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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> |
0f6a3015 | 11 | #include <linux/bitops.h> |
4605eab3 | 12 | #include <api/fs/tracing_path.h> |
4e319027 RR |
13 | #include <traceevent/event-parse.h> |
14 | #include <linux/hw_breakpoint.h> | |
15 | #include <linux/perf_event.h> | |
8dd2a131 | 16 | #include <linux/err.h> |
bec19672 | 17 | #include <sys/resource.h> |
4e319027 | 18 | #include "asm/bug.h" |
8f651eae | 19 | #include "callchain.h" |
f14d5707 | 20 | #include "cgroup.h" |
69aad6f1 | 21 | #include "evsel.h" |
70082dd9 | 22 | #include "evlist.h" |
69aad6f1 | 23 | #include "util.h" |
86bd5e86 | 24 | #include "cpumap.h" |
fd78260b | 25 | #include "thread_map.h" |
12864b31 | 26 | #include "target.h" |
26d33022 | 27 | #include "perf_regs.h" |
e3e1a54f | 28 | #include "debug.h" |
97978b3e | 29 | #include "trace-event.h" |
a9a3a4d9 | 30 | #include "stat.h" |
69aad6f1 | 31 | |
594ac61a ACM |
32 | static struct { |
33 | bool sample_id_all; | |
34 | bool exclude_guest; | |
5c5e854b | 35 | bool mmap2; |
57480d2c | 36 | bool cloexec; |
814c8c38 PZ |
37 | bool clockid; |
38 | bool clockid_wrong; | |
bd0f8895 | 39 | bool lbr_flags; |
b90dc17a | 40 | bool write_backward; |
594ac61a ACM |
41 | } perf_missing_features; |
42 | ||
814c8c38 PZ |
43 | static clockid_t clockid; |
44 | ||
ce8ccff5 ACM |
45 | static int perf_evsel__no_extra_init(struct perf_evsel *evsel __maybe_unused) |
46 | { | |
47 | return 0; | |
48 | } | |
49 | ||
50 | static void perf_evsel__no_extra_fini(struct perf_evsel *evsel __maybe_unused) | |
51 | { | |
52 | } | |
53 | ||
54 | static struct { | |
55 | size_t size; | |
56 | int (*init)(struct perf_evsel *evsel); | |
57 | void (*fini)(struct perf_evsel *evsel); | |
58 | } perf_evsel__object = { | |
59 | .size = sizeof(struct perf_evsel), | |
60 | .init = perf_evsel__no_extra_init, | |
61 | .fini = perf_evsel__no_extra_fini, | |
62 | }; | |
63 | ||
64 | int perf_evsel__object_config(size_t object_size, | |
65 | int (*init)(struct perf_evsel *evsel), | |
66 | void (*fini)(struct perf_evsel *evsel)) | |
67 | { | |
68 | ||
69 | if (object_size == 0) | |
70 | goto set_methods; | |
71 | ||
72 | if (perf_evsel__object.size > object_size) | |
73 | return -EINVAL; | |
74 | ||
75 | perf_evsel__object.size = object_size; | |
76 | ||
77 | set_methods: | |
78 | if (init != NULL) | |
79 | perf_evsel__object.init = init; | |
80 | ||
81 | if (fini != NULL) | |
82 | perf_evsel__object.fini = fini; | |
83 | ||
84 | return 0; | |
85 | } | |
86 | ||
c52b12ed ACM |
87 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
88 | ||
75562573 | 89 | int __perf_evsel__sample_size(u64 sample_type) |
c2a70653 ACM |
90 | { |
91 | u64 mask = sample_type & PERF_SAMPLE_MASK; | |
92 | int size = 0; | |
93 | int i; | |
94 | ||
95 | for (i = 0; i < 64; i++) { | |
96 | if (mask & (1ULL << i)) | |
97 | size++; | |
98 | } | |
99 | ||
100 | size *= sizeof(u64); | |
101 | ||
102 | return size; | |
103 | } | |
104 | ||
75562573 AH |
105 | /** |
106 | * __perf_evsel__calc_id_pos - calculate id_pos. | |
107 | * @sample_type: sample type | |
108 | * | |
109 | * This function returns the position of the event id (PERF_SAMPLE_ID or | |
110 | * PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of struct | |
111 | * sample_event. | |
112 | */ | |
113 | static int __perf_evsel__calc_id_pos(u64 sample_type) | |
114 | { | |
115 | int idx = 0; | |
116 | ||
117 | if (sample_type & PERF_SAMPLE_IDENTIFIER) | |
118 | return 0; | |
119 | ||
120 | if (!(sample_type & PERF_SAMPLE_ID)) | |
121 | return -1; | |
122 | ||
123 | if (sample_type & PERF_SAMPLE_IP) | |
124 | idx += 1; | |
125 | ||
126 | if (sample_type & PERF_SAMPLE_TID) | |
127 | idx += 1; | |
128 | ||
129 | if (sample_type & PERF_SAMPLE_TIME) | |
130 | idx += 1; | |
131 | ||
132 | if (sample_type & PERF_SAMPLE_ADDR) | |
133 | idx += 1; | |
134 | ||
135 | return idx; | |
136 | } | |
137 | ||
138 | /** | |
139 | * __perf_evsel__calc_is_pos - calculate is_pos. | |
140 | * @sample_type: sample type | |
141 | * | |
142 | * This function returns the position (counting backwards) of the event id | |
143 | * (PERF_SAMPLE_ID or PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if | |
144 | * sample_id_all is used there is an id sample appended to non-sample events. | |
145 | */ | |
146 | static int __perf_evsel__calc_is_pos(u64 sample_type) | |
147 | { | |
148 | int idx = 1; | |
149 | ||
150 | if (sample_type & PERF_SAMPLE_IDENTIFIER) | |
151 | return 1; | |
152 | ||
153 | if (!(sample_type & PERF_SAMPLE_ID)) | |
154 | return -1; | |
155 | ||
156 | if (sample_type & PERF_SAMPLE_CPU) | |
157 | idx += 1; | |
158 | ||
159 | if (sample_type & PERF_SAMPLE_STREAM_ID) | |
160 | idx += 1; | |
161 | ||
162 | return idx; | |
163 | } | |
164 | ||
165 | void perf_evsel__calc_id_pos(struct perf_evsel *evsel) | |
166 | { | |
167 | evsel->id_pos = __perf_evsel__calc_id_pos(evsel->attr.sample_type); | |
168 | evsel->is_pos = __perf_evsel__calc_is_pos(evsel->attr.sample_type); | |
169 | } | |
170 | ||
7be5ebe8 ACM |
171 | void __perf_evsel__set_sample_bit(struct perf_evsel *evsel, |
172 | enum perf_event_sample_format bit) | |
173 | { | |
174 | if (!(evsel->attr.sample_type & bit)) { | |
175 | evsel->attr.sample_type |= bit; | |
176 | evsel->sample_size += sizeof(u64); | |
75562573 | 177 | perf_evsel__calc_id_pos(evsel); |
7be5ebe8 ACM |
178 | } |
179 | } | |
180 | ||
181 | void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel, | |
182 | enum perf_event_sample_format bit) | |
183 | { | |
184 | if (evsel->attr.sample_type & bit) { | |
185 | evsel->attr.sample_type &= ~bit; | |
186 | evsel->sample_size -= sizeof(u64); | |
75562573 | 187 | perf_evsel__calc_id_pos(evsel); |
7be5ebe8 ACM |
188 | } |
189 | } | |
190 | ||
75562573 AH |
191 | void perf_evsel__set_sample_id(struct perf_evsel *evsel, |
192 | bool can_sample_identifier) | |
7a5a5ca5 | 193 | { |
75562573 AH |
194 | if (can_sample_identifier) { |
195 | perf_evsel__reset_sample_bit(evsel, ID); | |
196 | perf_evsel__set_sample_bit(evsel, IDENTIFIER); | |
197 | } else { | |
198 | perf_evsel__set_sample_bit(evsel, ID); | |
199 | } | |
7a5a5ca5 ACM |
200 | evsel->attr.read_format |= PERF_FORMAT_ID; |
201 | } | |
202 | ||
5496bc0c ACM |
203 | /** |
204 | * perf_evsel__is_function_event - Return whether given evsel is a function | |
205 | * trace event | |
206 | * | |
207 | * @evsel - evsel selector to be tested | |
208 | * | |
209 | * Return %true if event is function trace event | |
210 | */ | |
211 | bool perf_evsel__is_function_event(struct perf_evsel *evsel) | |
212 | { | |
213 | #define FUNCTION_EVENT "ftrace:function" | |
214 | ||
215 | return evsel->name && | |
216 | !strncmp(FUNCTION_EVENT, evsel->name, sizeof(FUNCTION_EVENT)); | |
217 | ||
218 | #undef FUNCTION_EVENT | |
219 | } | |
220 | ||
ef1d1af2 ACM |
221 | void perf_evsel__init(struct perf_evsel *evsel, |
222 | struct perf_event_attr *attr, int idx) | |
223 | { | |
224 | evsel->idx = idx; | |
60b0896c | 225 | evsel->tracking = !idx; |
ef1d1af2 | 226 | evsel->attr = *attr; |
2cfda562 | 227 | evsel->leader = evsel; |
410136f5 SE |
228 | evsel->unit = ""; |
229 | evsel->scale = 1.0; | |
d49e4695 | 230 | evsel->evlist = NULL; |
1f45b1d4 | 231 | evsel->bpf_fd = -1; |
ef1d1af2 | 232 | INIT_LIST_HEAD(&evsel->node); |
930a2e29 | 233 | INIT_LIST_HEAD(&evsel->config_terms); |
ce8ccff5 | 234 | perf_evsel__object.init(evsel); |
bde09467 | 235 | evsel->sample_size = __perf_evsel__sample_size(attr->sample_type); |
75562573 | 236 | perf_evsel__calc_id_pos(evsel); |
15bfd2cc | 237 | evsel->cmdline_group_boundary = false; |
ef1d1af2 ACM |
238 | } |
239 | ||
ef503831 | 240 | struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx) |
69aad6f1 | 241 | { |
ce8ccff5 | 242 | struct perf_evsel *evsel = zalloc(perf_evsel__object.size); |
69aad6f1 | 243 | |
ef1d1af2 ACM |
244 | if (evsel != NULL) |
245 | perf_evsel__init(evsel, attr, idx); | |
69aad6f1 | 246 | |
03e0a7df | 247 | if (perf_evsel__is_bpf_output(evsel)) { |
d37ba880 WN |
248 | evsel->attr.sample_type |= (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | |
249 | PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), | |
03e0a7df WN |
250 | evsel->attr.sample_period = 1; |
251 | } | |
252 | ||
69aad6f1 ACM |
253 | return evsel; |
254 | } | |
255 | ||
7c48dcfd ACM |
256 | struct perf_evsel *perf_evsel__new_cycles(void) |
257 | { | |
258 | struct perf_event_attr attr = { | |
259 | .type = PERF_TYPE_HARDWARE, | |
260 | .config = PERF_COUNT_HW_CPU_CYCLES, | |
261 | }; | |
262 | struct perf_evsel *evsel; | |
263 | ||
264 | event_attr_init(&attr); | |
265 | ||
266 | perf_event_attr__set_max_precise_ip(&attr); | |
267 | ||
268 | evsel = perf_evsel__new(&attr); | |
269 | if (evsel == NULL) | |
270 | goto out; | |
271 | ||
272 | /* use asprintf() because free(evsel) assumes name is allocated */ | |
273 | if (asprintf(&evsel->name, "cycles%.*s", | |
274 | attr.precise_ip ? attr.precise_ip + 1 : 0, ":ppp") < 0) | |
275 | goto error_free; | |
276 | out: | |
277 | return evsel; | |
278 | error_free: | |
279 | perf_evsel__delete(evsel); | |
280 | evsel = NULL; | |
281 | goto out; | |
282 | } | |
283 | ||
8dd2a131 JO |
284 | /* |
285 | * Returns pointer with encoded error via <linux/err.h> interface. | |
286 | */ | |
ef503831 | 287 | struct perf_evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx) |
efd2b924 | 288 | { |
ce8ccff5 | 289 | struct perf_evsel *evsel = zalloc(perf_evsel__object.size); |
8dd2a131 | 290 | int err = -ENOMEM; |
efd2b924 | 291 | |
8dd2a131 JO |
292 | if (evsel == NULL) { |
293 | goto out_err; | |
294 | } else { | |
efd2b924 | 295 | struct perf_event_attr attr = { |
0b80f8b3 ACM |
296 | .type = PERF_TYPE_TRACEPOINT, |
297 | .sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | | |
298 | PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), | |
efd2b924 ACM |
299 | }; |
300 | ||
e48ffe2b ACM |
301 | if (asprintf(&evsel->name, "%s:%s", sys, name) < 0) |
302 | goto out_free; | |
303 | ||
97978b3e | 304 | evsel->tp_format = trace_event__tp_format(sys, name); |
8dd2a131 JO |
305 | if (IS_ERR(evsel->tp_format)) { |
306 | err = PTR_ERR(evsel->tp_format); | |
efd2b924 | 307 | goto out_free; |
8dd2a131 | 308 | } |
efd2b924 | 309 | |
0b80f8b3 | 310 | event_attr_init(&attr); |
efd2b924 | 311 | attr.config = evsel->tp_format->id; |
0b80f8b3 | 312 | attr.sample_period = 1; |
efd2b924 | 313 | perf_evsel__init(evsel, &attr, idx); |
efd2b924 ACM |
314 | } |
315 | ||
316 | return evsel; | |
317 | ||
318 | out_free: | |
74cf249d | 319 | zfree(&evsel->name); |
efd2b924 | 320 | free(evsel); |
8dd2a131 JO |
321 | out_err: |
322 | return ERR_PTR(err); | |
efd2b924 ACM |
323 | } |
324 | ||
8ad7013b | 325 | const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = { |
c410431c ACM |
326 | "cycles", |
327 | "instructions", | |
328 | "cache-references", | |
329 | "cache-misses", | |
330 | "branches", | |
331 | "branch-misses", | |
332 | "bus-cycles", | |
333 | "stalled-cycles-frontend", | |
334 | "stalled-cycles-backend", | |
335 | "ref-cycles", | |
336 | }; | |
337 | ||
dd4f5223 | 338 | static const char *__perf_evsel__hw_name(u64 config) |
c410431c ACM |
339 | { |
340 | if (config < PERF_COUNT_HW_MAX && perf_evsel__hw_names[config]) | |
341 | return perf_evsel__hw_names[config]; | |
