thread = nthreads; |
0252208e | 1863 | } while (--cpu >= 0); |
727ab04e ACM |
1864 | return err; |
1865 | } | |
1866 | ||
475fb533 | 1867 | void perf_evsel__close(struct perf_evsel *evsel) |
727ab04e ACM |
1868 | { |
1869 | if (evsel->fd == NULL) | |
1870 | return; | |
1871 | ||
475fb533 | 1872 | perf_evsel__close_fd(evsel); |
727ab04e | 1873 | perf_evsel__free_fd(evsel); |
48290609 ACM |
1874 | } |
1875 | ||
f08199d3 | 1876 | int perf_evsel__open_per_cpu(struct perf_evsel *evsel, |
6a4bb04c | 1877 | struct cpu_map *cpus) |
48290609 | 1878 | { |
c24ae6d9 | 1879 | return perf_evsel__open(evsel, cpus, NULL); |
0252208e | 1880 | } |
48290609 | 1881 | |
f08199d3 | 1882 | int perf_evsel__open_per_thread(struct perf_evsel *evsel, |
6a4bb04c | 1883 | struct thread_map *threads) |
0252208e | 1884 | { |
c24ae6d9 | 1885 | return perf_evsel__open(evsel, NULL, threads); |
48290609 | 1886 | } |
70082dd9 | 1887 | |
0807d2d8 ACM |
1888 | static int perf_evsel__parse_id_sample(const struct perf_evsel *evsel, |
1889 | const union perf_event *event, | |
1890 | struct perf_sample *sample) | |
d0dd74e8 | 1891 | { |
0807d2d8 | 1892 | u64 type = evsel->attr.sample_type; |
d0dd74e8 | 1893 | const u64 *array = event->sample.array; |
0807d2d8 | 1894 | bool swapped = evsel->needs_swap; |
37073f9e | 1895 | union u64_swap u; |
d0dd74e8 ACM |
1896 | |
1897 | array += ((event->header.size - | |
1898 | sizeof(event->header)) / sizeof(u64)) - 1; | |
1899 | ||
75562573 AH |
1900 | if (type & PERF_SAMPLE_IDENTIFIER) { |
1901 | sample->id = *array; | |
1902 | array--; | |
1903 | } | |
1904 | ||
d0dd74e8 | 1905 | if (type & PERF_SAMPLE_CPU) { |
37073f9e JO |
1906 | u.val64 = *array; |
1907 | if (swapped) { | |
1908 | /* undo swap of u64, then swap on individual u32s */ | |
1909 | u.val64 = bswap_64(u.val64); | |
1910 | u.val32[0] = bswap_32(u.val32[0]); | |
1911 | } | |
1912 | ||
1913 | sample->cpu = u.val32[0]; | |
d0dd74e8 ACM |
1914 | array--; |
1915 | } | |
1916 | ||
1917 | if (type & PERF_SAMPLE_STREAM_ID) { | |
1918 | sample->stream_id = *array; | |
1919 | array--; | |
1920 | } | |
1921 | ||
1922 | if (type & PERF_SAMPLE_ID) { | |
1923 | sample->id = *array; | |
1924 | array--; | |
1925 | } | |
1926 | ||
1927 | if (type & PERF_SAMPLE_TIME) { | |
1928 | sample->time = *array; | |
1929 | array--; | |
1930 | } | |
1931 | ||
1932 | if (type & PERF_SAMPLE_TID) { | |
37073f9e JO |
1933 | u.val64 = *array; |
1934 | if (swapped) { | |
1935 | /* undo swap of u64, then swap on individual u32s */ | |
1936 | u.val64 = bswap_64(u.val64); | |
1937 | u.val32[0] = bswap_32(u.val32[0]); | |
1938 | u.val32[1] = bswap_32(u.val32[1]); | |
1939 | } | |
1940 | ||
1941 | sample->pid = u.val32[0]; | |
1942 | sample->tid = u.val32[1]; | |
dd44bc6b | 1943 | array--; |
d0dd74e8 ACM |
1944 | } |
1945 | ||
1946 | return 0; | |
1947 | } | |
1948 | ||
03b6ea9b AH |
1949 | static inline bool overflow(const void *endp, u16 max_size, const void *offset, |
1950 | u64 size) | |
98e1da90 | 1951 | { |
03b6ea9b AH |
1952 | return size > max_size || offset + size > endp; |
1953 | } | |
98e1da90 | 1954 | |
03b6ea9b AH |
1955 | #define OVERFLOW_CHECK(offset, size, max_size) \ |
1956 | do { \ | |
1957 | if (overflow(endp, (max_size), (offset), (size))) \ | |
1958 | return -EFAULT; \ | |
1959 | } while (0) | |
98e1da90 | 1960 | |
03b6ea9b AH |
1961 | #define OVERFLOW_CHECK_u64(offset) \ |
1962 | OVERFLOW_CHECK(offset, sizeof(u64), sizeof(u64)) | |
98e1da90 | 1963 | |
a3f698fe | 1964 | int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, |
0807d2d8 | 1965 | struct perf_sample *data) |
d0dd74e8 | 1966 | { |
a3f698fe | 1967 | u64 type = evsel->attr.sample_type; |
0807d2d8 | 1968 | bool swapped = evsel->needs_swap; |
d0dd74e8 | 1969 | const u64 *array; |
03b6ea9b AH |
1970 | u16 max_size = event->header.size; |
1971 | const void *endp = (void *)event + max_size; | |
1972 | u64 sz; | |
d0dd74e8 | 1973 | |
936be503 DA |
1974 | /* |
1975 | * used for cross-endian analysis. See git commit 65014ab3 | |
1976 | * for why this goofiness is needed. | |
1977 | */ | |
6a11f92e | 1978 | union u64_swap u; |
936be503 | 1979 | |
f3bda2c9 | 1980 | memset(data, 0, sizeof(*data)); |
d0dd74e8 ACM |