342 | ||
343 | return "unknown-hardware"; | |
344 | } | |
345 | ||
27f18617 | 346 | static int perf_evsel__add_modifiers(struct perf_evsel *evsel, char *bf, size_t size) |
c410431c | 347 | { |
27f18617 | 348 | int colon = 0, r = 0; |
c410431c | 349 | struct perf_event_attr *attr = &evsel->attr; |
c410431c ACM |
350 | bool exclude_guest_default = false; |
351 | ||
352 | #define MOD_PRINT(context, mod) do { \ | |
353 | if (!attr->exclude_##context) { \ | |
27f18617 | 354 | if (!colon) colon = ++r; \ |
c410431c ACM |
355 | r += scnprintf(bf + r, size - r, "%c", mod); \ |
356 | } } while(0) | |
357 | ||
358 | if (attr->exclude_kernel || attr->exclude_user || attr->exclude_hv) { | |
359 | MOD_PRINT(kernel, 'k'); | |
360 | MOD_PRINT(user, 'u'); | |
361 | MOD_PRINT(hv, 'h'); | |
362 | exclude_guest_default = true; | |
363 | } | |
364 | ||
365 | if (attr->precise_ip) { | |
366 | if (!colon) | |
27f18617 | 367 | colon = ++r; |
c410431c ACM |
368 | r += scnprintf(bf + r, size - r, "%.*s", attr->precise_ip, "ppp"); |
369 | exclude_guest_default = true; | |
370 | } | |
371 | ||
372 | if (attr->exclude_host || attr->exclude_guest == exclude_guest_default) { | |
373 | MOD_PRINT(host, 'H'); | |
374 | MOD_PRINT(guest, 'G'); | |
375 | } | |
376 | #undef MOD_PRINT | |
377 | if (colon) | |
27f18617 | 378 | bf[colon - 1] = ':'; |
c410431c ACM |
379 | return r; |
380 | } | |
381 | ||
27f18617 ACM |
382 | static int perf_evsel__hw_name(struct perf_evsel *evsel, char *bf, size_t size) |
383 | { | |
384 | int r = scnprintf(bf, size, "%s", __perf_evsel__hw_name(evsel->attr.config)); | |
385 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
386 | } | |
387 | ||
8ad7013b | 388 | const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = { |
335c2f5d ACM |
389 | "cpu-clock", |
390 | "task-clock", | |
391 | "page-faults", | |
392 | "context-switches", | |
8ad7013b | 393 | "cpu-migrations", |
335c2f5d ACM |
394 | "minor-faults", |
395 | "major-faults", | |
396 | "alignment-faults", | |
397 | "emulation-faults", | |
d22d1a2a | 398 | "dummy", |
335c2f5d ACM |
399 | }; |
400 | ||
dd4f5223 | 401 | static const char *__perf_evsel__sw_name(u64 config) |
335c2f5d ACM |
402 | { |
403 | if (config < PERF_COUNT_SW_MAX && perf_evsel__sw_names[config]) | |
404 | return perf_evsel__sw_names[config]; | |
405 | return "unknown-software"; | |
406 | } | |
407 | ||
408 | static int perf_evsel__sw_name(struct perf_evsel *evsel, char *bf, size_t size) | |
409 | { | |
410 | int r = scnprintf(bf, size, "%s", __perf_evsel__sw_name(evsel->attr.config)); | |
411 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
412 | } | |
413 | ||
287e74aa JO |
414 | static int __perf_evsel__bp_name(char *bf, size_t size, u64 addr, u64 type) |
415 | { | |
416 | int r; | |
417 | ||
418 | r = scnprintf(bf, size, "mem:0x%" PRIx64 ":", addr); | |
419 | ||
420 | if (type & HW_BREAKPOINT_R) | |
421 | r += scnprintf(bf + r, size - r, "r"); | |
422 | ||
423 | if (type & HW_BREAKPOINT_W) | |
424 | r += scnprintf(bf + r, size - r, "w"); | |
425 | ||
426 | if (type & HW_BREAKPOINT_X) | |
427 | r += scnprintf(bf + r, size - r, "x"); | |
428 | ||
429 | return r; | |
430 | } | |
431 | ||
432 | static int perf_evsel__bp_name(struct perf_evsel *evsel, char *bf, size_t size) | |
433 | { | |
434 | struct perf_event_attr *attr = &evsel->attr; | |
435 | int r = __perf_evsel__bp_name(bf, size, attr->bp_addr, attr->bp_type); | |
436 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
437 | } | |
438 | ||
0b668bc9 ACM |
439 | const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] |
440 | [PERF_EVSEL__MAX_ALIASES] = { | |
441 | { "L1-dcache", "l1-d", "l1d", "L1-data", }, | |
442 | { "L1-icache", "l1-i", "l1i", "L1-instruction", }, | |
443 | { "LLC", "L2", }, | |
444 | { "dTLB", "d-tlb", "Data-TLB", }, | |
445 | { "iTLB", "i-tlb", "Instruction-TLB", }, | |
446 | { "branch", "branches", "bpu", "btb", "bpc", }, | |
447 | { "node", }, | |
448 | }; | |
449 | ||
450 | const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] | |
451 | [PERF_EVSEL__MAX_ALIASES] = { | |
452 | { "load", "loads", "read", }, | |
453 | { "store", "stores", "write", }, | |
454 | { "prefetch", "prefetches", "speculative-read", "speculative-load", }, | |
455 | }; | |
456 | ||
457 | const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] | |
458 | [PERF_EVSEL__MAX_ALIASES] = { | |
459 | { "refs", "Reference", "ops", "access", }, | |
460 | { "misses", "miss", }, | |
461 | }; | |
462 | ||
463 | #define C(x) PERF_COUNT_HW_CACHE_##x | |
464 | #define CACHE_READ (1 << C(OP_READ)) | |
465 | #define CACHE_WRITE (1 << C(OP_WRITE)) | |
466 | #define CACHE_PREFETCH (1 << C(OP_PREFETCH)) | |
467 | #define COP(x) (1 << x) | |
468 | ||
469 | /* | |
470 | * cache operartion stat | |
471 | * L1I : Read and prefetch only | |
472 | * ITLB and BPU : Read-only | |
473 | */ | |
474 | static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = { | |
475 | [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
476 | [C(L1I)] = (CACHE_READ | CACHE_PREFETCH), | |
477 | [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
478 | [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
479 | [C(ITLB)] = (CACHE_READ), | |
480 | [C(BPU)] = (CACHE_READ), | |
481 | [C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
482 | }; | |
483 | ||
484 | bool perf_evsel__is_cache_op_valid(u8 type, u8 op) | |
485 | { | |
486 | if (perf_evsel__hw_cache_stat[type] & COP(op)) | |
487 | return true; /* valid */ | |
488 | else | |
489 | return false; /* invalid */ | |
490 | } | |
491 | ||
492 | int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, | |
493 | char *bf, size_t size) | |
494 | { | |
495 | if (result) { | |
496 | return scnprintf(bf, size, "%s-%s-%s", perf_evsel__hw_cache[type][0], | |
497 | perf_evsel__hw_cache_op[op][0], | |
498 | perf_evsel__hw_cache_result[result][0]); | |
499 | } | |
500 | ||
501 | return scnprintf(bf, size, "%s-%s", perf_evsel__hw_cache[type][0], | |
502 | perf_evsel__hw_cache_op[op][1]); | |
503 | } | |
504 | ||
dd4f5223 | 505 | static int __perf_evsel__hw_cache_name(u64 config, char *bf, size_t size) |
0b668bc9 ACM |
506 | { |
507 | u8 op, result, type = (config >> 0) & 0xff; | |
508 | const char *err = "unknown-ext-hardware-cache-type"; | |
509 | ||
510 | if (type > PERF_COUNT_HW_CACHE_MAX) | |
511 | goto out_err; | |
512 | ||
513 | op = (config >> 8) & 0xff; | |
514 | err = "unknown-ext-hardware-cache-op"; | |
515 | if (op > PERF_COUNT_HW_CACHE_OP_MAX) | |
516 | goto out_err; | |
517 | ||
518 | result = (config >> 16) & 0xff; | |
519 | err = "unknown-ext-hardware-cache-result"; | |
520 | if (result > PERF_COUNT_HW_CACHE_RESULT_MAX) | |
521 | goto out_err; | |
522 | ||
523 | err = "invalid-cache"; | |
524 | if (!perf_evsel__is_cache_op_valid(type, op)) | |
525 | goto out_err; | |
526 | ||
527 | return __perf_evsel__hw_cache_type_op_res_name(type, op, result, bf, size); | |
528 | out_err: | |
529 | return scnprintf(bf, size, "%s", err); | |
530 | } | |
531 | ||
532 | static int perf_evsel__hw_cache_name(struct perf_evsel *evsel, char *bf, size_t size) | |
533 | { | |
534 | int ret = __perf_evsel__hw_cache_name(evsel->attr.config, bf, size); | |
535 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); | |
536 | } | |
537 | ||
6eef3d9c ACM |
538 | static int perf_evsel__raw_name(struct perf_evsel *evsel, char *bf, size_t size) |
539 | { | |
540 | int ret = scnprintf(bf, size, "raw 0x%" PRIx64, evsel->attr.config); | |
541 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); | |
542 | } | |
543 | ||
7289f83c | 544 | const char *perf_evsel__name(struct perf_evsel *evsel) |
a4460836 | 545 | { |
7289f83c | 546 | char bf[128]; |
a4460836 | 547 | |
7289f83c ACM |
548 | if (evsel->name) |
549 | return evsel->name; | |
c410431c ACM |
550 | |
551 | switch (evsel->attr.type) { | |
552 | case PERF_TYPE_RAW: | |
6eef3d9c | 553 | perf_evsel__raw_name(evsel, bf, sizeof(bf)); |
c410431c ACM |
554 | break; |
555 | ||
556 | case PERF_TYPE_HARDWARE: | |
7289f83c | 557 | perf_evsel__hw_name(evsel, bf, sizeof(bf)); |
c410431c | 558 | break; |
0b668bc9 ACM |
559 | |
560 | case PERF_TYPE_HW_CACHE: | |
7289f83c | 561 | perf_evsel__hw_cache_name(evsel, bf, sizeof(bf)); |
0b668bc9 ACM |
562 | break; |
563 | ||
335c2f5d | 564 | case PERF_TYPE_SOFTWARE: |
7289f83c | 565 | perf_evsel__sw_name(evsel, bf, sizeof(bf)); |
335c2f5d ACM |
566 | break; |
567 | ||
a4460836 | 568 | case PERF_TYPE_TRACEPOINT: |
7289f83c | 569 | scnprintf(bf, sizeof(bf), "%s", "unknown tracepoint"); |
a4460836 ACM |
570 | break; |
571 | ||
287e74aa JO |
572 | case PERF_TYPE_BREAKPOINT: |
573 | perf_evsel__bp_name(evsel, bf, sizeof(bf)); | |
574 | break; | |
575 | ||
c410431c | 576 | default: |
ca1b1457 RR |
577 | scnprintf(bf, sizeof(bf), "unknown attr type: %d", |
578 | evsel->attr.type); | |
a4460836 | 579 | break; |
c410431c ACM |
580 | } |
581 | ||
7289f83c ACM |
582 | evsel->name = strdup(bf); |
583 | ||
584 | return evsel->name ?: "unknown"; | |
c410431c ACM |
585 | } |
586 | ||
717e263f NK |
587 | const char *perf_evsel__group_name(struct perf_evsel *evsel) |
588 | { | |
589 | return evsel->group_name ?: "anon group"; | |
590 | } | |
591 | ||
592 | int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size) | |
593 | { | |
594 | int ret; | |
595 | struct perf_evsel *pos; | |
596 | const char *group_name = perf_evsel__group_name(evsel); | |
597 | ||
598 | ret = scnprintf(buf, size, "%s", group_name); | |
599 | ||
600 | ret += scnprintf(buf + ret, size - ret, " { %s", | |
601 | perf_evsel__name(evsel)); | |
602 | ||
603 | for_each_group_member(pos, evsel) | |
604 | ret += scnprintf(buf + ret, size - ret, ", %s", | |
605 | perf_evsel__name(pos)); | |
606 | ||
607 | ret += scnprintf(buf + ret, size - ret, " }"); | |
608 | ||
609 | return ret; | |
610 | } | |
611 | ||
01e0d50c ACM |
612 | void perf_evsel__config_callchain(struct perf_evsel *evsel, |
613 | struct record_opts *opts, | |
614 | struct callchain_param *param) | |
6bedfab6 JO |
615 | { |
616 | bool function = perf_evsel__is_function_event(evsel); | |
617 | struct perf_event_attr *attr = &evsel->attr; | |
618 | ||
619 | perf_evsel__set_sample_bit(evsel, CALLCHAIN); | |
620 | ||
792d48b4 ACM |
621 | attr->sample_max_stack = param->max_stack; |
622 | ||
c3a6a8c4 | 623 | if (param->record_mode == CALLCHAIN_LBR) { |
aad2b21c KL |
624 | if (!opts->branch_stack) { |
625 | if (attr->exclude_user) { | |
626 | pr_warning("LBR callstack option is only available " | |
627 | "to get user callchain information. " | |
628 | "Falling back to framepointers.\n"); | |
629 | } else { | |
630 | perf_evsel__set_sample_bit(evsel, BRANCH_STACK); | |
631 | attr->branch_sample_type = PERF_SAMPLE_BRANCH_USER | | |
bd0f8895 AK |
632 | PERF_SAMPLE_BRANCH_CALL_STACK | |
633 | PERF_SAMPLE_BRANCH_NO_CYCLES | | |
634 | PERF_SAMPLE_BRANCH_NO_FLAGS; | |
aad2b21c KL |
635 | } |
636 | } else | |
637 | pr_warning("Cannot use LBR callstack with branch stack. " | |
638 | "Falling back to framepointers.\n"); | |
639 | } | |
640 | ||
c3a6a8c4 | 641 | if (param->record_mode == CALLCHAIN_DWARF) { |
6bedfab6 JO |
642 | if (!function) { |
643 | perf_evsel__set_sample_bit(evsel, REGS_USER); | |
644 | perf_evsel__set_sample_bit(evsel, STACK_USER); | |
645 | attr->sample_regs_user = PERF_REGS_MASK; | |