1981 | data->cpu = data->pid = data->tid = -1; |
1982 | data->stream_id = data->id = data->time = -1ULL; | |
bc529086 | 1983 | data->period = evsel->attr.sample_period; |
473398a2 | 1984 | data->cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
d0dd74e8 ACM |
1985 | |
1986 | if (event->header.type != PERF_RECORD_SAMPLE) { | |
a3f698fe | 1987 | if (!evsel->attr.sample_id_all) |
d0dd74e8 | 1988 | return 0; |
0807d2d8 | 1989 | return perf_evsel__parse_id_sample(evsel, event, data); |
d0dd74e8 ACM |
1990 | } |
1991 | ||
1992 | array = event->sample.array; | |
1993 | ||
03b6ea9b AH |
1994 | /* |
1995 | * The evsel's sample_size is based on PERF_SAMPLE_MASK which includes | |
1996 | * up to PERF_SAMPLE_PERIOD. After that overflow() must be used to | |
1997 | * check the format does not go past the end of the event. | |
1998 | */ | |
a3f698fe | 1999 | if (evsel->sample_size + sizeof(event->header) > event->header.size) |
a2854124 FW |
2000 | return -EFAULT; |
2001 | ||
75562573 AH |
2002 | data->id = -1ULL; |
2003 | if (type & PERF_SAMPLE_IDENTIFIER) { | |
2004 | data->id = *array; | |
2005 | array++; | |
2006 | } | |
2007 | ||
d0dd74e8 | 2008 | if (type & PERF_SAMPLE_IP) { |
ef89325f | 2009 | data->ip = *array; |
d0dd74e8 ACM |
2010 | array++; |
2011 | } | |
2012 | ||
2013 | if (type & PERF_SAMPLE_TID) { | |
936be503 DA |
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 | data->pid = u.val32[0]; | |
2023 | data->tid = u.val32[1]; | |
d0dd74e8 ACM |
2024 | array++; |
2025 | } | |
2026 | ||
2027 | if (type & PERF_SAMPLE_TIME) { | |
2028 | data->time = *array; | |
2029 | array++; | |
2030 | } | |
2031 | ||
7cec0922 | 2032 | data->addr = 0; |
d0dd74e8 ACM |
2033 | if (type & PERF_SAMPLE_ADDR) { |
2034 | data->addr = *array; | |
2035 | array++; | |
2036 | } | |
2037 | ||
d0dd74e8 ACM |
2038 | if (type & PERF_SAMPLE_ID) { |
2039 | data->id = *array; | |
2040 | array++; | |
2041 | } | |
2042 | ||
2043 | if (type & PERF_SAMPLE_STREAM_ID) { | |
2044 | data->stream_id = *array; | |
2045 | array++; | |
2046 | } | |
2047 | ||
2048 | if (type & PERF_SAMPLE_CPU) { | |
936be503 DA |
2049 | |
2050 | u.val64 = *array; | |
2051 | if (swapped) { | |
2052 | /* undo swap of u64, then swap on individual u32s */ | |
2053 | u.val64 = bswap_64(u.val64); | |
2054 | u.val32[0] = bswap_32(u.val32[0]); | |
2055 | } | |
2056 | ||
2057 | data->cpu = u.val32[0]; | |
d0dd74e8 ACM |
2058 | array++; |
2059 | } | |
2060 | ||
2061 | if (type & PERF_SAMPLE_PERIOD) { | |
2062 | data->period = *array; | |
2063 | array++; | |
2064 | } | |
2065 | ||
2066 | if (type & PERF_SAMPLE_READ) { | |
9ede473c JO |
2067 | u64 read_format = evsel->attr.read_format; |
2068 | ||
03b6ea9b | 2069 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
2070 | if (read_format & PERF_FORMAT_GROUP) |
2071 | data->read.group.nr = *array; | |
2072 | else | |
2073 | data->read.one.value = *array; | |
2074 | ||
2075 | array++; | |
2076 | ||
2077 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) { | |
03b6ea9b | 2078 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
2079 | data->read.time_enabled = *array; |
2080 | array++; | |
2081 | } | |
2082 | ||
2083 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) { | |
03b6ea9b | 2084 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
2085 | data->read.time_running = *array; |
2086 | array++; | |
2087 | } | |
2088 | ||
2089 | /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ | |
2090 | if (read_format & PERF_FORMAT_GROUP) { | |
03b6ea9b AH |
2091 | const u64 max_group_nr = UINT64_MAX / |
2092 | sizeof(struct sample_read_value); | |
2093 | ||
2094 | if (data->read.group.nr > max_group_nr) | |
2095 | return -EFAULT; | |
2096 | sz = data->read.group.nr * | |
2097 | sizeof(struct sample_read_value); | |
2098 | OVERFLOW_CHECK(array, sz, max_size); | |
2099 | data->read.group.values = | |
2100 | (struct sample_read_value *)array; | |
2101 | array = (void *)array + sz; | |
9ede473c | 2102 | } else { |
03b6ea9b | 2103 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
2104 | data->read.one.id = *array; |
2105 | array++; | |
2106 | } | |
d0dd74e8 ACM |
2107 | } |
2108 | ||
2109 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