c3a6a8c4 | 646 | attr->sample_stack_user = param->dump_size; |
6bedfab6 JO |
647 | attr->exclude_callchain_user = 1; |
648 | } else { | |
649 | pr_info("Cannot use DWARF unwind for function trace event," | |
650 | " falling back to framepointers.\n"); | |
651 | } | |
652 | } | |
653 | ||
654 | if (function) { | |
655 | pr_info("Disabling user space callchains for function trace event.\n"); | |
656 | attr->exclude_callchain_user = 1; | |
657 | } | |
658 | } | |
659 | ||
d457c963 KL |
660 | static void |
661 | perf_evsel__reset_callgraph(struct perf_evsel *evsel, | |
662 | struct callchain_param *param) | |
663 | { | |
664 | struct perf_event_attr *attr = &evsel->attr; | |
665 | ||
666 | perf_evsel__reset_sample_bit(evsel, CALLCHAIN); | |
667 | if (param->record_mode == CALLCHAIN_LBR) { | |
668 | perf_evsel__reset_sample_bit(evsel, BRANCH_STACK); | |
669 | attr->branch_sample_type &= ~(PERF_SAMPLE_BRANCH_USER | | |
670 | PERF_SAMPLE_BRANCH_CALL_STACK); | |
671 | } | |
672 | if (param->record_mode == CALLCHAIN_DWARF) { | |
673 | perf_evsel__reset_sample_bit(evsel, REGS_USER); | |
674 | perf_evsel__reset_sample_bit(evsel, STACK_USER); | |
675 | } | |
676 | } | |
677 | ||
678 | static void apply_config_terms(struct perf_evsel *evsel, | |
679 | struct record_opts *opts) | |
930a2e29 JO |
680 | { |
681 | struct perf_evsel_config_term *term; | |
32067712 KL |
682 | struct list_head *config_terms = &evsel->config_terms; |
683 | struct perf_event_attr *attr = &evsel->attr; | |
d457c963 KL |
684 | struct callchain_param param; |
685 | u32 dump_size = 0; | |
792d48b4 ACM |
686 | int max_stack = 0; |
687 | const char *callgraph_buf = NULL; | |
d457c963 KL |
688 | |
689 | /* callgraph default */ | |
690 | param.record_mode = callchain_param.record_mode; | |
930a2e29 JO |
691 | |
692 | list_for_each_entry(term, config_terms, list) { | |
693 | switch (term->type) { | |
ee4c7588 JO |
694 | case PERF_EVSEL__CONFIG_TERM_PERIOD: |
695 | attr->sample_period = term->val.period; | |
ab35a7d0 | 696 | attr->freq = 0; |
32067712 | 697 | break; |
09af2a55 NK |
698 | case PERF_EVSEL__CONFIG_TERM_FREQ: |
699 | attr->sample_freq = term->val.freq; | |
700 | attr->freq = 1; | |
701 | break; | |
32067712 KL |
702 | case PERF_EVSEL__CONFIG_TERM_TIME: |
703 | if (term->val.time) | |
704 | perf_evsel__set_sample_bit(evsel, TIME); | |
705 | else | |
706 | perf_evsel__reset_sample_bit(evsel, TIME); | |
707 | break; | |
d457c963 KL |
708 | case PERF_EVSEL__CONFIG_TERM_CALLGRAPH: |
709 | callgraph_buf = term->val.callgraph; | |
710 | break; | |
711 | case PERF_EVSEL__CONFIG_TERM_STACK_USER: | |
712 | dump_size = term->val.stack_user; | |
713 | break; | |
792d48b4 ACM |
714 | case PERF_EVSEL__CONFIG_TERM_MAX_STACK: |
715 | max_stack = term->val.max_stack; | |
716 | break; | |
374ce938 WN |
717 | case PERF_EVSEL__CONFIG_TERM_INHERIT: |
718 | /* | |
719 | * attr->inherit should has already been set by | |
720 | * perf_evsel__config. If user explicitly set | |
721 | * inherit using config terms, override global | |
722 | * opt->no_inherit setting. | |
723 | */ | |
724 | attr->inherit = term->val.inherit ? 1 : 0; | |
725 | break; | |
626a6b78 WN |
726 | case PERF_EVSEL__CONFIG_TERM_OVERWRITE: |
727 | attr->write_backward = term->val.overwrite ? 1 : 0; | |
728 | break; | |
930a2e29 JO |
729 | default: |
730 | break; | |
731 | } | |
732 | } | |
d457c963 KL |
733 | |
734 | /* User explicitly set per-event callgraph, clear the old setting and reset. */ | |
792d48b4 ACM |
735 | if ((callgraph_buf != NULL) || (dump_size > 0) || max_stack) { |
736 | if (max_stack) { | |
737 | param.max_stack = max_stack; | |
738 | if (callgraph_buf == NULL) | |
739 | callgraph_buf = "fp"; | |
740 | } | |
d457c963 KL |
741 | |
742 | /* parse callgraph parameters */ | |
743 | if (callgraph_buf != NULL) { | |
f9db0d0f KL |
744 | if (!strcmp(callgraph_buf, "no")) { |
745 | param.enabled = false; | |
746 | param.record_mode = CALLCHAIN_NONE; | |
747 | } else { | |
748 | param.enabled = true; | |
749 | if (parse_callchain_record(callgraph_buf, ¶m)) { | |
750 | pr_err("per-event callgraph setting for %s failed. " | |
751 | "Apply callgraph global setting for it\n", | |
752 | evsel->name); | |
753 | return; | |
754 | } | |
d457c963 KL |
755 | } |
756 | } | |
757 | if (dump_size > 0) { | |
758 | dump_size = round_up(dump_size, sizeof(u64)); | |
759 | param.dump_size = dump_size; | |
760 | } | |
761 | ||
762 | /* If global callgraph set, clear it */ | |
763 | if (callchain_param.enabled) | |
764 | perf_evsel__reset_callgraph(evsel, &callchain_param); | |
765 | ||
766 | /* set perf-event callgraph */ | |
767 | if (param.enabled) | |
01e0d50c | 768 | perf_evsel__config_callchain(evsel, opts, ¶m); |
d457c963 | 769 | } |
930a2e29 JO |
770 | } |
771 | ||
774cb499 JO |
772 | /* |
773 | * The enable_on_exec/disabled value strategy: | |
774 | * | |
775 | * 1) For any type of traced program: | |
776 | * - all independent events and group leaders are disabled | |
777 | * - all group members are enabled | |
778 | * | |
779 | * Group members are ruled by group leaders. They need to | |
780 | * be enabled, because the group scheduling relies on that. | |
781 | * | |
782 | * 2) For traced programs executed by perf: | |
783 | * - all independent events and group leaders have | |
784 | * enable_on_exec set | |
785 | * - we don't specifically enable or disable any event during | |
786 | * the record command | |
787 | * | |
788 | * Independent events and group leaders are initially disabled | |
789 | * and get enabled by exec. Group members are ruled by group | |
790 | * leaders as stated in 1). | |
791 | * | |
792 | * 3) For traced programs attached by perf (pid/tid): | |
793 | * - we specifically enable or disable all events during | |
794 | * the record command | |
795 | * | |
796 | * When attaching events to already running traced we | |
797 | * enable/disable events specifically, as there's no | |
798 | * initial traced exec call. | |
799 | */ | |
e68ae9cf ACM |
800 | void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts, |
801 | struct callchain_param *callchain) | |
0f82ebc4 | 802 | { |
3c176311 | 803 | struct perf_evsel *leader = evsel->leader; |
0f82ebc4 | 804 | struct perf_event_attr *attr = &evsel->attr; |
60b0896c | 805 | int track = evsel->tracking; |
3aa5939d | 806 | bool per_cpu = opts->target.default_per_cpu && !opts->target.per_thread; |
0f82ebc4 | 807 | |
594ac61a | 808 | attr->sample_id_all = perf_missing_features.sample_id_all ? 0 : 1; |
0f82ebc4 | 809 | attr->inherit = !opts->no_inherit; |
626a6b78 | 810 | attr->write_backward = opts->overwrite ? 1 : 0; |
0f82ebc4 | 811 | |
7be5ebe8 ACM |
812 | perf_evsel__set_sample_bit(evsel, IP); |
813 | perf_evsel__set_sample_bit(evsel, TID); | |
0f82ebc4 | 814 | |
3c176311 JO |
815 | if (evsel->sample_read) { |
816 | perf_evsel__set_sample_bit(evsel, READ); | |
817 | ||
818 | /* | |
819 | * We need ID even in case of single event, because | |
820 | * PERF_SAMPLE_READ process ID specific data. | |
821 | */ | |
75562573 | 822 | perf_evsel__set_sample_id(evsel, false); |
3c176311 JO |
823 | |
824 | /* | |
825 | * Apply group format only if we belong to group | |
826 | * with more than one members. | |
827 | */ | |
828 | if (leader->nr_members > 1) { | |
829 | attr->read_format |= PERF_FORMAT_GROUP; | |
830 | attr->inherit = 0; | |
831 | } | |
832 | } | |
833 | ||
0f82ebc4 | 834 | /* |
17314e23 | 835 | * We default some events to have a default interval. But keep |
0f82ebc4 ACM |
836 | * it a weak assumption overridable by the user. |
837 | */ | |
17314e23 | 838 | if (!attr->sample_period || (opts->user_freq != UINT_MAX || |
0f82ebc4 ACM |
839 | opts->user_interval != ULLONG_MAX)) { |
840 | if (opts->freq) { | |
7be5ebe8 | 841 | perf_evsel__set_sample_bit(evsel, PERIOD); |
0f82ebc4 ACM |
842 | attr->freq = 1; |
843 | attr->sample_freq = opts->freq; | |
844 | } else { | |
845 | attr->sample_period = opts->default_interval; | |
846 | } | |
847 | } | |
848 | ||
3c176311 JO |
849 | /* |
850 | * Disable sampling for all group members other | |
851 | * than leader in case leader 'leads' the sampling. | |
852 | */ | |
853 | if ((leader != evsel) && leader->sample_read) { | |
854 | attr->sample_freq = 0; | |
855 | attr->sample_period = 0; | |
856 | } | |
857 | ||
0f82ebc4 ACM |
858 | if (opts->no_samples) |
859 | attr->sample_freq = 0; | |
860 | ||
861 | if (opts->inherit_stat) | |
862 | attr->inherit_stat = 1; | |
863 | ||
864 | if (opts->sample_address) { | |
7be5ebe8 | 865 | perf_evsel__set_sample_bit(evsel, ADDR); |
0f82ebc4 ACM |
866 | attr->mmap_data = track; |
867 | } | |
868 | ||
f140373b JO |
869 | /* |
870 | * We don't allow user space callchains for function trace | |
871 | * event, due to issues with page faults while tracing page | |
872 | * fault handler and its overall trickiness nature. | |
873 | */ | |
874 | if (perf_evsel__is_function_event(evsel)) | |
875 | evsel->attr.exclude_callchain_user = 1; | |
876 | ||
e68ae9cf | 877 | if (callchain && callchain->enabled && !evsel->no_aux_samples) |
01e0d50c | 878 | perf_evsel__config_callchain(evsel, opts, callchain); |
26d33022 | 879 | |
6a21c0b5 | 880 | if (opts->sample_intr_regs) { |
bcc84ec6 | 881 | attr->sample_regs_intr = opts->sample_intr_regs; |
6a21c0b5 SE |
882 | perf_evsel__set_sample_bit(evsel, REGS_INTR); |
883 | } | |
884 | ||
b6f35ed7 | 885 | if (target__has_cpu(&opts->target) || opts->sample_cpu) |
7be5ebe8 | 886 | perf_evsel__set_sample_bit(evsel, CPU); |
0f82ebc4 | 887 | |
3e76ac78 | 888 | if (opts->period) |
7be5ebe8 | 889 | perf_evsel__set_sample_bit(evsel, PERIOD); |
3e76ac78 | 890 | |
8affc2b8 | 891 | /* |
bd1a0be5 | 892 | * When the user explicitly disabled time don't force it here. |
8affc2b8 AK |
893 | */ |
894 | if (opts->sample_time && | |
895 | (!perf_missing_features.sample_id_all && | |
3abebc55 AH |
896 | (!opts->no_inherit || target__has_cpu(&opts->target) || per_cpu || |
897 | opts->sample_time_set))) | |
7be5ebe8 | 898 | perf_evsel__set_sample_bit(evsel, TIME); |
0f82ebc4 | 899 | |
6ff1ce76 | 900 | if (opts->raw_samples && !evsel->no_aux_samples) { |
7be5ebe8 ACM |
901 | perf_evsel__set_sample_bit(evsel, TIME); |
902 | perf_evsel__set_sample_bit(evsel, RAW); | |
903 | perf_evsel__set_sample_bit(evsel, CPU); | |
0f82ebc4 ACM |
904 | } |
905 | ||
ccf49bfc | 906 | if (opts->sample_address) |
1e7ed5ec | 907 | perf_evsel__set_sample_bit(evsel, DATA_SRC); |
ccf49bfc | 908 | |
509051ea | 909 | if (opts->no_buffering) { |
0f82ebc4 ACM |
910 | attr->watermark = 0; |
911 | attr->wakeup_events = 1; | |
912 | } | |
6ff1ce76 | 913 | if (opts->branch_stack && !evsel->no_aux_samples) { |
7be5ebe8 | 914 | perf_evsel__set_sample_bit(evsel, BRANCH_STACK); |
bdfebd84 RAV |
915 | attr->branch_sample_type = opts->branch_stack; |
916 | } | |
0f82ebc4 | 917 | |
05484298 | 918 | if (opts->sample_weight) |
1e7ed5ec | 919 | perf_evsel__set_sample_bit(evsel, WEIGHT); |
05484298 | 920 | |
62e503b7 | 921 | attr->task = track; |
5c5e854b | 922 | attr->mmap = track; |
a5a5ba72 | 923 | attr->mmap2 = track && !perf_missing_features.mmap2; |
5c5e854b | 924 | attr->comm = track; |
0f82ebc4 | 925 | |
b757bb09 AH |
926 | if (opts->record_switch_events) |
927 | attr->context_switch = track; | |
928 | ||
475eeab9 | 929 | if (opts->sample_transaction) |
1e7ed5ec | 930 | perf_evsel__set_sample_bit(evsel, TRANSACTION); |
475eeab9 | 931 | |
85c273d2 AK |
932 | if (opts->running_time) { |
933 | evsel->attr.read_format |= | |
934 | PERF_FORMAT_TOTAL_TIME_ENABLED | | |
935 | PERF_FORMAT_TOTAL_TIME_RUNNING; | |
936 | } | |
937 | ||
774cb499 JO |
938 | /* |
939 | * XXX see the function comment above | |
940 | * | |
941 | * Disabling only independent events or group leaders, | |
942 | * keeping group members enabled. | |
943 | */ | |
823254ed | 944 | if (perf_evsel__is_group_leader(evsel)) |
774cb499 JO |
945 | attr->disabled = 1; |
946 | ||
947 | /* | |
948 | * Setting enable_on_exec for independent events and | |
949 | * group leaders for traced executed by perf. | |
950 | */ | |
6619a53e AK |
951 | if (target__none(&opts->target) && perf_evsel__is_group_leader(evsel) && |
952 | !opts->initial_delay) | |
0f82ebc4 | 953 | attr->enable_on_exec = 1; |
2afd2bcf AH |
954 | |
955 | if (evsel->immediate) { | |
956 | attr->disabled = 0; | |
957 | attr->enable_on_exec = 0; | |
958 | } | |
814c8c38 PZ |
959 | |
960 | clockid = opts->clockid; | |
961 | if (opts->use_clockid) { | |
962 | attr->use_clockid = 1; | |
963 | attr->clockid = opts->clockid; | |
964 | } | |
930a2e29 | 965 | |
7f94af7a JO |
966 | if (evsel->precise_max) |
967 | perf_event_attr__set_max_precise_ip(attr); | |
968 | ||
85723885 JO |
969 | if (opts->all_user) { |
970 | attr->exclude_kernel = 1; | |
971 | attr->exclude_user = 0; | |
972 | } | |
973 | ||
974 | if (opts->all_kernel) { | |
975 | attr->exclude_kernel = 0; | |
976 | attr->exclude_user = 1; | |
977 | } | |
978 | ||
930a2e29 JO |
979 | /* |
980 | * Apply event specific term settings, | |
981 | * it overloads any global configuration. | |
982 | */ | |
d457c963 | 983 | apply_config_terms(evsel, opts); |
0f82ebc4 ACM |
984 | } |
985 | ||
8885846f | 986 | static int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads) |
69aad6f1 | 987 | { |
4af4c955 | 988 | int cpu, thread; |
bf8e8f4b AH |
989 | |
990 | if (evsel->system_wide) | |
991 | nthreads = 1; | |
992 | ||
69aad6f1 | 993 | evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int)); |
4af4c955 DA |
994 | |
995 | if (evsel->fd) { | |
996 | for (cpu = 0; cpu < ncpus; cpu++) { | |
997 | for (thread = 0; thread < nthreads; thread++) { | |
998 | FD(evsel, cpu, thread) = -1; | |
999 | } | |
1000 | } | |
1001 | } | |
1002 | ||
69aad6f1 ACM |
1003 | return evsel->fd != NULL ? 0 : -ENOMEM; |
1004 | } | |
1005 | ||
e2407bef AK |
1006 | static int perf_evsel__run_ioctl(struct perf_evsel *evsel, int ncpus, int nthreads, |
1007 | int ioc, void *arg) | |
745cefc5 ACM |
1008 | { |
1009 | int cpu, thread; | |
1010 | ||
bf8e8f4b AH |
1011 | if (evsel->system_wide) |
1012 | nthreads = 1; | |
1013 | ||
745cefc5 ACM |
1014 | for (cpu = 0; cpu < ncpus; cpu++) { |
1015 | for (thread = 0; thread < nthreads; thread++) { | |
1016 | int fd = FD(evsel, cpu, thread), | |
e2407bef | 1017 | err = ioctl(fd, ioc, arg); |
745cefc5 ACM |
1018 | |
1019 | if (err) | |
1020 | return err; | |
1021 | } | |
1022 | } | |
1023 | ||
1024 | return 0; | |
1025 | } | |
1026 | ||
f47805a2 ACM |
1027 | int perf_evsel__apply_filter(struct perf_evsel *evsel, int ncpus, int nthreads, |
1028 | const char *filter) | |
e2407bef AK |
1029 | { |
1030 | return perf_evsel__run_ioctl(evsel, ncpus, nthreads, | |
1031 | PERF_EVENT_IOC_SET_FILTER, | |
1032 | (void *)filter); | |
1033 | } | |
1034 | ||
12467ae4 ACM |
1035 | int perf_evsel__set_filter(struct perf_evsel *evsel, const char *filter) |
1036 | { | |
1037 | char *new_filter = strdup(filter); | |
1038 | ||
1039 | if (new_filter != NULL) { | |
1040 | free(evsel->filter); | |
1041 | evsel->filter = new_filter; | |
1042 | return 0; | |
1043 | } | |
1044 | ||
1045 | return -1; | |
1046 | } | |
1047 | ||
64ec84f5 ACM |
1048 | int perf_evsel__append_filter(struct perf_evsel *evsel, |
1049 | const char *op, const char *filter) | |
1050 | { | |
1051 | char *new_filter; | |
1052 | ||
1053 | if (evsel->filter == NULL) | |
1054 | return perf_evsel__set_filter(evsel, filter); | |
1055 | ||
1056 | if (asprintf(&new_filter,"(%s) %s (%s)", evsel->filter, op, filter) > 0) { | |
1057 | free(evsel->filter); | |
1058 | evsel->filter = new_filter; | |
1059 | return 0; | |
1060 | } | |
1061 | ||
1062 | return -1; | |
1063 | } | |
1064 | ||
5cd95fc3 | 1065 | int perf_evsel__enable(struct perf_evsel *evsel) |
e2407bef | 1066 | { |
5cd95fc3 JO |
1067 | int nthreads = thread_map__nr(evsel->threads); |
1068 | int ncpus = cpu_map__nr(evsel->cpus); | |
1069 | ||
e2407bef AK |
1070 | return perf_evsel__run_ioctl(evsel, ncpus, nthreads, |
1071 | PERF_EVENT_IOC_ENABLE, | |
1072 | 0); | |
1073 | } | |
1074 | ||
e98a4cbb JO |
1075 | int perf_evsel__disable(struct perf_evsel *evsel) |
1076 | { | |
1077 | int nthreads = thread_map__nr(evsel->threads); | |
1078 | int ncpus = cpu_map__nr(evsel->cpus); | |
1079 | ||
1080 | return perf_evsel__run_ioctl(evsel, ncpus, nthreads, | |
1081 | PERF_EVENT_IOC_DISABLE, | |
1082 | 0); | |
1083 | } | |
1084 | ||
70db7533 ACM |
1085 | int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads) |
1086 | { | |
8d9cbd8f VG |
1087 | if (ncpus == 0 || nthreads == 0) |
1088 | return 0; | |
1089 | ||
bf8e8f4b AH |
1090 | if (evsel->system_wide) |
1091 | nthreads = 1; | |
1092 | ||
a91e5431 ACM |
1093 | evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id)); |
1094 | if (evsel->sample_id == NULL) | |
1095 | return -ENOMEM; | |
1096 | ||
1097 | evsel->id = zalloc(ncpus * nthreads * sizeof(u64)); | |
1098 | if (evsel->id == NULL) { | |
1099 | xyarray__delete(evsel->sample_id); | |
1100 | evsel->sample_id = NULL; | |
1101 | return -ENOMEM; | |
1102 | } | |
1103 | ||
1104 | return 0; | |
70db7533 ACM |
1105 | } |
1106 | ||
8885846f | 1107 | static void perf_evsel__free_fd(struct perf_evsel *evsel) |
69aad6f1 ACM |
1108 | { |
1109 | xyarray__delete(evsel->fd); | |
1110 | evsel->fd = NULL; | |
1111 | } | |
1112 | ||
8885846f | 1113 | static void perf_evsel__free_id(struct perf_evsel *evsel) |
70db7533 | 1114 | { |
a91e5431 ACM |
1115 | xyarray__delete(evsel->sample_id); |
1116 | evsel->sample_id = NULL; | |
04662523 | 1117 | zfree(&evsel->id); |
70db7533 ACM |
1118 | } |
1119 | ||
930a2e29 JO |
1120 | static void perf_evsel__free_config_terms(struct perf_evsel *evsel) |
1121 | { | |
1122 | struct perf_evsel_config_term *term, *h; | |
1123 | ||
1124 | list_for_each_entry_safe(term, h, &evsel->config_terms, list) { | |
1125 | list_del(&term->list); | |
1126 | free(term); | |
1127 | } | |
1128 | } | |
1129 | ||
c52b12ed ACM |
1130 | void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads) |
1131 | { | |
1132 | int cpu, thread; | |
1133 | ||
bf8e8f4b AH |
1134 | if (evsel->system_wide) |
1135 | nthreads = 1; | |
1136 | ||
c52b12ed ACM |
1137 | for (cpu = 0; cpu < ncpus; cpu++) |
1138 | for (thread = 0; thread < nthreads; ++thread) { | |
1139 | close(FD(evsel, cpu, thread)); | |
1140 | FD(evsel, cpu, thread) = -1; | |
1141 | } | |
1142 | } | |
1143 | ||
ef1d1af2 | 1144 | void perf_evsel__exit(struct perf_evsel *evsel) |
69aad6f1 ACM |
1145 | { |
1146 | assert(list_empty(&evsel->node)); | |
d49e4695 | 1147 | assert(evsel->evlist == NULL); |
736b05a0 NK |
1148 | perf_evsel__free_fd(evsel); |
1149 | perf_evsel__free_id(evsel); | |
930a2e29 | 1150 | perf_evsel__free_config_terms(evsel); |
597e48c1 | 1151 | close_cgroup(evsel->cgrp); |
f30a79b0 | 1152 | cpu_map__put(evsel->cpus); |
fce4d296 | 1153 | cpu_map__put(evsel->own_cpus); |
578e91ec | 1154 | thread_map__put(evsel->threads); |
597e48c1 | 1155 | zfree(&evsel->group_name); |
597e48c1 | 1156 | zfree(&evsel->name); |
ce8ccff5 | 1157 | perf_evsel__object.fini(evsel); |
ef1d1af2 ACM |
1158 | } |
1159 | ||
1160 | void perf_evsel__delete(struct perf_evsel *evsel) | |
1161 | { | |
1162 | perf_evsel__exit(evsel); | |
69aad6f1 ACM |
1163 | free(evsel); |
1164 | } | |
c52b12ed | 1165 | |
a6fa0038 | 1166 | void perf_evsel__compute_deltas(struct perf_evsel *evsel, int cpu, int thread, |
857a94a2 | 1167 | struct perf_counts_values *count) |
c7a79c47 SE |
1168 | { |
1169 | struct perf_counts_values tmp; | |
1170 | ||
1171 | if (!evsel->prev_raw_counts) | |
1172 | return; | |
1173 | ||
1174 | if (cpu == -1) { | |
1175 | tmp = evsel->prev_raw_counts->aggr; | |
1176 | evsel->prev_raw_counts->aggr = *count; | |
1177 | } else { | |
a6fa0038 JO |
1178 | tmp = *perf_counts(evsel->prev_raw_counts, cpu, thread); |
1179 | *perf_counts(evsel->prev_raw_counts, cpu, thread) = *count; | |
c7a79c47 SE |
1180 | } |
1181 | ||
1182 | count->val = count->val - tmp.val; | |
1183 | count->ena = count->ena - tmp.ena; | |
1184 | count->run = count->run - tmp.run; | |
1185 | } | |
1186 | ||
13112bbf JO |
1187 | void perf_counts_values__scale(struct perf_counts_values *count, |
1188 | bool scale, s8 *pscaled) | |
1189 | { | |
1190 | s8 scaled = 0; | |
1191 | ||
1192 | if (scale) { | |
1193 | if (count->run == 0) { | |
1194 | scaled = -1; | |
1195 | count->val = 0; | |
1196 | } else if (count->run < count->ena) { | |
1197 | scaled = 1; | |
1198 | count->val = (u64)((double) count->val * count->ena / count->run + 0.5); | |
1199 | } | |
1200 | } else | |
1201 | count->ena = count->run = 0; | |
1202 | ||
1203 | if (pscaled) | |
1204 | *pscaled = scaled; | |
1205 | } | |
1206 | ||
f99f4719 JO |
1207 | int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread, |
1208 | struct perf_counts_values *count) | |
1209 | { | |
1210 | memset(count, 0, sizeof(*count)); | |
1211 | ||
1212 | if (FD(evsel, cpu, thread) < 0) | |
1213 | return -EINVAL; | |
1214 | ||
1215 | if (readn(FD(evsel, cpu, thread), count, sizeof(*count)) < 0) | |
1216 | return -errno; | |
1217 | ||
1218 | return 0; | |
1219 | } | |
1220 | ||
c52b12ed ACM |
1221 | int __perf_evsel__read_on_cpu(struct perf_evsel *evsel, |
1222 | int cpu, int thread, bool scale) | |
1223 | { | |
1224 | struct perf_counts_values count; | |
1225 | size_t nv = scale ? 3 : 1; | |
1226 | ||
1227 | if (FD(evsel, cpu, thread) < 0) | |
1228 | return -EINVAL; | |
1229 | ||
a6fa0038 | 1230 | if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1, thread + 1) < 0) |
4eed11d5 ACM |
1231 | return -ENOMEM; |
1232 | ||
c52b12ed ACM |
1233 | if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) < 0) |
1234 | return -errno; | |
1235 | ||
a6fa0038 | 1236 | perf_evsel__compute_deltas(evsel, cpu, thread, &count); |
13112bbf | 1237 | perf_counts_values__scale(&count, scale, NULL); |
a6fa0038 | 1238 | *perf_counts(evsel->counts, cpu, thread) = count; |
c52b12ed ACM |
1239 | return 0; |
1240 | } | |
1241 | ||
6a4bb04c JO |
1242 | static int get_group_fd(struct perf_evsel *evsel, int cpu, int thread) |
1243 | { | |
1244 | struct perf_evsel *leader = evsel->leader; | |
1245 | int fd; | |
1246 | ||
823254ed | 1247 | if (perf_evsel__is_group_leader(evsel)) |
6a4bb04c JO |
1248 | return -1; |
1249 | ||
1250 | /* | |
1251 | * Leader must be already processed/open, | |
1252 | * if not it's a bug. | |
1253 | */ | |
1254 | BUG_ON(!leader->fd); | |
1255 | ||
1256 | fd = FD(leader, cpu, thread); | |
1257 | BUG_ON(fd == -1); | |
1258 | ||
1259 | return fd; | |
1260 | } | |
1261 | ||
2c5e8c52 PZ |
1262 | struct bit_names { |
1263 | int bit; | |
1264 | const char *name; | |
1265 | }; | |
1266 | ||
1267 | static void __p_bits(char *buf, size_t size, u64 value, struct bit_names *bits) | |