03b6ea9b | 2110 | const u64 max_callchain_nr = UINT64_MAX / sizeof(u64); |
98e1da90 | 2111 | |
03b6ea9b AH |
2112 | OVERFLOW_CHECK_u64(array); |
2113 | data->callchain = (struct ip_callchain *)array++; | |
2114 | if (data->callchain->nr > max_callchain_nr) | |
98e1da90 | 2115 | return -EFAULT; |
03b6ea9b AH |
2116 | sz = data->callchain->nr * sizeof(u64); |
2117 | OVERFLOW_CHECK(array, sz, max_size); | |
2118 | array = (void *)array + sz; | |
d0dd74e8 ACM |
2119 | } |
2120 | ||
2121 | if (type & PERF_SAMPLE_RAW) { | |
03b6ea9b | 2122 | OVERFLOW_CHECK_u64(array); |
936be503 | 2123 | u.val64 = *array; |
f69d9d78 JO |
2124 | |
2125 | /* | |
2126 | * Undo swap of u64, then swap on individual u32s, | |
2127 | * get the size of the raw area and undo all of the | |
2128 | * swap. The pevent interface handles endianity by | |
2129 | * itself. | |
2130 | */ | |
2131 | if (swapped) { | |
936be503 DA |
2132 | u.val64 = bswap_64(u.val64); |
2133 | u.val32[0] = bswap_32(u.val32[0]); | |
2134 | u.val32[1] = bswap_32(u.val32[1]); | |
2135 | } | |
936be503 | 2136 | data->raw_size = u.val32[0]; |
f69d9d78 JO |
2137 | |
2138 | /* | |
2139 | * The raw data is aligned on 64bits including the | |
2140 | * u32 size, so it's safe to use mem_bswap_64. | |
2141 | */ | |
2142 | if (swapped) | |
2143 | mem_bswap_64((void *) array, data->raw_size); | |
2144 | ||
03b6ea9b | 2145 | array = (void *)array + sizeof(u32); |
98e1da90 | 2146 | |
03b6ea9b AH |
2147 | OVERFLOW_CHECK(array, data->raw_size, max_size); |
2148 | data->raw_data = (void *)array; | |
2149 | array = (void *)array + data->raw_size; | |
d0dd74e8 ACM |
2150 | } |
2151 | ||
b5387528 | 2152 | if (type & PERF_SAMPLE_BRANCH_STACK) { |
03b6ea9b AH |
2153 | const u64 max_branch_nr = UINT64_MAX / |
2154 | sizeof(struct branch_entry); | |
b5387528 | 2155 | |
03b6ea9b AH |
2156 | OVERFLOW_CHECK_u64(array); |
2157 | data->branch_stack = (struct branch_stack *)array++; | |
b5387528 | 2158 | |
03b6ea9b AH |
2159 | if (data->branch_stack->nr > max_branch_nr) |
2160 | return -EFAULT; | |
b5387528 | 2161 | sz = data->branch_stack->nr * sizeof(struct branch_entry); |
03b6ea9b AH |
2162 | OVERFLOW_CHECK(array, sz, max_size); |
2163 | array = (void *)array + sz; | |
b5387528 | 2164 | } |
0f6a3015 JO |
2165 | |
2166 | if (type & PERF_SAMPLE_REGS_USER) { | |
03b6ea9b | 2167 | OVERFLOW_CHECK_u64(array); |
5b95a4a3 AH |
2168 | data->user_regs.abi = *array; |
2169 | array++; | |
0f6a3015 | 2170 | |
5b95a4a3 | 2171 | if (data->user_regs.abi) { |
352ea45a | 2172 | u64 mask = evsel->attr.sample_regs_user; |
03b6ea9b | 2173 | |
352ea45a | 2174 | sz = hweight_long(mask) * sizeof(u64); |
03b6ea9b | 2175 | OVERFLOW_CHECK(array, sz, max_size); |
352ea45a | 2176 | data->user_regs.mask = mask; |
0f6a3015 | 2177 | data->user_regs.regs = (u64 *)array; |
03b6ea9b | 2178 | array = (void *)array + sz; |
0f6a3015 JO |
2179 | } |
2180 | } | |
2181 | ||
2182 | if (type & PERF_SAMPLE_STACK_USER) { | |
03b6ea9b AH |
2183 | OVERFLOW_CHECK_u64(array); |
2184 | sz = *array++; | |
0f6a3015 JO |
2185 | |
2186 | data->user_stack.offset = ((char *)(array - 1) | |
2187 | - (char *) event); | |
2188 | ||
03b6ea9b | 2189 | if (!sz) { |
0f6a3015 JO |
2190 | data->user_stack.size = 0; |
2191 | } else { | |
03b6ea9b | 2192 | OVERFLOW_CHECK(array, sz, max_size); |
0f6a3015 | 2193 | data->user_stack.data = (char *)array; |
03b6ea9b AH |
2194 | array = (void *)array + sz; |
2195 | OVERFLOW_CHECK_u64(array); | |
54bd2692 | 2196 | data->user_stack.size = *array++; |
a65cb4b9 JO |
2197 | if (WARN_ONCE(data->user_stack.size > sz, |
2198 | "user stack dump failure\n")) | |
2199 | return -EFAULT; | |
0f6a3015 JO |
2200 | } |
2201 | } | |
2202 | ||
05484298 | 2203 | if (type & PERF_SAMPLE_WEIGHT) { |
03b6ea9b | 2204 | OVERFLOW_CHECK_u64(array); |
05484298 AK |
2205 | data->weight = *array; |
2206 | array++; | |
2207 | } | |
2208 | ||
98a3b32c SE |
2209 | data->data_src = PERF_MEM_DATA_SRC_NONE; |
2210 | if (type & PERF_SAMPLE_DATA_SRC) { | |
03b6ea9b | 2211 | OVERFLOW_CHECK_u64(array); |
98a3b32c SE |
2212 | data->data_src = *array; |
2213 | array++; | |
2214 | } | |
2215 | ||
475eeab9 AK |
2216 | data->transaction = 0; |
2217 | if (type & PERF_SAMPLE_TRANSACTION) { | |
87b95524 | 2218 | OVERFLOW_CHECK_u64(array); |
475eeab9 AK |
2219 | data->transaction = *array; |
2220 | array++; | |
2221 | } | |
2222 | ||
6a21c0b5 SE |
2223 | data->intr_regs.abi = PERF_SAMPLE_REGS_ABI_NONE; |
2224 | if (type & PERF_SAMPLE_REGS_INTR) { | |
2225 | OVERFLOW_CHECK_u64(array); | |
2226 | data->intr_regs.abi = *array; | |
2227 | array++; | |
2228 | ||
2229 | if (data->intr_regs.abi != PERF_SAMPLE_REGS_ABI_NONE) { | |
2230 | u64 mask = evsel->attr.sample_regs_intr; | |
2231 | ||
2232 | sz = hweight_long(mask) * sizeof(u64); | |
2233 | OVERFLOW_CHECK(array, sz, max_size); | |
2234 | data->intr_regs.mask = mask; | |
2235 | data->intr_regs.regs = (u64 *)array; | |
2236 | array = (void *)array + sz; | |
2237 | } | |
2238 | } | |
2239 | ||
3b0a5daa KL |
2240 | data->phys_addr = 0; |
2241 | if (type & PERF_SAMPLE_PHYS_ADDR) { | |
2242 | data->phys_addr = *array; | |
2243 | array++; | |
2244 | } | |
2245 | ||
d0dd74e8 ACM |
2246 | return 0; |
2247 | } | |
74eec26f | 2248 | |
b1cf6f65 | 2249 | size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type, |
352ea45a | 2250 | u64 read_format) |
b1cf6f65 AH |
2251 | { |
2252 | size_t sz, result = sizeof(struct sample_event); | |
2253 | ||
2254 | if (type & PERF_SAMPLE_IDENTIFIER) | |
2255 | result += sizeof(u64); | |
2256 | ||
2257 | if (type & PERF_SAMPLE_IP) | |
2258 | result += sizeof(u64); | |
2259 | ||
2260 | if (type & PERF_SAMPLE_TID) | |
2261 | result += sizeof(u64); | |
2262 | ||
2263 | if (type & PERF_SAMPLE_TIME) | |
2264 | result += sizeof(u64); | |
2265 | ||
2266 | if (type & PERF_SAMPLE_ADDR) | |
2267 | result += sizeof(u64); | |
2268 | ||
2269 | if (type & PERF_SAMPLE_ID) | |
2270 | result += sizeof(u64); | |
2271 | ||
2272 | if (type & PERF_SAMPLE_STREAM_ID) | |
2273 | result += sizeof(u64); | |
2274 | ||
2275 | if (type & PERF_SAMPLE_CPU) | |
2276 | result += sizeof(u64); | |
2277 | ||
2278 | if (type & PERF_SAMPLE_PERIOD) | |
2279 | result += sizeof(u64); | |
2280 | ||
2281 | if (type & PERF_SAMPLE_READ) { | |
2282 | result += sizeof(u64); | |
2283 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) | |
2284 | result += sizeof(u64); | |
2285 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) | |
2286 | result += sizeof(u64); | |
2287 | /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ | |
2288 | if (read_format & PERF_FORMAT_GROUP) { | |
2289 | sz = sample->read.group.nr * | |
2290 | sizeof(struct sample_read_value); | |
2291 | result += sz; | |
2292 | } else { | |
2293 | result += sizeof(u64); | |
2294 | } | |
2295 | } | |
2296 | ||
2297 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
2298 | sz = (sample->callchain->nr + 1) * sizeof(u64); | |
2299 | result += sz; | |
2300 | } | |
2301 | ||
2302 | if (type & PERF_SAMPLE_RAW) { | |
2303 | result += sizeof(u32); | |
2304 | result += sample->raw_size; | |
2305 | } | |
2306 | ||
2307 | if (type & PERF_SAMPLE_BRANCH_STACK) { | |
2308 | sz = sample->branch_stack->nr * sizeof(struct branch_entry); | |
2309 | sz += sizeof(u64); | |
2310 | result += sz; | |
2311 | } | |
2312 | ||
2313 | if (type & PERF_SAMPLE_REGS_USER) { | |
2314 | if (sample->user_regs.abi) { | |
2315 | result += sizeof(u64); | |
352ea45a | 2316 | sz = hweight_long(sample->user_regs.mask) * sizeof(u64); |
b1cf6f65 AH |
2317 | result += sz; |
2318 | } else { | |
2319 | result += sizeof(u64); | |
2320 | } | |
2321 | } | |
2322 | ||
2323 | if (type & PERF_SAMPLE_STACK_USER) { | |
2324 | sz = sample->user_stack.size; | |
2325 | result += sizeof(u64); | |
2326 | if (sz) { | |
2327 | result += sz; | |
2328 | result += sizeof(u64); | |
2329 | } | |
2330 | } | |
2331 | ||
2332 | if (type & PERF_SAMPLE_WEIGHT) | |
2333 | result += sizeof(u64); | |
2334 | ||
2335 | if (type & PERF_SAMPLE_DATA_SRC) | |
2336 | result += sizeof(u64); | |
2337 | ||
42d88910 AH |
2338 | if (type & PERF_SAMPLE_TRANSACTION) |
2339 | result += sizeof(u64); | |
2340 | ||
6a21c0b5 SE |
2341 | if (type & PERF_SAMPLE_REGS_INTR) { |
2342 | if (sample->intr_regs.abi) { | |
2343 | result += sizeof(u64); | |
2344 | sz = hweight_long(sample->intr_regs.mask) * sizeof(u64); | |