1268 | { | |
1269 | bool first_bit = true; | |
1270 | int i = 0; | |
1271 | ||
1272 | do { | |
1273 | if (value & bits[i].bit) { | |
1274 | buf += scnprintf(buf, size, "%s%s", first_bit ? "" : "|", bits[i].name); | |
1275 | first_bit = false; | |
1276 | } | |
1277 | } while (bits[++i].name != NULL); | |
1278 | } | |
1279 | ||
1280 | static void __p_sample_type(char *buf, size_t size, u64 value) | |
1281 | { | |
1282 | #define bit_name(n) { PERF_SAMPLE_##n, #n } | |
1283 | struct bit_names bits[] = { | |
1284 | bit_name(IP), bit_name(TID), bit_name(TIME), bit_name(ADDR), | |
1285 | bit_name(READ), bit_name(CALLCHAIN), bit_name(ID), bit_name(CPU), | |
1286 | bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW), | |
1287 | bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER), | |
84422592 | 1288 | bit_name(IDENTIFIER), bit_name(REGS_INTR), bit_name(DATA_SRC), |
dcdd184b | 1289 | bit_name(WEIGHT), |
2c5e8c52 PZ |
1290 | { .name = NULL, } |
1291 | }; | |
1292 | #undef bit_name | |
1293 | __p_bits(buf, size, value, bits); | |
1294 | } | |
1295 | ||
a213b92e ACM |
1296 | static void __p_branch_sample_type(char *buf, size_t size, u64 value) |
1297 | { | |
1298 | #define bit_name(n) { PERF_SAMPLE_BRANCH_##n, #n } | |
1299 | struct bit_names bits[] = { | |
1300 | bit_name(USER), bit_name(KERNEL), bit_name(HV), bit_name(ANY), | |
1301 | bit_name(ANY_CALL), bit_name(ANY_RETURN), bit_name(IND_CALL), | |
1302 | bit_name(ABORT_TX), bit_name(IN_TX), bit_name(NO_TX), | |
1303 | bit_name(COND), bit_name(CALL_STACK), bit_name(IND_JUMP), | |
1304 | bit_name(CALL), bit_name(NO_FLAGS), bit_name(NO_CYCLES), | |
1305 | { .name = NULL, } | |
1306 | }; | |
1307 | #undef bit_name | |
1308 | __p_bits(buf, size, value, bits); | |
1309 | } | |
1310 | ||
2c5e8c52 PZ |
1311 | static void __p_read_format(char *buf, size_t size, u64 value) |
1312 | { | |
1313 | #define bit_name(n) { PERF_FORMAT_##n, #n } | |
1314 | struct bit_names bits[] = { | |
1315 | bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING), | |
1316 | bit_name(ID), bit_name(GROUP), | |
1317 | { .name = NULL, } | |
1318 | }; | |
1319 | #undef bit_name | |
1320 | __p_bits(buf, size, value, bits); | |
1321 | } | |
1322 | ||
1323 | #define BUF_SIZE 1024 | |
1324 | ||
7310aed7 | 1325 | #define p_hex(val) snprintf(buf, BUF_SIZE, "%#"PRIx64, (uint64_t)(val)) |
2c5e8c52 PZ |
1326 | #define p_unsigned(val) snprintf(buf, BUF_SIZE, "%"PRIu64, (uint64_t)(val)) |
1327 | #define p_signed(val) snprintf(buf, BUF_SIZE, "%"PRId64, (int64_t)(val)) | |
1328 | #define p_sample_type(val) __p_sample_type(buf, BUF_SIZE, val) | |
a213b92e | 1329 | #define p_branch_sample_type(val) __p_branch_sample_type(buf, BUF_SIZE, val) |
2c5e8c52 PZ |
1330 | #define p_read_format(val) __p_read_format(buf, BUF_SIZE, val) |
1331 | ||
1332 | #define PRINT_ATTRn(_n, _f, _p) \ | |
1333 | do { \ | |
1334 | if (attr->_f) { \ | |
1335 | _p(attr->_f); \ | |
1336 | ret += attr__fprintf(fp, _n, buf, priv);\ | |
1337 | } \ | |
1338 | } while (0) | |
1339 | ||
1340 | #define PRINT_ATTRf(_f, _p) PRINT_ATTRn(#_f, _f, _p) | |
1341 | ||
1342 | int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr, | |
1343 | attr__fprintf_f attr__fprintf, void *priv) | |
1344 | { | |
1345 | char buf[BUF_SIZE]; | |
1346 | int ret = 0; | |
1347 | ||
1348 | PRINT_ATTRf(type, p_unsigned); | |
1349 | PRINT_ATTRf(size, p_unsigned); | |
1350 | PRINT_ATTRf(config, p_hex); | |
1351 | PRINT_ATTRn("{ sample_period, sample_freq }", sample_period, p_unsigned); | |
1352 | PRINT_ATTRf(sample_type, p_sample_type); | |
1353 | PRINT_ATTRf(read_format, p_read_format); | |
1354 | ||
1355 | PRINT_ATTRf(disabled, p_unsigned); | |
1356 | PRINT_ATTRf(inherit, p_unsigned); | |
1357 | PRINT_ATTRf(pinned, p_unsigned); | |
1358 | PRINT_ATTRf(exclusive, p_unsigned); | |
1359 | PRINT_ATTRf(exclude_user, p_unsigned); | |
1360 | PRINT_ATTRf(exclude_kernel, p_unsigned); | |
1361 | PRINT_ATTRf(exclude_hv, p_unsigned); | |
1362 | PRINT_ATTRf(exclude_idle, p_unsigned); | |
1363 | PRINT_ATTRf(mmap, p_unsigned); | |
1364 | PRINT_ATTRf(comm, p_unsigned); | |
1365 | PRINT_ATTRf(freq, p_unsigned); | |
1366 | PRINT_ATTRf(inherit_stat, p_unsigned); | |
1367 | PRINT_ATTRf(enable_on_exec, p_unsigned); | |
1368 | PRINT_ATTRf(task, p_unsigned); | |
1369 | PRINT_ATTRf(watermark, p_unsigned); | |
1370 | PRINT_ATTRf(precise_ip, p_unsigned); | |
1371 | PRINT_ATTRf(mmap_data, p_unsigned); | |
1372 | PRINT_ATTRf(sample_id_all, p_unsigned); | |
1373 | PRINT_ATTRf(exclude_host, p_unsigned); | |
1374 | PRINT_ATTRf(exclude_guest, p_unsigned); | |
1375 | PRINT_ATTRf(exclude_callchain_kernel, p_unsigned); | |
1376 | PRINT_ATTRf(exclude_callchain_user, p_unsigned); | |
1377 | PRINT_ATTRf(mmap2, p_unsigned); | |
1378 | PRINT_ATTRf(comm_exec, p_unsigned); | |
1379 | PRINT_ATTRf(use_clockid, p_unsigned); | |
0286039f | 1380 | PRINT_ATTRf(context_switch, p_unsigned); |
0a241ef4 | 1381 | PRINT_ATTRf(write_backward, p_unsigned); |
2c5e8c52 PZ |
1382 | |
1383 | PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned); | |
1384 | PRINT_ATTRf(bp_type, p_unsigned); | |
1385 | PRINT_ATTRn("{ bp_addr, config1 }", bp_addr, p_hex); | |
1386 | PRINT_ATTRn("{ bp_len, config2 }", bp_len, p_hex); | |
a213b92e | 1387 | PRINT_ATTRf(branch_sample_type, p_branch_sample_type); |
2c5e8c52 PZ |
1388 | PRINT_ATTRf(sample_regs_user, p_hex); |
1389 | PRINT_ATTRf(sample_stack_user, p_unsigned); | |
1390 | PRINT_ATTRf(clockid, p_signed); | |
1391 | PRINT_ATTRf(sample_regs_intr, p_hex); | |
70d73de4 | 1392 | PRINT_ATTRf(aux_watermark, p_unsigned); |
792d48b4 | 1393 | PRINT_ATTRf(sample_max_stack, p_unsigned); |
e3e1a54f AH |
1394 | |
1395 | return ret; | |
1396 | } | |
1397 | ||
2c5e8c52 PZ |
1398 | static int __open_attr__fprintf(FILE *fp, const char *name, const char *val, |
1399 | void *priv __attribute__((unused))) | |
1400 | { | |
1401 | return fprintf(fp, " %-32s %s\n", name, val); | |
1402 | } | |
1403 | ||
0252208e | 1404 | static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, |
6a4bb04c | 1405 | struct thread_map *threads) |
48290609 | 1406 | { |
bf8e8f4b | 1407 | int cpu, thread, nthreads; |
57480d2c | 1408 | unsigned long flags = PERF_FLAG_FD_CLOEXEC; |
727ab04e | 1409 | int pid = -1, err; |
bec19672 | 1410 | enum { NO_CHANGE, SET_TO_MAX, INCREASED_MAX } set_rlimit = NO_CHANGE; |
48290609 | 1411 | |
32a951b4 ACM |
1412 | if (perf_missing_features.write_backward && evsel->attr.write_backward) |
1413 | return -EINVAL; | |
1414 | ||
bf8e8f4b AH |
1415 | if (evsel->system_wide) |
1416 | nthreads = 1; | |
1417 | else | |
1418 | nthreads = threads->nr; | |
1419 | ||
0252208e | 1420 | if (evsel->fd == NULL && |
bf8e8f4b | 1421 | perf_evsel__alloc_fd(evsel, cpus->nr, nthreads) < 0) |
727ab04e | 1422 | return -ENOMEM; |
4eed11d5 | 1423 | |
023695d9 | 1424 | if (evsel->cgrp) { |
57480d2c | 1425 | flags |= PERF_FLAG_PID_CGROUP; |
023695d9 SE |
1426 | pid = evsel->cgrp->fd; |
1427 | } | |
1428 | ||
594ac61a | 1429 | fallback_missing_features: |
814c8c38 PZ |
1430 | if (perf_missing_features.clockid_wrong) |
1431 | evsel->attr.clockid = CLOCK_MONOTONIC; /* should always work */ | |
1432 | if (perf_missing_features.clockid) { | |
1433 | evsel->attr.use_clockid = 0; | |
1434 | evsel->attr.clockid = 0; | |
1435 | } | |
57480d2c YD |
1436 | if (perf_missing_features.cloexec) |
1437 | flags &= ~(unsigned long)PERF_FLAG_FD_CLOEXEC; | |
5c5e854b SE |
1438 | if (perf_missing_features.mmap2) |
1439 | evsel->attr.mmap2 = 0; | |
594ac61a ACM |
1440 | if (perf_missing_features.exclude_guest) |
1441 | evsel->attr.exclude_guest = evsel->attr.exclude_host = 0; | |
bd0f8895 AK |
1442 | if (perf_missing_features.lbr_flags) |
1443 | evsel->attr.branch_sample_type &= ~(PERF_SAMPLE_BRANCH_NO_FLAGS | | |
1444 | PERF_SAMPLE_BRANCH_NO_CYCLES); | |
594ac61a ACM |
1445 | retry_sample_id: |
1446 | if (perf_missing_features.sample_id_all) | |
1447 | evsel->attr.sample_id_all = 0; | |
1448 | ||
2c5e8c52 PZ |
1449 | if (verbose >= 2) { |
1450 | fprintf(stderr, "%.60s\n", graph_dotted_line); | |
1451 | fprintf(stderr, "perf_event_attr:\n"); | |
1452 | perf_event_attr__fprintf(stderr, &evsel->attr, __open_attr__fprintf, NULL); | |
1453 | fprintf(stderr, "%.60s\n", graph_dotted_line); | |
1454 | } | |
e3e1a54f | 1455 | |
86bd5e86 | 1456 | for (cpu = 0; cpu < cpus->nr; cpu++) { |
9d04f178 | 1457 | |
bf8e8f4b | 1458 | for (thread = 0; thread < nthreads; thread++) { |
6a4bb04c | 1459 | int group_fd; |
023695d9 | 1460 | |
bf8e8f4b | 1461 | if (!evsel->cgrp && !evsel->system_wide) |
e13798c7 | 1462 | pid = thread_map__pid(threads, thread); |
023695d9 | 1463 | |
6a4bb04c | 1464 | group_fd = get_group_fd(evsel, cpu, thread); |
bec19672 | 1465 | retry_open: |
a33f6efc | 1466 | pr_debug2("sys_perf_event_open: pid %d cpu %d group_fd %d flags %#lx\n", |
e3e1a54f AH |
1467 | pid, cpus->map[cpu], group_fd, flags); |
1468 | ||
0252208e | 1469 | FD(evsel, cpu, thread) = sys_perf_event_open(&evsel->attr, |
023695d9 | 1470 | pid, |
f08199d3 | 1471 | cpus->map[cpu], |
023695d9 | 1472 | group_fd, flags); |
727ab04e ACM |
1473 | if (FD(evsel, cpu, thread) < 0) { |
1474 | err = -errno; | |
a33f6efc | 1475 | pr_debug2("sys_perf_event_open failed, error %d\n", |
f852fd62 | 1476 | err); |
594ac61a | 1477 | goto try_fallback; |
727ab04e | 1478 | } |
1f45b1d4 WN |
1479 | |
1480 | if (evsel->bpf_fd >= 0) { | |
1481 | int evt_fd = FD(evsel, cpu, thread); | |
1482 | int bpf_fd = evsel->bpf_fd; | |
1483 | ||
1484 | err = ioctl(evt_fd, | |
1485 | PERF_EVENT_IOC_SET_BPF, | |
1486 | bpf_fd); | |
1487 | if (err && errno != EEXIST) { | |
1488 | pr_err("failed to attach bpf fd %d: %s\n", | |
1489 | bpf_fd, strerror(errno)); | |
1490 | err = -EINVAL; | |
1491 | goto out_close; | |
1492 | } | |
1493 | } | |
1494 | ||
bec19672 | 1495 | set_rlimit = NO_CHANGE; |
814c8c38 PZ |
1496 | |
1497 | /* | |
1498 | * If we succeeded but had to kill clockid, fail and | |
1499 | * have perf_evsel__open_strerror() print us a nice | |
1500 | * error. | |
1501 | */ | |
1502 | if (perf_missing_features.clockid || | |
1503 | perf_missing_features.clockid_wrong) { | |
1504 | err = -EINVAL; | |
1505 | goto out_close; | |
1506 | } | |
0252208e | 1507 | } |
48290609 ACM |
1508 | } |
1509 | ||
1510 | return 0; | |
1511 | ||
594ac61a | 1512 | try_fallback: |
bec19672 AK |
1513 | /* |
1514 | * perf stat needs between 5 and 22 fds per CPU. When we run out | |
1515 | * of them try to increase the limits. | |
1516 | */ | |
1517 | if (err == -EMFILE && set_rlimit < INCREASED_MAX) { | |
1518 | struct rlimit l; | |
1519 | int old_errno = errno; | |
1520 | ||
1521 | if (getrlimit(RLIMIT_NOFILE, &l) == 0) { | |
1522 | if (set_rlimit == NO_CHANGE) | |
1523 | l.rlim_cur = l.rlim_max; | |
1524 | else { | |
1525 | l.rlim_cur = l.rlim_max + 1000; | |
1526 | l.rlim_max = l.rlim_cur; | |
1527 | } | |
1528 | if (setrlimit(RLIMIT_NOFILE, &l) == 0) { | |
1529 | set_rlimit++; | |
1530 | errno = old_errno; | |
1531 | goto retry_open; | |
1532 | } | |
1533 | } | |
1534 | errno = old_errno; | |
1535 | } | |
1536 | ||
594ac61a ACM |
1537 | if (err != -EINVAL || cpu > 0 || thread > 0) |
1538 | goto out_close; | |
1539 | ||
814c8c38 PZ |
1540 | /* |
1541 | * Must probe features in the order they were added to the | |
1542 | * perf_event_attr interface. | |
1543 | */ | |
7da36e94 ACM |