2345 | result += sz; | |
2346 | } else { | |
2347 | result += sizeof(u64); | |
2348 | } | |
2349 | } | |
2350 | ||
3b0a5daa KL |
2351 | if (type & PERF_SAMPLE_PHYS_ADDR) |
2352 | result += sizeof(u64); | |
2353 | ||
b1cf6f65 AH |
2354 | return result; |
2355 | } | |
2356 | ||
74eec26f | 2357 | int perf_event__synthesize_sample(union perf_event *event, u64 type, |
352ea45a | 2358 | u64 read_format, |
74eec26f AV |
2359 | const struct perf_sample *sample, |
2360 | bool swapped) | |
2361 | { | |
2362 | u64 *array; | |
d03f2170 | 2363 | size_t sz; |
74eec26f AV |
2364 | /* |
2365 | * used for cross-endian analysis. See git commit 65014ab3 | |
2366 | * for why this goofiness is needed. | |
2367 | */ | |
6a11f92e | 2368 | union u64_swap u; |
74eec26f AV |
2369 | |
2370 | array = event->sample.array; | |
2371 | ||
75562573 AH |
2372 | if (type & PERF_SAMPLE_IDENTIFIER) { |
2373 | *array = sample->id; | |
2374 | array++; | |
2375 | } | |
2376 | ||
74eec26f | 2377 | if (type & PERF_SAMPLE_IP) { |
ef89325f | 2378 | *array = sample->ip; |
74eec26f AV |
2379 | array++; |
2380 | } | |
2381 | ||
2382 | if (type & PERF_SAMPLE_TID) { | |
2383 | u.val32[0] = sample->pid; | |
2384 | u.val32[1] = sample->tid; | |
2385 | if (swapped) { | |
2386 | /* | |
a3f698fe | 2387 | * Inverse of what is done in perf_evsel__parse_sample |
74eec26f AV |
2388 | */ |
2389 | u.val32[0] = bswap_32(u.val32[0]); | |
2390 | u.val32[1] = bswap_32(u.val32[1]); | |
2391 | u.val64 = bswap_64(u.val64); | |
2392 | } | |
2393 | ||
2394 | *array = u.val64; | |
2395 | array++; | |
2396 | } | |
2397 | ||
2398 | if (type & PERF_SAMPLE_TIME) { | |
2399 | *array = sample->time; | |
2400 | array++; | |
2401 | } | |
2402 | ||
2403 | if (type & PERF_SAMPLE_ADDR) { | |
2404 | *array = sample->addr; | |
2405 | array++; | |
2406 | } | |
2407 | ||
2408 | if (type & PERF_SAMPLE_ID) { | |
2409 | *array = sample->id; | |
2410 | array++; | |
2411 | } | |
2412 | ||
2413 | if (type & PERF_SAMPLE_STREAM_ID) { | |
2414 | *array = sample->stream_id; | |
2415 | array++; | |
2416 | } | |
2417 | ||
2418 | if (type & PERF_SAMPLE_CPU) { | |
2419 | u.val32[0] = sample->cpu; | |
2420 | if (swapped) { | |
2421 | /* | |
a3f698fe | 2422 | * Inverse of what is done in perf_evsel__parse_sample |
74eec26f AV |
2423 | */ |
2424 | u.val32[0] = bswap_32(u.val32[0]); | |
2425 | u.val64 = bswap_64(u.val64); | |
2426 | } | |
2427 | *array = u.val64; | |
2428 | array++; | |
2429 | } | |
2430 | ||
2431 | if (type & PERF_SAMPLE_PERIOD) { | |
2432 | *array = sample->period; | |
2433 | array++; | |
2434 | } | |
2435 | ||
d03f2170 AH |
2436 | if (type & PERF_SAMPLE_READ) { |
2437 | if (read_format & PERF_FORMAT_GROUP) | |
2438 | *array = sample->read.group.nr; | |
2439 | else | |
2440 | *array = sample->read.one.value; | |
2441 | array++; | |
2442 | ||
2443 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) { | |
2444 | *array = sample->read.time_enabled; | |
2445 | array++; | |
2446 | } | |
2447 | ||
2448 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) { | |
2449 | *array = sample->read.time_running; | |
2450 | array++; | |
2451 | } | |
2452 | ||
2453 | /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ | |
2454 | if (read_format & PERF_FORMAT_GROUP) { | |
2455 | sz = sample->read.group.nr * | |
2456 | sizeof(struct sample_read_value); | |
2457 | memcpy(array, sample->read.group.values, sz); | |
2458 | array = (void *)array + sz; | |
2459 | } else { | |
2460 | *array = sample->read.one.id; | |
2461 | array++; | |
2462 | } | |
2463 | } | |
2464 | ||
2465 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
2466 | sz = (sample->callchain->nr + 1) * sizeof(u64); | |
2467 | memcpy(array, sample->callchain, sz); | |
2468 | array = (void *)array + sz; | |
2469 | } | |
2470 | ||
2471 | if (type & PERF_SAMPLE_RAW) { | |
2472 | u.val32[0] = sample->raw_size; | |
2473 | if (WARN_ONCE(swapped, | |
2474 | "Endianness of raw data not corrected!\n")) { | |
2475 | /* | |
2476 | * Inverse of what is done in perf_evsel__parse_sample | |
2477 | */ | |
2478 | u.val32[0] = bswap_32(u.val32[0]); | |
2479 | u.val32[1] = bswap_32(u.val32[1]); | |
2480 | u.val64 = bswap_64(u.val64); | |
2481 | } | |
2482 | *array = u.val64; | |
2483 | array = (void *)array + sizeof(u32); | |
2484 | ||
2485 | memcpy(array, sample->raw_data, sample->raw_size); | |
2486 | array = (void *)array + sample->raw_size; | |
2487 | } | |
2488 | ||
2489 | if (type & PERF_SAMPLE_BRANCH_STACK) { | |
2490 | sz = sample->branch_stack->nr * sizeof(struct branch_entry); | |
2491 | sz += sizeof(u64); | |
2492 | memcpy(array, sample->branch_stack, sz); | |
2493 | array = (void *)array + sz; | |
2494 | } | |
2495 | ||
2496 | if (type & PERF_SAMPLE_REGS_USER) { | |
2497 | if (sample->user_regs.abi) { | |
2498 | *array++ = sample->user_regs.abi; | |
352ea45a | 2499 | sz = hweight_long(sample->user_regs.mask) * sizeof(u64); |
d03f2170 AH |
2500 | memcpy(array, sample->user_regs.regs, sz); |
2501 | array = (void *)array + sz; | |
2502 | } else { | |
2503 | *array++ = 0; | |
2504 | } | |
2505 | } | |
2506 | ||
2507 | if (type & PERF_SAMPLE_STACK_USER) { | |
2508 | sz = sample->user_stack.size; | |
2509 | *array++ = sz; | |
2510 | if (sz) { | |
2511 | memcpy(array, sample->user_stack.data, sz); | |
2512 | array = (void *)array + sz; | |
2513 | *array++ = sz; | |
2514 | } | |
2515 | } | |
2516 | ||
2517 | if (type & PERF_SAMPLE_WEIGHT) { | |
2518 | *array = sample->weight; | |
2519 | array++; | |
2520 | } | |
2521 | ||
2522 | if (type & PERF_SAMPLE_DATA_SRC) { | |
2523 | *array = sample->data_src; | |
2524 | array++; | |
2525 | } | |
2526 | ||
42d88910 AH |
2527 | if (type & PERF_SAMPLE_TRANSACTION) { |
2528 | *array = sample->transaction; | |
2529 | array++; | |
2530 | } | |
2531 | ||
6a21c0b5 SE |
2532 | if (type & PERF_SAMPLE_REGS_INTR) { |
2533 | if (sample->intr_regs.abi) { | |
2534 | *array++ = sample->intr_regs.abi; | |
2535 | sz = hweight_long(sample->intr_regs.mask) * sizeof(u64); | |
2536 | memcpy(array, sample->intr_regs.regs, sz); | |
2537 | array = (void *)array + sz; | |
2538 | } else { | |
2539 | *array++ = 0; | |
2540 | } | |
2541 | } | |
2542 | ||
3b0a5daa KL |
2543 | if (type & PERF_SAMPLE_PHYS_ADDR) { |
2544 | *array = sample->phys_addr; | |
2545 | array++; | |
2546 | } | |
2547 | ||
74eec26f AV |
2548 | return 0; |
2549 | } | |
5555ded4 | 2550 | |
efd2b924 ACM |
2551 | struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name) |
2552 | { | |
2553 | return pevent_find_field(evsel->tp_format, name); | |
2554 | } | |
2555 | ||
5d2074ea | 2556 | void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample, |
5555ded4 ACM |
2557 | const char *name) |
2558 | { | |
efd2b924 | 2559 | struct format_field *field = perf_evsel__field(evsel, name); |
5555ded4 ACM |
2560 | int offset; |
2561 | ||
efd2b924 ACM |
2562 | if (!field) |
2563 | return NULL; | |
5555ded4 ACM |
2564 | |
2565 | offset = field->offset; | |
2566 | ||
2567 | if (field->flags & FIELD_IS_DYNAMIC) { | |
2568 | offset = *(int *)(sample->raw_data + field->offset); | |
2569 | offset &= 0xffff; | |
2570 | } | |
2571 | ||
2572 | return sample->raw_data + offset; | |
2573 | } | |
2574 | ||
90525176 ACM |
2575 | u64 format_field__intval(struct format_field *field, struct perf_sample *sample, |
2576 | bool needs_swap) | |
5555ded4 | 2577 | { |
e6b6f679 | 2578 | u64 value; |
90525176 | 2579 | void *ptr = sample->raw_data + field->offset; |
5555ded4 | 2580 | |
e6b6f679 ACM |
2581 | switch (field->size) { |
2582 | case 1: | |
2583 | return *(u8 *)ptr; | |
2584 | case 2: | |
2585 | value = *(u16 *)ptr; | |
2586 | break; | |
2587 | case 4: | |
2588 | value = *(u32 *)ptr; | |
2589 | break; | |
2590 | case 8: | |
e94eedab | 2591 | memcpy(&value, ptr, sizeof(u64)); |
e6b6f679 ACM |
2592 | break; |
2593 | default: | |
2594 | return 0; | |
2595 | } | |
2596 | ||
90525176 | 2597 | if (!needs_swap) |
e6b6f679 ACM |
2598 | return value; |
2599 | ||
2600 | switch (field->size) { | |
2601 | case 2: | |
2602 | return bswap_16(value); | |
2603 | case 4: | |
2604 | return bswap_32(value); | |
2605 | case 8: | |
2606 | return bswap_64(value); | |
2607 | default: | |
2608 | return 0; | |
2609 | } | |
2610 | ||
2611 | return 0; | |
5555ded4 | 2612 | } |
0698aedd | 2613 | |
90525176 ACM |
2614 | u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, |
2615 | const char *name) | |
2616 | { | |