1544 | if (!perf_missing_features.write_backward && evsel->attr.write_backward) { |
1545 | perf_missing_features.write_backward = true; | |
32a951b4 | 1546 | goto out_close; |
7da36e94 | 1547 | } else if (!perf_missing_features.clockid_wrong && evsel->attr.use_clockid) { |
814c8c38 PZ |
1548 | perf_missing_features.clockid_wrong = true; |
1549 | goto fallback_missing_features; | |
1550 | } else if (!perf_missing_features.clockid && evsel->attr.use_clockid) { | |
1551 | perf_missing_features.clockid = true; | |
1552 | goto fallback_missing_features; | |
1553 | } else if (!perf_missing_features.cloexec && (flags & PERF_FLAG_FD_CLOEXEC)) { | |
57480d2c YD |
1554 | perf_missing_features.cloexec = true; |
1555 | goto fallback_missing_features; | |
1556 | } else if (!perf_missing_features.mmap2 && evsel->attr.mmap2) { | |
5c5e854b SE |
1557 | perf_missing_features.mmap2 = true; |
1558 | goto fallback_missing_features; | |
1559 | } else if (!perf_missing_features.exclude_guest && | |
1560 | (evsel->attr.exclude_guest || evsel->attr.exclude_host)) { | |
594ac61a ACM |
1561 | perf_missing_features.exclude_guest = true; |
1562 | goto fallback_missing_features; | |
1563 | } else if (!perf_missing_features.sample_id_all) { | |
1564 | perf_missing_features.sample_id_all = true; | |
1565 | goto retry_sample_id; | |
bd0f8895 AK |
1566 | } else if (!perf_missing_features.lbr_flags && |
1567 | (evsel->attr.branch_sample_type & | |
1568 | (PERF_SAMPLE_BRANCH_NO_CYCLES | | |
1569 | PERF_SAMPLE_BRANCH_NO_FLAGS))) { | |
1570 | perf_missing_features.lbr_flags = true; | |
1571 | goto fallback_missing_features; | |
594ac61a | 1572 | } |
48290609 | 1573 | out_close: |
0252208e ACM |
1574 | do { |
1575 | while (--thread >= 0) { | |
1576 | close(FD(evsel, cpu, thread)); | |
1577 | FD(evsel, cpu, thread) = -1; | |
1578 | } | |
bf8e8f4b | 1579 | thread = nthreads; |
0252208e | 1580 | } while (--cpu >= 0); |
727ab04e ACM |
1581 | return err; |
1582 | } | |
1583 | ||
1584 | void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads) | |
1585 | { | |
1586 | if (evsel->fd == NULL) | |
1587 | return; | |
1588 | ||
1589 | perf_evsel__close_fd(evsel, ncpus, nthreads); | |
1590 | perf_evsel__free_fd(evsel); | |
48290609 ACM |
1591 | } |
1592 | ||
0252208e ACM |
1593 | static struct { |
1594 | struct cpu_map map; | |
1595 | int cpus[1]; | |
1596 | } empty_cpu_map = { | |
1597 | .map.nr = 1, | |
1598 | .cpus = { -1, }, | |
1599 | }; | |
1600 | ||
1601 | static struct { | |
1602 | struct thread_map map; | |
1603 | int threads[1]; | |
1604 | } empty_thread_map = { | |
1605 | .map.nr = 1, | |
1606 | .threads = { -1, }, | |
1607 | }; | |
1608 | ||
f08199d3 | 1609 | int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, |
6a4bb04c | 1610 | struct thread_map *threads) |
48290609 | 1611 | { |
0252208e ACM |
1612 | if (cpus == NULL) { |
1613 | /* Work around old compiler warnings about strict aliasing */ | |
1614 | cpus = &empty_cpu_map.map; | |
48290609 ACM |
1615 | } |
1616 | ||
0252208e ACM |
1617 | if (threads == NULL) |
1618 | threads = &empty_thread_map.map; | |
48290609 | 1619 | |
6a4bb04c | 1620 | return __perf_evsel__open(evsel, cpus, threads); |
48290609 ACM |
1621 | } |
1622 | ||
f08199d3 | 1623 | int perf_evsel__open_per_cpu(struct perf_evsel *evsel, |
6a4bb04c | 1624 | struct cpu_map *cpus) |
48290609 | 1625 | { |
6a4bb04c | 1626 | return __perf_evsel__open(evsel, cpus, &empty_thread_map.map); |
0252208e | 1627 | } |
48290609 | 1628 | |
f08199d3 | 1629 | int perf_evsel__open_per_thread(struct perf_evsel *evsel, |
6a4bb04c | 1630 | struct thread_map *threads) |
0252208e | 1631 | { |
6a4bb04c | 1632 | return __perf_evsel__open(evsel, &empty_cpu_map.map, threads); |
48290609 | 1633 | } |
70082dd9 | 1634 | |
0807d2d8 ACM |
1635 | static int perf_evsel__parse_id_sample(const struct perf_evsel *evsel, |
1636 | const union perf_event *event, | |
1637 | struct perf_sample *sample) | |
d0dd74e8 | 1638 | { |
0807d2d8 | 1639 | u64 type = evsel->attr.sample_type; |
d0dd74e8 | 1640 | const u64 *array = event->sample.array; |
0807d2d8 | 1641 | bool swapped = evsel->needs_swap; |
37073f9e | 1642 | union u64_swap u; |
d0dd74e8 ACM |
1643 | |
1644 | array += ((event->header.size - | |
1645 | sizeof(event->header)) / sizeof(u64)) - 1; | |
1646 | ||
75562573 AH |
1647 | if (type & PERF_SAMPLE_IDENTIFIER) { |
1648 | sample->id = *array; | |
1649 | array--; | |
1650 | } | |
1651 | ||
d0dd74e8 | 1652 | if (type & PERF_SAMPLE_CPU) { |
37073f9e JO |
1653 | u.val64 = *array; |
1654 | if (swapped) { | |
1655 | /* undo swap of u64, then swap on individual u32s */ | |
1656 | u.val64 = bswap_64(u.val64); | |
1657 | u.val32[0] = bswap_32(u.val32[0]); | |
1658 | } | |
1659 | ||
1660 | sample->cpu = u.val32[0]; | |
d0dd74e8 ACM |
1661 | array--; |
1662 | } | |
1663 | ||
1664 | if (type & PERF_SAMPLE_STREAM_ID) { | |
1665 | sample->stream_id = *array; | |
1666 | array--; | |
1667 | } | |
1668 | ||
1669 | if (type & PERF_SAMPLE_ID) { | |
1670 | sample->id = *array; | |
1671 | array--; | |
1672 | } | |
1673 | ||
1674 | if (type & PERF_SAMPLE_TIME) { | |
1675 | sample->time = *array; | |
1676 | array--; | |
1677 | } | |
1678 | ||
1679 | if (type & PERF_SAMPLE_TID) { | |
37073f9e JO |
1680 | u.val64 = *array; |
1681 | if (swapped) { | |
1682 | /* undo swap of u64, then swap on individual u32s */ | |
1683 | u.val64 = bswap_64(u.val64); | |
1684 | u.val32[0] = bswap_32(u.val32[0]); | |
1685 | u.val32[1] = bswap_32(u.val32[1]); | |
1686 | } | |
1687 | ||
1688 | sample->pid = u.val32[0]; | |
1689 | sample->tid = u.val32[1]; | |
dd44bc6b | 1690 | array--; |
d0dd74e8 ACM |
1691 | } |
1692 | ||
1693 | return 0; | |
1694 | } | |
1695 | ||
03b6ea9b AH |
1696 | static inline bool overflow(const void *endp, u16 max_size, const void *offset, |
1697 | u64 size) | |
98e1da90 | 1698 | { |
03b6ea9b AH |
1699 | return size > max_size || offset + size > endp; |
1700 | } | |
98e1da90 | 1701 | |
03b6ea9b AH |
1702 | #define OVERFLOW_CHECK(offset, size, max_size) \ |
1703 | do { \ | |
1704 | if (overflow(endp, (max_size), (offset), (size))) \ | |
1705 | return -EFAULT; \ | |
1706 | } while (0) | |
98e1da90 | 1707 | |
03b6ea9b AH |
1708 | #define OVERFLOW_CHECK_u64(offset) \ |
1709 | OVERFLOW_CHECK(offset, sizeof(u64), sizeof(u64)) | |
98e1da90 | 1710 | |
a3f698fe | 1711 | int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, |
0807d2d8 | 1712 | struct perf_sample *data) |
d0dd74e8 | 1713 | { |
a3f698fe | 1714 | u64 type = evsel->attr.sample_type; |
0807d2d8 | 1715 | bool swapped = evsel->needs_swap; |
d0dd74e8 | 1716 | const u64 *array; |
03b6ea9b AH |
1717 | u16 max_size = event->header.size; |
1718 | const void *endp = (void *)event + max_size; | |
1719 | u64 sz; | |
d0dd74e8 | 1720 | |
936be503 DA |
1721 | /* |
1722 | * used for cross-endian analysis. See git commit 65014ab3 | |
1723 | * for why this goofiness is needed. | |
1724 | */ | |
6a11f92e | 1725 | union u64_swap u; |
936be503 | 1726 | |
f3bda2c9 | 1727 | memset(data, 0, sizeof(*data)); |
d0dd74e8 ACM |
1728 | data->cpu = data->pid = data->tid = -1; |
1729 | data->stream_id = data->id = data->time = -1ULL; | |
bc529086 | 1730 | data->period = evsel->attr.sample_period; |
05484298 | 1731 | data->weight = 0; |
473398a2 | 1732 | data->cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
d0dd74e8 ACM |
1733 | |
1734 | if (event->header.type != PERF_RECORD_SAMPLE) { | |
a3f698fe | 1735 | if (!evsel->attr.sample_id_all) |
d0dd74e8 | 1736 | return 0; |
0807d2d8 | 1737 | return perf_evsel__parse_id_sample(evsel, event, data); |
d0dd74e8 ACM |
1738 | } |
1739 | ||
1740 | array = event->sample.array; | |
1741 | ||
03b6ea9b AH |
1742 | /* |
1743 | * The evsel's sample_size is based on PERF_SAMPLE_MASK which includes | |
1744 | * up to PERF_SAMPLE_PERIOD. After that overflow() must be used to | |
1745 | * check the format does not go past the end of the event. | |
1746 | */ | |
a3f698fe | 1747 | if (evsel->sample_size + sizeof(event->header) > event->header.size) |
a2854124 FW |
1748 | return -EFAULT; |
1749 | ||
75562573 AH |
1750 | data->id = -1ULL; |
1751 | if (type & PERF_SAMPLE_IDENTIFIER) { | |
1752 | data->id = *array; | |
1753 | array++; | |
1754 | } | |
1755 | ||
d0dd74e8 | 1756 | if (type & PERF_SAMPLE_IP) { |
ef89325f | 1757 | data->ip = *array; |
d0dd74e8 ACM |
1758 | array++; |
1759 | } | |
1760 | ||
1761 | if (type & PERF_SAMPLE_TID) { | |
936be503 DA |
1762 | u.val64 = *array; |
1763 | if (swapped) { | |
1764 | /* undo swap of u64, then swap on individual u32s */ | |
1765 | u.val64 = bswap_64(u.val64); | |
1766 | u.val32[0] = bswap_32(u.val32[0]); | |
1767 | u.val32[1] = bswap_32(u.val32[1]); | |
1768 | } | |
1769 | ||
1770 | data->pid = u.val32[0]; | |
1771 | data->tid = u.val32[1]; | |
d0dd74e8 ACM |
1772 | array++; |
1773 | } | |
1774 | ||
1775 | if (type & PERF_SAMPLE_TIME) { | |
1776 | data->time = *array; | |
1777 | array++; | |
1778 | } | |
1779 | ||
7cec0922 | 1780 | data->addr = 0; |
d0dd74e8 ACM |
1781 | if (type & PERF_SAMPLE_ADDR) { |
1782 | data->addr = *array; | |
1783 | array++; | |
1784 | } | |
1785 | ||
d0dd74e8 ACM |
1786 | if (type & PERF_SAMPLE_ID) { |
1787 | data->id = *array; | |
1788 | array++; | |
1789 | } | |
1790 | ||
1791 | if (type & PERF_SAMPLE_STREAM_ID) { | |
1792 | data->stream_id = *array; | |
1793 | array++; | |
1794 | } | |
1795 | ||
1796 | if (type & PERF_SAMPLE_CPU) { | |
936be503 DA |
1797 | |
1798 | u.val64 = *array; | |
1799 | if (swapped) { | |
1800 | /* undo swap of u64, then swap on individual u32s */ | |
1801 | u.val64 = bswap_64(u.val64); | |
1802 | u.val32[0] = bswap_32(u.val32[0]); | |
1803 | } | |
1804 | ||
1805 | data->cpu = u.val32[0]; | |
d0dd74e8 ACM |
1806 | array++; |
1807 | } | |
1808 | ||
1809 | if (type & PERF_SAMPLE_PERIOD) { | |
1810 | data->period = *array; | |
1811 | array++; | |
1812 | } | |
1813 | ||
1814 | if (type & PERF_SAMPLE_READ) { | |
9ede473c JO |
1815 | u64 read_format = evsel->attr.read_format; |
1816 | ||
03b6ea9b | 1817 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
1818 | if (read_format & PERF_FORMAT_GROUP) |
1819 | data->read.group.nr = *array; | |
1820 | else | |
1821 | data->read.one.value = *array; | |
1822 | ||
1823 | array++; | |
1824 | ||
1825 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) { | |
03b6ea9b | 1826 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
1827 | data->read.time_enabled = *array; |
1828 | array++; | |
1829 | } | |
1830 | ||
1831 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) { | |
03b6ea9b | 1832 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
1833 | data->read.time_running = *array; |
1834 | array++; | |
1835 | } | |
1836 | ||
1837 | /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ | |
1838 | if (read_format & PERF_FORMAT_GROUP) { | |
03b6ea9b AH |
1839 | const u64 max_group_nr = UINT64_MAX / |
1840 | sizeof(struct sample_read_value); | |
1841 | ||
1842 | if (data->read.group.nr > max_group_nr) | |
1843 | return -EFAULT; | |
1844 | sz = data->read.group.nr * | |
1845 | sizeof(struct sample_read_value); | |
1846 | OVERFLOW_CHECK(array, sz, max_size); | |
1847 | data->read.group.values = | |
1848 | (struct sample_read_value *)array; | |
1849 | array = (void *)array + sz; | |
9ede473c | 1850 | } else { |
03b6ea9b | 1851 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