2617 | struct format_field *field = perf_evsel__field(evsel, name); | |
2618 | ||
2619 | if (!field) | |
2620 | return 0; | |
2621 | ||
2622 | return field ? format_field__intval(field, sample, evsel->needs_swap) : 0; | |
2623 | } | |
2624 | ||
c0a54341 ACM |
2625 | bool perf_evsel__fallback(struct perf_evsel *evsel, int err, |
2626 | char *msg, size_t msgsize) | |
2627 | { | |
08094828 ACM |
2628 | int paranoid; |
2629 | ||
2b821cce | 2630 | if ((err == ENOENT || err == ENXIO || err == ENODEV) && |
c0a54341 ACM |
2631 | evsel->attr.type == PERF_TYPE_HARDWARE && |
2632 | evsel->attr.config == PERF_COUNT_HW_CPU_CYCLES) { | |
2633 | /* | |
2634 | * If it's cycles then fall back to hrtimer based | |
2635 | * cpu-clock-tick sw counter, which is always available even if | |
2636 | * no PMU support. | |
2637 | * | |
2638 | * PPC returns ENXIO until 2.6.37 (behavior changed with commit | |
2639 | * b0a873e). | |
2640 | */ | |
2641 | scnprintf(msg, msgsize, "%s", | |
2642 | "The cycles event is not supported, trying to fall back to cpu-clock-ticks"); | |
2643 | ||
2644 | evsel->attr.type = PERF_TYPE_SOFTWARE; | |
2645 | evsel->attr.config = PERF_COUNT_SW_CPU_CLOCK; | |
2646 | ||
04662523 | 2647 | zfree(&evsel->name); |
08094828 ACM |
2648 | return true; |
2649 | } else if (err == EACCES && !evsel->attr.exclude_kernel && | |
2650 | (paranoid = perf_event_paranoid()) > 1) { | |
2651 | const char *name = perf_evsel__name(evsel); | |
2652 | char *new_name; | |
2653 | ||
2654 | if (asprintf(&new_name, "%s%su", name, strchr(name, ':') ? "" : ":") < 0) | |
2655 | return false; | |
2656 | ||
2657 | if (evsel->name) | |
2658 | free(evsel->name); | |
2659 | evsel->name = new_name; | |
2660 | scnprintf(msg, msgsize, | |
2661 | "kernel.perf_event_paranoid=%d, trying to fall back to excluding kernel samples", paranoid); | |
2662 | evsel->attr.exclude_kernel = 1; | |
2663 | ||
c0a54341 ACM |
2664 | return true; |
2665 | } | |
2666 | ||
2667 | return false; | |
2668 | } | |
56e52e85 | 2669 | |
2157f6ee ACM |
2670 | static bool find_process(const char *name) |
2671 | { | |
2672 | size_t len = strlen(name); | |
2673 | DIR *dir; | |
2674 | struct dirent *d; | |
2675 | int ret = -1; | |
2676 | ||
2677 | dir = opendir(procfs__mountpoint()); | |
2678 | if (!dir) | |
2679 | return false; | |
2680 | ||
2681 | /* Walk through the directory. */ | |
2682 | while (ret && (d = readdir(dir)) != NULL) { | |
2683 | char path[PATH_MAX]; | |
2684 | char *data; | |
2685 | size_t size; | |
2686 | ||
2687 | if ((d->d_type != DT_DIR) || | |
2688 | !strcmp(".", d->d_name) || | |
2689 | !strcmp("..", d->d_name)) | |
2690 | continue; | |
2691 | ||
2692 | scnprintf(path, sizeof(path), "%s/%s/comm", | |
2693 | procfs__mountpoint(), d->d_name); | |
2694 | ||
2695 | if (filename__read_str(path, &data, &size)) | |
2696 | continue; | |
2697 | ||
2698 | ret = strncmp(name, data, len); | |
2699 | free(data); | |
2700 | } | |
2701 | ||
2702 | closedir(dir); | |
2703 | return ret ? false : true; | |
2704 | } | |
2705 | ||
602ad878 | 2706 | int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, |
56e52e85 ACM |
2707 | int err, char *msg, size_t size) |
2708 | { | |
6e81c74c | 2709 | char sbuf[STRERR_BUFSIZE]; |
32ccb130 | 2710 | int printed = 0; |
6e81c74c | 2711 | |
56e52e85 ACM |
2712 | switch (err) { |
2713 | case EPERM: | |
2714 | case EACCES: | |
32ccb130 JY |
2715 | if (err == EPERM) |
2716 | printed = scnprintf(msg, size, | |
2717 | "No permission to enable %s event.\n\n", | |
2718 | perf_evsel__name(evsel)); | |
2719 | ||
2720 | return scnprintf(msg + printed, size - printed, | |
3379e0c3 BH |
2721 | "You may not have permission to collect %sstats.\n\n" |
2722 | "Consider tweaking /proc/sys/kernel/perf_event_paranoid,\n" | |
2723 | "which controls use of the performance events system by\n" | |
2724 | "unprivileged users (without CAP_SYS_ADMIN).\n\n" | |
7d173913 | 2725 | "The current value is %d:\n\n" |
3379e0c3 | 2726 | " -1: Allow use of (almost) all events by all users\n" |
ac0bb6b7 KK |
2727 | " Ignore mlock limit after perf_event_mlock_kb without CAP_IPC_LOCK\n" |
2728 | ">= 0: Disallow ftrace function tracepoint by users without CAP_SYS_ADMIN\n" | |
2729 | " Disallow raw tracepoint access by users without CAP_SYS_ADMIN\n" | |
3379e0c3 | 2730 | ">= 1: Disallow CPU event access by users without CAP_SYS_ADMIN\n" |
d6195a6a ACM |
2731 | ">= 2: Disallow kernel profiling by users without CAP_SYS_ADMIN\n\n" |
2732 | "To make this setting permanent, edit /etc/sysctl.conf too, e.g.:\n\n" | |
2733 | " kernel.perf_event_paranoid = -1\n" , | |
7d173913 ACM |
2734 | target->system_wide ? "system-wide " : "", |
2735 | perf_event_paranoid()); | |
56e52e85 ACM |
2736 | case ENOENT: |
2737 | return scnprintf(msg, size, "The %s event is not supported.", | |
2738 | perf_evsel__name(evsel)); | |
2739 | case EMFILE: | |
2740 | return scnprintf(msg, size, "%s", | |
2741 | "Too many events are opened.\n" | |
18ffdfe8 JO |
2742 | "Probably the maximum number of open file descriptors has been reached.\n" |
2743 | "Hint: Try again after reducing the number of events.\n" | |
2744 | "Hint: Try increasing the limit with 'ulimit -n <limit>'"); | |
de46d526 ACM |
2745 | case ENOMEM: |
2746 | if ((evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) != 0 && | |
2747 | access("/proc/sys/kernel/perf_event_max_stack", F_OK) == 0) | |
2748 | return scnprintf(msg, size, | |
2749 | "Not enough memory to setup event with callchain.\n" | |
2750 | "Hint: Try tweaking /proc/sys/kernel/perf_event_max_stack\n" | |
2751 | "Hint: Current value: %d", sysctl_perf_event_max_stack); | |
2752 | break; | |
56e52e85 ACM |
2753 | case ENODEV: |
2754 | if (target->cpu_list) | |
2755 | return scnprintf(msg, size, "%s", | |
81d64f46 | 2756 | "No such device - did you specify an out-of-range profile CPU?"); |
56e52e85 ACM |
2757 | break; |
2758 | case EOPNOTSUPP: | |
dc89e75a VG |
2759 | if (evsel->attr.sample_period != 0) |
2760 | return scnprintf(msg, size, "%s", | |
2761 | "PMU Hardware doesn't support sampling/overflow-interrupts."); | |
56e52e85 ACM |
2762 | if (evsel->attr.precise_ip) |
2763 | return scnprintf(msg, size, "%s", | |
2764 | "\'precise\' request may not be supported. Try removing 'p' modifier."); | |
2765 | #if defined(__i386__) || defined(__x86_64__) | |
2766 | if (evsel->attr.type == PERF_TYPE_HARDWARE) | |
2767 | return scnprintf(msg, size, "%s", | |
2768 | "No hardware sampling interrupt available.\n" | |
2769 | "No APIC? If so then you can boot the kernel with the \"lapic\" boot parameter to force-enable it."); | |
2770 | #endif | |
2771 | break; | |
63914aca JO |
2772 | case EBUSY: |
2773 | if (find_process("oprofiled")) | |
2774 | return scnprintf(msg, size, | |
2775 | "The PMU counters are busy/taken by another profiler.\n" | |
2776 | "We found oprofile daemon running, please stop it and try again."); | |
2777 | break; | |
814c8c38 | 2778 | case EINVAL: |
32a951b4 | 2779 | if (evsel->attr.write_backward && perf_missing_features.write_backward) |
7da36e94 | 2780 | return scnprintf(msg, size, "Reading from overwrite event is not supported by this kernel."); |
814c8c38 PZ |
2781 | if (perf_missing_features.clockid) |
2782 | return scnprintf(msg, size, "clockid feature not supported."); | |
2783 | if (perf_missing_features.clockid_wrong) | |
2784 | return scnprintf(msg, size, "wrong clockid (%d).", clockid); | |
2785 | break; | |
56e52e85 ACM |
2786 | default: |
2787 | break; | |
2788 | } | |
2789 | ||
2790 | return scnprintf(msg, size, | |
6e81c74c | 2791 | "The sys_perf_event_open() syscall returned with %d (%s) for event (%s).\n" |
56e52e85 | 2792 | "/bin/dmesg may provide additional information.\n" |
81d64f46 | 2793 | "No CONFIG_PERF_EVENTS=y kernel support configured?", |
c8b5f2c9 | 2794 | err, str_error_r(err, sbuf, sizeof(sbuf)), |
6e81c74c | 2795 | perf_evsel__name(evsel)); |
56e52e85 | 2796 | } |
f4e47f9f RB |
2797 | |
2798 | char *perf_evsel__env_arch(struct perf_evsel *evsel) | |
2799 | { | |
2800 | if (evsel && evsel->evlist && evsel->evlist->env) | |
2801 | return evsel->evlist->env->arch; | |
2802 | return NULL; | |
2803 | } | |
69fb09f6 JY |
2804 | |
2805 | char *perf_evsel__env_cpuid(struct perf_evsel *evsel) | |
2806 | { | |
2807 | if (evsel && evsel->evlist && evsel->evlist->env) | |
2808 | return evsel->evlist->env->cpuid; | |
2809 | return NULL; | |
2810 | } |