1852 | data->read.one.id = *array; |
1853 | array++; | |
1854 | } | |
d0dd74e8 ACM |
1855 | } |
1856 | ||
1857 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
03b6ea9b | 1858 | const u64 max_callchain_nr = UINT64_MAX / sizeof(u64); |
98e1da90 | 1859 | |
03b6ea9b AH |
1860 | OVERFLOW_CHECK_u64(array); |
1861 | data->callchain = (struct ip_callchain *)array++; | |
1862 | if (data->callchain->nr > max_callchain_nr) | |
98e1da90 | 1863 | return -EFAULT; |
03b6ea9b AH |
1864 | sz = data->callchain->nr * sizeof(u64); |
1865 | OVERFLOW_CHECK(array, sz, max_size); | |
1866 | array = (void *)array + sz; | |
d0dd74e8 ACM |
1867 | } |
1868 | ||
1869 | if (type & PERF_SAMPLE_RAW) { | |
03b6ea9b | 1870 | OVERFLOW_CHECK_u64(array); |
936be503 DA |
1871 | u.val64 = *array; |
1872 | if (WARN_ONCE(swapped, | |
1873 | "Endianness of raw data not corrected!\n")) { | |
1874 | /* undo swap of u64, then swap on individual u32s */ | |
1875 | u.val64 = bswap_64(u.val64); | |
1876 | u.val32[0] = bswap_32(u.val32[0]); | |
1877 | u.val32[1] = bswap_32(u.val32[1]); | |
1878 | } | |
936be503 | 1879 | data->raw_size = u.val32[0]; |
03b6ea9b | 1880 | array = (void *)array + sizeof(u32); |
98e1da90 | 1881 | |
03b6ea9b AH |
1882 | OVERFLOW_CHECK(array, data->raw_size, max_size); |
1883 | data->raw_data = (void *)array; | |
1884 | array = (void *)array + data->raw_size; | |
d0dd74e8 ACM |
1885 | } |
1886 | ||
b5387528 | 1887 | if (type & PERF_SAMPLE_BRANCH_STACK) { |
03b6ea9b AH |
1888 | const u64 max_branch_nr = UINT64_MAX / |
1889 | sizeof(struct branch_entry); | |
b5387528 | 1890 | |
03b6ea9b AH |
1891 | OVERFLOW_CHECK_u64(array); |
1892 | data->branch_stack = (struct branch_stack *)array++; | |
b5387528 | 1893 | |
03b6ea9b AH |
1894 | if (data->branch_stack->nr > max_branch_nr) |
1895 | return -EFAULT; | |
b5387528 | 1896 | sz = data->branch_stack->nr * sizeof(struct branch_entry); |
03b6ea9b AH |
1897 | OVERFLOW_CHECK(array, sz, max_size); |
1898 | array = (void *)array + sz; | |
b5387528 | 1899 | } |
0f6a3015 JO |
1900 | |
1901 | if (type & PERF_SAMPLE_REGS_USER) { | |
03b6ea9b | 1902 | OVERFLOW_CHECK_u64(array); |
5b95a4a3 AH |
1903 | data->user_regs.abi = *array; |
1904 | array++; | |
0f6a3015 | 1905 | |
5b95a4a3 | 1906 | if (data->user_regs.abi) { |
352ea45a | 1907 | u64 mask = evsel->attr.sample_regs_user; |
03b6ea9b | 1908 | |
352ea45a | 1909 | sz = hweight_long(mask) * sizeof(u64); |
03b6ea9b | 1910 | OVERFLOW_CHECK(array, sz, max_size); |
352ea45a | 1911 | data->user_regs.mask = mask; |
0f6a3015 | 1912 | data->user_regs.regs = (u64 *)array; |
03b6ea9b | 1913 | array = (void *)array + sz; |
0f6a3015 JO |
1914 | } |
1915 | } | |
1916 | ||
1917 | if (type & PERF_SAMPLE_STACK_USER) { | |
03b6ea9b AH |
1918 | OVERFLOW_CHECK_u64(array); |
1919 | sz = *array++; | |
0f6a3015 JO |
1920 | |
1921 | data->user_stack.offset = ((char *)(array - 1) | |
1922 | - (char *) event); | |
1923 | ||
03b6ea9b | 1924 | if (!sz) { |
0f6a3015 JO |
1925 | data->user_stack.size = 0; |
1926 | } else { | |
03b6ea9b | 1927 | OVERFLOW_CHECK(array, sz, max_size); |
0f6a3015 | 1928 | data->user_stack.data = (char *)array; |
03b6ea9b AH |
1929 | array = (void *)array + sz; |
1930 | OVERFLOW_CHECK_u64(array); | |
54bd2692 | 1931 | data->user_stack.size = *array++; |
a65cb4b9 JO |
1932 | if (WARN_ONCE(data->user_stack.size > sz, |
1933 | "user stack dump failure\n")) | |
1934 | return -EFAULT; | |
0f6a3015 JO |
1935 | } |
1936 | } | |
1937 | ||
05484298 AK |
1938 | data->weight = 0; |
1939 | if (type & PERF_SAMPLE_WEIGHT) { | |
03b6ea9b | 1940 | OVERFLOW_CHECK_u64(array); |
05484298 AK |
1941 | data->weight = *array; |
1942 | array++; | |
1943 | } | |
1944 | ||
98a3b32c SE |
1945 | data->data_src = PERF_MEM_DATA_SRC_NONE; |
1946 | if (type & PERF_SAMPLE_DATA_SRC) { | |
03b6ea9b | 1947 | OVERFLOW_CHECK_u64(array); |
98a3b32c SE |
1948 | data->data_src = *array; |
1949 | array++; | |
1950 | } | |
1951 | ||
475eeab9 AK |
1952 | data->transaction = 0; |
1953 | if (type & PERF_SAMPLE_TRANSACTION) { | |
87b95524 | 1954 | OVERFLOW_CHECK_u64(array); |
475eeab9 AK |
1955 | data->transaction = *array; |
1956 | array++; | |
1957 | } | |
1958 | ||
6a21c0b5 SE |
1959 | data->intr_regs.abi = PERF_SAMPLE_REGS_ABI_NONE; |
1960 | if (type & PERF_SAMPLE_REGS_INTR) { | |
1961 | OVERFLOW_CHECK_u64(array); | |
1962 | data->intr_regs.abi = *array; | |
1963 | array++; | |
1964 | ||
1965 | if (data->intr_regs.abi != PERF_SAMPLE_REGS_ABI_NONE) { | |
1966 | u64 mask = evsel->attr.sample_regs_intr; | |
1967 | ||
1968 | sz = hweight_long(mask) * sizeof(u64); | |
1969 | OVERFLOW_CHECK(array, sz, max_size); | |
1970 | data->intr_regs.mask = mask; | |
1971 | data->intr_regs.regs = (u64 *)array; | |
1972 | array = (void *)array + sz; | |
1973 | } | |
1974 | } | |
1975 | ||
d0dd74e8 ACM |
1976 | return 0; |
1977 | } | |
74eec26f | 1978 | |
b1cf6f65 | 1979 | size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type, |
352ea45a | 1980 | u64 read_format) |
b1cf6f65 AH |
1981 | { |
1982 | size_t sz, result = sizeof(struct sample_event); | |
1983 | ||
1984 | if (type & PERF_SAMPLE_IDENTIFIER) | |
1985 | result += sizeof(u64); | |
1986 | ||
1987 | if (type & PERF_SAMPLE_IP) | |
1988 | result += sizeof(u64); | |
1989 | ||
1990 | if (type & PERF_SAMPLE_TID) | |
1991 | result += sizeof(u64); | |
1992 | ||
1993 | if (type & PERF_SAMPLE_TIME) | |
1994 | result += sizeof(u64); | |
1995 | ||
1996 | if (type & PERF_SAMPLE_ADDR) | |
1997 | result += sizeof(u64); | |
1998 | ||
1999 | if (type & PERF_SAMPLE_ID) | |
2000 | result += sizeof(u64); | |
2001 | ||
2002 | if (type & PERF_SAMPLE_STREAM_ID) | |
2003 | result += sizeof(u64); | |
2004 | ||
2005 | if (type & PERF_SAMPLE_CPU) | |
2006 | result += sizeof(u64); | |
2007 | ||
2008 | if (type & PERF_SAMPLE_PERIOD) | |
2009 | result += sizeof(u64); | |
2010 | ||
2011 | if (type & PERF_SAMPLE_READ) { | |
2012 | result += sizeof(u64); | |
2013 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) | |
2014 | result += sizeof(u64); | |
2015 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) | |
2016 | result += sizeof(u64); | |
2017 | /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ | |
2018 | if (read_format & PERF_FORMAT_GROUP) { | |
2019 | sz = sample->read.group.nr * | |
2020 | sizeof(struct sample_read_value); | |
2021 | result += sz; | |
2022 | } else { | |
2023 | result += sizeof(u64); | |
2024 | } | |
2025 | } | |
2026 | ||
2027 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
2028 | sz = (sample->callchain->nr + 1) * sizeof(u64); | |
2029 | result += sz; | |
2030 | } | |
2031 | ||
2032 | if (type & PERF_SAMPLE_RAW) { | |
2033 | result += sizeof(u32); | |
2034 | result += sample->raw_size; | |
2035 | } | |
2036 | ||
2037 | if (type & PERF_SAMPLE_BRANCH_STACK) { | |
2038 | sz = sample->branch_stack->nr * sizeof(struct branch_entry); | |
2039 | sz += sizeof(u64); | |
2040 | result += sz; | |
2041 | } | |
2042 | ||
2043 | if (type & PERF_SAMPLE_REGS_USER) { | |
2044 | if (sample->user_regs.abi) { | |
2045 | result += sizeof(u64); | |
352ea45a | 2046 | sz = hweight_long(sample->user_regs.mask) * sizeof(u64); |
b1cf6f65 AH |
2047 | result += sz; |
2048 | } else { | |
2049 | result += sizeof(u64); | |
2050 | } | |
2051 | } | |
2052 | ||
2053 | if (type & PERF_SAMPLE_STACK_USER) { | |
2054 | sz = sample->user_stack.size; | |
2055 | result += sizeof(u64); | |
2056 | if (sz) { | |
2057 | result += sz; | |
2058 | result += sizeof(u64); | |
2059 | } | |
2060 | } | |
2061 | ||
2062 | if (type & PERF_SAMPLE_WEIGHT) | |
2063 | result += sizeof(u64); | |
2064 | ||
2065 | if (type & PERF_SAMPLE_DATA_SRC) | |
2066 | result += sizeof(u64); | |
2067 | ||
42d88910 AH |
2068 | if (type & PERF_SAMPLE_TRANSACTION) |
2069 | result += sizeof(u64); | |
2070 | ||
6a21c0b5 SE |
2071 | if (type & PERF_SAMPLE_REGS_INTR) { |
2072 | if (sample->intr_regs.abi) { | |
2073 | result += sizeof(u64); | |
2074 | sz = hweight_long(sample->intr_regs.mask) * sizeof(u64); | |
2075 | result += sz; | |
2076 | } else { | |
2077 | result += sizeof(u64); | |
2078 | } | |
2079 | } | |
2080 | ||
b1cf6f65 AH |
2081 | return result; |
2082 | } | |
2083 | ||
74eec26f | 2084 | int perf_event__synthesize_sample(union perf_event *event, u64 type, |
352ea45a | 2085 | u64 read_format, |
74eec26f AV |
2086 | const struct perf_sample *sample, |
2087 | bool swapped) | |
2088 | { | |
2089 | u64 *array; | |
d03f2170 | 2090 | size_t sz; |
74eec26f AV |
2091 | /* |
2092 | * used for cross-endian analysis. See git commit 65014ab3 | |
2093 | * for why this goofiness is needed. | |
2094 | */ | |
6a11f92e | 2095 | union u64_swap u; |
74eec26f AV |
2096 | |
2097 | array = event->sample.array; | |
2098 | ||
75562573 AH |
2099 | if (type & PERF_SAMPLE_IDENTIFIER) { |
2100 | *array = sample->id; | |
2101 | array++; | |
2102 | } | |
2103 | ||
74eec26f | 2104 | if (type & PERF_SAMPLE_IP) { |
ef89325f | 2105 | *array = sample->ip; |
74eec26f AV |
2106 | array++; |
2107 | } | |
2108 | ||
2109 | if (type & PERF_SAMPLE_TID) { | |
2110 | u.val32[0] = sample->pid; | |
2111 | u.val32[1] = sample->tid; | |
2112 | if (swapped) { | |
2113 | /* | |
a3f698fe | 2114 | * Inverse of what is done in perf_evsel__parse_sample |
74eec26f AV |
2115 | */ |
2116 | u.val32[0] = bswap_32(u.val32[0]); | |
2117 | u.val32[1] = bswap_32(u.val32[1]); | |
2118 | u.val64 = bswap_64(u.val64); | |
2119 | } | |
2120 | ||
2121 | *array = u.val64; | |
2122 | array++; | |
2123 | } | |
2124 | ||
2125 | if (type & PERF_SAMPLE_TIME) { | |
2126 | *array = sample->time; | |
2127 | array++; | |
2128 | } | |
2129 | ||
2130 | if (type & PERF_SAMPLE_ADDR) { | |
2131 | *array = sample->addr; | |
2132 | array++; | |
2133 | } | |
2134 | ||
2135 | if (type & PERF_SAMPLE_ID) { | |
2136 | *array = sample->id; | |
2137 | array++; | |
2138 | } | |
2139 | ||
2140 | if (type & PERF_SAMPLE_STREAM_ID) { | |
2141 | *array = sample->stream_id; | |
2142 | array++; | |
2143 | } | |
2144 | ||
2145 | if (type & PERF_SAMPLE_CPU) { | |
2146 | u.val32[0] = sample->cpu; | |
2147 | if (swapped) { | |
2148 | /* | |
a3f698fe | 2149 | * Inverse of what is done in perf_evsel__parse_sample |
74eec26f AV |
2150 | */ |
2151 | u.val32[0] = bswap_32(u.val32[0]); | |
2152 | u.val64 = bswap_64(u.val64); | |
2153 | } | |
2154 | *array = u.val64; | |
2155 | array++; | |
2156 | } | |
2157 | ||
2158 | if (type & PERF_SAMPLE_PERIOD) { | |
2159 | *array = sample->period; | |
2160 | array++; | |
2161 | } | |
2162 | ||
d03f2170 AH |
2163 | if (type & PERF_SAMPLE_READ) { |
2164 | if (read_format & PERF_FORMAT_GROUP) | |
2165 | *array = sample->read.group.nr; | |
2166 | else | |
2167 | *array = sample->read.one.value; | |
2168 | array++; | |
2169 | ||
2170 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) { | |
2171 | *array = sample->read.time_enabled; | |
2172 | array++; | |
2173 | } | |
2174 | ||
2175 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) { | |
2176 | *array = sample->read.time_running; | |
2177 | array++; | |
2178 | } | |
2179 | ||
2180 | /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ | |
2181 | if (read_format & PERF_FORMAT_GROUP) { | |
2182 | sz = sample->read.group.nr * | |
2183 | sizeof(struct sample_read_value); | |
2184 | memcpy(array, sample->read.group.values, sz); | |
2185 | array = (void *)array + sz; | |
2186 | } else { | |
2187 | *array = sample->read.one.id; | |
2188 | array++; | |
2189 | } | |
2190 | } | |
2191 | ||
2192 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
2193 | sz = (sample->callchain->nr + 1) * sizeof(u64); | |
2194 | memcpy(array, sample->callchain, sz); | |
2195 | array = (void *)array + sz; | |
2196 | } | |
2197 | ||
2198 | if (type & PERF_SAMPLE_RAW) { | |
2199 | u.val32[0] = sample->raw_size; | |
2200 | if (WARN_ONCE(swapped, | |
2201 | "Endianness of raw data not corrected!\n")) { | |
2202 | /* | |
2203 | * Inverse of what is done in perf_evsel__parse_sample | |
2204 | */ | |
2205 | u.val32[0] = bswap_32(u.val32[0]); | |
2206 | u.val32[1] = bswap_32(u.val32[1]); | |
2207 | u.val64 = bswap_64(u.val64); | |
2208 | } | |
2209 | *array = u.val64; | |
2210 | array = (void *)array + sizeof(u32); | |
2211 | ||
2212 | memcpy(array, sample->raw_data, sample->raw_size); | |
2213 | array = (void *)array + sample->raw_size; | |
2214 | } | |
2215 | ||
2216 | if (type & PERF_SAMPLE_BRANCH_STACK) { | |
2217 | sz = sample->branch_stack->nr * sizeof(struct branch_entry); | |
2218 | sz += sizeof(u64); | |
2219 | memcpy(array, sample->branch_stack, sz); | |
2220 | array = (void *)array + sz; | |
2221 | } | |
2222 | ||
2223 | if (type & PERF_SAMPLE_REGS_USER) { | |
2224 | if (sample->user_regs.abi) { | |
2225 | *array++ = sample->user_regs.abi; | |
352ea45a | 2226 | sz = hweight_long(sample->user_regs.mask) * sizeof(u64); |
d03f2170 AH |
2227 | memcpy(array, sample->user_regs.regs, sz); |
2228 | array = (void *)array + sz; | |
2229 | } else { | |
2230 | *array++ = 0; | |
2231 | } | |
2232 | } | |
2233 | ||
2234 | if (type & PERF_SAMPLE_STACK_USER) { | |
2235 | sz = sample->user_stack.size; | |
2236 | *array++ = sz; | |
2237 | if (sz) { | |
2238 | memcpy(array, sample->user_stack.data, sz); | |
2239 | array = (void *)array + sz; | |
2240 | *array++ = sz; | |
2241 | } | |
2242 | } | |
2243 | ||
2244 | if (type & PERF_SAMPLE_WEIGHT) { | |
2245 | *array = sample->weight; | |
2246 | array++; | |
2247 | } | |
2248 | ||
2249 | if (type & PERF_SAMPLE_DATA_SRC) { | |
2250 | *array = sample->data_src; | |
2251 | array++; | |
2252 | } | |
2253 | ||
42d88910 AH |
2254 | if (type & PERF_SAMPLE_TRANSACTION) { |
2255 | *array = sample->transaction; | |
2256 | array++; | |
2257 | } | |
2258 | ||
6a21c0b5 SE |
2259 | if (type & PERF_SAMPLE_REGS_INTR) { |
2260 | if (sample->intr_regs.abi) { | |
2261 | *array++ = sample->intr_regs.abi; | |
2262 | sz = hweight_long(sample->intr_regs.mask) * sizeof(u64); | |
2263 | memcpy(array, sample->intr_regs.regs, sz); | |
2264 | array = (void *)array + sz; | |
2265 | } else { | |
2266 | *array++ = 0; | |
2267 | } | |
2268 | } | |
2269 | ||
74eec26f AV |
2270 | return 0; |
2271 | } | |
5555ded4 | 2272 | |
efd2b924 ACM |
2273 | struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name) |
2274 | { | |
2275 | return pevent_find_field(evsel->tp_format, name); | |
2276 | } | |
2277 | ||
5d2074ea | 2278 | void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample, |
5555ded4 ACM |
2279 | const char *name) |
2280 | { | |
efd2b924 | 2281 | struct format_field *field = perf_evsel__field(evsel, name); |
5555ded4 ACM |
2282 | int offset; |
2283 | ||
efd2b924 ACM |
2284 | if (!field) |
2285 | return NULL; | |
5555ded4 ACM |
2286 | |
2287 | offset = field->offset; | |
2288 | ||
2289 | if (field->flags & FIELD_IS_DYNAMIC) { | |
2290 | offset = *(int *)(sample->raw_data + field->offset); | |
2291 | offset &= 0xffff; | |
2292 | } | |
2293 | ||
2294 | return sample->raw_data + offset; | |
2295 | } | |
2296 | ||
90525176 ACM |
2297 | u64 format_field__intval(struct format_field *field, struct perf_sample *sample, |
2298 | bool needs_swap) | |
5555ded4 | 2299 | { |
e6b6f679 | 2300 | u64 value; |
90525176 | 2301 | void *ptr = sample->raw_data + field->offset; |
5555ded4 | 2302 | |
e6b6f679 ACM |
2303 | switch (field->size) { |
2304 | case 1: | |
2305 | return *(u8 *)ptr; | |
2306 | case 2: | |
2307 | value = *(u16 *)ptr; | |
2308 | break; | |
2309 | case 4: | |
2310 | value = *(u32 *)ptr; | |
2311 | break; | |
2312 | case 8: | |
e94eedab | 2313 | memcpy(&value, ptr, sizeof(u64)); |
e6b6f679 ACM |
2314 | break; |
2315 | default: | |
2316 | return 0; | |
2317 | } | |
2318 | ||
90525176 | 2319 | if (!needs_swap) |
e6b6f679 ACM |
2320 | return value; |
2321 | ||
2322 | switch (field->size) { | |
2323 | case 2: | |
2324 | return bswap_16(value); | |
2325 | case 4: | |
2326 | return bswap_32(value); | |
2327 | case 8: | |
2328 | return bswap_64(value); | |
2329 | default: | |
2330 | return 0; | |
2331 | } | |
2332 | ||
2333 | return 0; | |
5555ded4 | 2334 | } |
0698aedd | 2335 | |
90525176 ACM |
2336 | u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, |
2337 | const char *name) | |
2338 | { | |
2339 | struct format_field *field = perf_evsel__field(evsel, name); | |
2340 | ||
2341 | if (!field) | |
2342 | return 0; | |
2343 | ||
2344 | return field ? format_field__intval(field, sample, evsel->needs_swap) : 0; | |
2345 | } | |
2346 | ||
c0a54341 ACM |
2347 | bool perf_evsel__fallback(struct perf_evsel *evsel, int err, |
2348 | char *msg, size_t msgsize) | |
2349 | { | |
08094828 ACM |
2350 | int paranoid; |
2351 | ||
2b821cce | 2352 | if ((err == ENOENT || err == ENXIO || err == ENODEV) && |
c0a54341 ACM |
2353 | evsel->attr.type == PERF_TYPE_HARDWARE && |
2354 | evsel->attr.config == PERF_COUNT_HW_CPU_CYCLES) { | |
2355 | /* | |
2356 | * If it's cycles then fall back to hrtimer based | |
2357 | * cpu-clock-tick sw counter, which is always available even if | |
2358 | * no PMU support. | |
2359 | * | |
2360 | * PPC returns ENXIO until 2.6.37 (behavior changed with commit | |
2361 | * b0a873e). | |
2362 | */ | |
2363 | scnprintf(msg, msgsize, "%s", | |
2364 | "The cycles event is not supported, trying to fall back to cpu-clock-ticks"); | |
2365 | ||
2366 | evsel->attr.type = PERF_TYPE_SOFTWARE; | |
2367 | evsel->attr.config = PERF_COUNT_SW_CPU_CLOCK; | |
2368 | ||
04662523 | 2369 | zfree(&evsel->name); |
08094828 ACM |
2370 | return true; |
2371 | } else if (err == EACCES && !evsel->attr.exclude_kernel && | |
2372 | (paranoid = perf_event_paranoid()) > 1) { | |
2373 | const char *name = perf_evsel__name(evsel); | |
2374 | char *new_name; | |
2375 | ||
2376 | if (asprintf(&new_name, "%s%su", name, strchr(name, ':') ? "" : ":") < 0) | |
2377 | return false; | |
2378 | ||
2379 | if (evsel->name) | |
2380 | free(evsel->name); | |
2381 | evsel->name = new_name; | |
2382 | scnprintf(msg, msgsize, | |
2383 | "kernel.perf_event_paranoid=%d, trying to fall back to excluding kernel samples", paranoid); | |
2384 | evsel->attr.exclude_kernel = 1; | |
2385 | ||
c0a54341 ACM |
2386 | return true; |
2387 | } | |
2388 | ||
2389 | return false; | |
2390 | } | |
56e52e85 | 2391 | |
602ad878 | 2392 | int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target, |
56e52e85 ACM |
2393 | int err, char *msg, size_t size) |
2394 | { | |
6e81c74c MH |
2395 | char sbuf[STRERR_BUFSIZE]; |
2396 | ||
56e52e85 ACM |
2397 | switch (err) { |
2398 | case EPERM: | |
2399 | case EACCES: | |
b69e63a4 | 2400 | return scnprintf(msg, size, |
3379e0c3 BH |
2401 | "You may not have permission to collect %sstats.\n\n" |
2402 | "Consider tweaking /proc/sys/kernel/perf_event_paranoid,\n" | |
2403 | "which controls use of the performance events system by\n" | |
2404 | "unprivileged users (without CAP_SYS_ADMIN).\n\n" | |
7d173913 | 2405 | "The current value is %d:\n\n" |
3379e0c3 BH |
2406 | " -1: Allow use of (almost) all events by all users\n" |
2407 | ">= 0: Disallow raw tracepoint access by users without CAP_IOC_LOCK\n" | |
2408 | ">= 1: Disallow CPU event access by users without CAP_SYS_ADMIN\n" | |
2409 | ">= 2: Disallow kernel profiling by users without CAP_SYS_ADMIN", | |
7d173913 ACM |
2410 | target->system_wide ? "system-wide " : "", |
2411 | perf_event_paranoid()); | |
56e52e85 ACM |
2412 | case ENOENT: |
2413 | return scnprintf(msg, size, "The %s event is not supported.", | |
2414 | perf_evsel__name(evsel)); | |
2415 | case EMFILE: | |
2416 | return scnprintf(msg, size, "%s", | |
2417 | "Too many events are opened.\n" | |
18ffdfe8 JO |
2418 | "Probably the maximum number of open file descriptors has been reached.\n" |
2419 | "Hint: Try again after reducing the number of events.\n" | |
2420 | "Hint: Try increasing the limit with 'ulimit -n <limit>'"); | |
de46d526 ACM |
2421 | case ENOMEM: |
2422 | if ((evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) != 0 && | |
2423 | access("/proc/sys/kernel/perf_event_max_stack", F_OK) == 0) | |
2424 | return scnprintf(msg, size, | |
2425 | "Not enough memory to setup event with callchain.\n" | |
2426 | "Hint: Try tweaking /proc/sys/kernel/perf_event_max_stack\n" | |
2427 | "Hint: Current value: %d", sysctl_perf_event_max_stack); | |
2428 | break; | |
56e52e85 ACM |
2429 | case ENODEV: |
2430 | if (target->cpu_list) | |
2431 | return scnprintf(msg, size, "%s", | |
81d64f46 | 2432 | "No such device - did you specify an out-of-range profile CPU?"); |
56e52e85 ACM |
2433 | break; |
2434 | case EOPNOTSUPP: | |
dc89e75a VG |
2435 | if (evsel->attr.sample_period != 0) |
2436 | return scnprintf(msg, size, "%s", | |
2437 | "PMU Hardware doesn't support sampling/overflow-interrupts."); | |
56e52e85 ACM |
2438 | if (evsel->attr.precise_ip) |
2439 | return scnprintf(msg, size, "%s", | |
2440 | "\'precise\' request may not be supported. Try removing 'p' modifier."); | |
2441 | #if defined(__i386__) || defined(__x86_64__) | |
2442 | if (evsel->attr.type == PERF_TYPE_HARDWARE) | |
2443 | return scnprintf(msg, size, "%s", | |
2444 | "No hardware sampling interrupt available.\n" | |
2445 | "No APIC? If so then you can boot the kernel with the \"lapic\" boot parameter to force-enable it."); | |
2446 | #endif | |
2447 | break; | |
63914aca JO |
2448 | case EBUSY: |
2449 | if (find_process("oprofiled")) | |
2450 | return scnprintf(msg, size, | |
2451 | "The PMU counters are busy/taken by another profiler.\n" | |
2452 | "We found oprofile daemon running, please stop it and try again."); | |
2453 | break; | |
814c8c38 | 2454 | case EINVAL: |
32a951b4 | 2455 | if (evsel->attr.write_backward && perf_missing_features.write_backward) |
7da36e94 | 2456 | return scnprintf(msg, size, "Reading from overwrite event is not supported by this kernel."); |
814c8c38 PZ |
2457 | if (perf_missing_features.clockid) |
2458 | return scnprintf(msg, size, "clockid feature not supported."); | |
2459 | if (perf_missing_features.clockid_wrong) | |
2460 | return scnprintf(msg, size, "wrong clockid (%d).", clockid); | |
2461 | break; | |
56e52e85 ACM |
2462 | default: |
2463 | break; | |
2464 | } | |
2465 | ||
2466 | return scnprintf(msg, size, | |
6e81c74c | 2467 | "The sys_perf_event_open() syscall returned with %d (%s) for event (%s).\n" |
56e52e85 | 2468 | "/bin/dmesg may provide additional information.\n" |
81d64f46 | 2469 | "No CONFIG_PERF_EVENTS=y kernel support configured?", |
c8b5f2c9 | 2470 | err, str_error_r(err, sbuf, sizeof(sbuf)), |
6e81c74c | 2471 | perf_evsel__name(evsel)); |
56e52e85 | 2472 | } |
f4e47f9f RB |
2473 | |
2474 | char *perf_evsel__env_arch(struct perf_evsel *evsel) | |
2475 | { | |
2476 | if (evsel && evsel->evlist && evsel->evlist->env) | |
2477 | return evsel->evlist->env->arch; | |
2478 | return NULL; | |
2479 | } |