Commit | Line | Data |
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91007045 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
f8a95309 ACM |
2 | /* |
3 | * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> | |
4 | * | |
5 | * Parts came from builtin-{top,stat,record}.c, see those files for further | |
6 | * copyright notes. | |
f8a95309 ACM |
7 | */ |
8 | ||
936be503 | 9 | #include <byteswap.h> |
a43783ae | 10 | #include <errno.h> |
fd20e811 | 11 | #include <inttypes.h> |
0f6a3015 | 12 | #include <linux/bitops.h> |
2157f6ee | 13 | #include <api/fs/fs.h> |
4605eab3 | 14 | #include <api/fs/tracing_path.h> |
4e319027 RR |
15 | #include <traceevent/event-parse.h> |
16 | #include <linux/hw_breakpoint.h> | |
17 | #include <linux/perf_event.h> | |
0353631a | 18 | #include <linux/compiler.h> |
8dd2a131 | 19 | #include <linux/err.h> |
7f7c536f | 20 | #include <linux/zalloc.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" |
86bd5e86 | 31 | #include "cpumap.h" |
fd78260b | 32 | #include "thread_map.h" |
12864b31 | 33 | #include "target.h" |
26d33022 | 34 | #include "perf_regs.h" |
e3e1a54f | 35 | #include "debug.h" |
97978b3e | 36 | #include "trace-event.h" |
a9a3a4d9 | 37 | #include "stat.h" |
6a9fa4e3 | 38 | #include "string2.h" |
f9d8adb3 | 39 | #include "memswap.h" |
ac12f676 | 40 | #include "util/parse-branch-options.h" |
69aad6f1 | 41 | |
3052ba56 | 42 | #include <linux/ctype.h> |
3d689ed6 | 43 | |
9a831b3a | 44 | struct perf_missing_features perf_missing_features; |
594ac61a | 45 | |
814c8c38 PZ |
46 | static clockid_t clockid; |
47 | ||
32dcd021 | 48 | static int perf_evsel__no_extra_init(struct evsel *evsel __maybe_unused) |
ce8ccff5 ACM |
49 | { |
50 | return 0; | |
51 | } | |
52 | ||
10213e2f JO |
53 | void __weak test_attr__ready(void) { } |
54 | ||
32dcd021 | 55 | static void perf_evsel__no_extra_fini(struct evsel *evsel __maybe_unused) |
ce8ccff5 ACM |
56 | { |
57 | } | |
58 | ||
59 | static struct { | |
60 | size_t size; | |
32dcd021 JO |
61 | int (*init)(struct evsel *evsel); |
62 | void (*fini)(struct evsel *evsel); | |
ce8ccff5 | 63 | } perf_evsel__object = { |
32dcd021 | 64 | .size = sizeof(struct evsel), |
ce8ccff5 ACM |
65 | .init = perf_evsel__no_extra_init, |
66 | .fini = perf_evsel__no_extra_fini, | |
67 | }; | |
68 | ||
69 | int perf_evsel__object_config(size_t object_size, | |
32dcd021 JO |
70 | int (*init)(struct evsel *evsel), |
71 | void (*fini)(struct evsel *evsel)) | |
ce8ccff5 ACM |
72 | { |
73 | ||
74 | if (object_size == 0) | |
75 | goto set_methods; | |
76 | ||
77 | if (perf_evsel__object.size > object_size) | |
78 | return -EINVAL; | |
79 | ||
80 | perf_evsel__object.size = object_size; | |
81 | ||
82 | set_methods: | |
83 | if (init != NULL) | |
84 | perf_evsel__object.init = init; | |
85 | ||
86 | if (fini != NULL) | |
87 | perf_evsel__object.fini = fini; | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
c52b12ed ACM |
92 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
93 | ||
75562573 | 94 | int __perf_evsel__sample_size(u64 sample_type) |
c2a70653 ACM |
95 | { |
96 | u64 mask = sample_type & PERF_SAMPLE_MASK; | |
97 | int size = 0; | |
98 | int i; | |
99 | ||
100 | for (i = 0; i < 64; i++) { | |
101 | if (mask & (1ULL << i)) | |
102 | size++; | |
103 | } | |
104 | ||
105 | size *= sizeof(u64); | |
106 | ||
107 | return size; | |
108 | } | |
109 | ||
75562573 AH |
110 | /** |
111 | * __perf_evsel__calc_id_pos - calculate id_pos. | |
112 | * @sample_type: sample type | |
113 | * | |
114 | * This function returns the position of the event id (PERF_SAMPLE_ID or | |
115 | * PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of struct | |
116 | * sample_event. | |
117 | */ | |
118 | static int __perf_evsel__calc_id_pos(u64 sample_type) | |
119 | { | |
120 | int idx = 0; | |
121 | ||
122 | if (sample_type & PERF_SAMPLE_IDENTIFIER) | |
123 | return 0; | |
124 | ||
125 | if (!(sample_type & PERF_SAMPLE_ID)) | |
126 | return -1; | |
127 | ||
128 | if (sample_type & PERF_SAMPLE_IP) | |
129 | idx += 1; | |
130 | ||
131 | if (sample_type & PERF_SAMPLE_TID) | |
132 | idx += 1; | |
133 | ||
134 | if (sample_type & PERF_SAMPLE_TIME) | |
135 | idx += 1; | |
136 | ||
137 | if (sample_type & PERF_SAMPLE_ADDR) | |
138 | idx += 1; | |
139 | ||
140 | return idx; | |
141 | } | |
142 | ||
143 | /** | |
144 | * __perf_evsel__calc_is_pos - calculate is_pos. | |
145 | * @sample_type: sample type | |
146 | * | |
147 | * This function returns the position (counting backwards) of the event id | |
148 | * (PERF_SAMPLE_ID or PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if | |
149 | * sample_id_all is used there is an id sample appended to non-sample events. | |
150 | */ | |
151 | static int __perf_evsel__calc_is_pos(u64 sample_type) | |
152 | { | |
153 | int idx = 1; | |
154 | ||
155 | if (sample_type & PERF_SAMPLE_IDENTIFIER) | |
156 | return 1; | |
157 | ||
158 | if (!(sample_type & PERF_SAMPLE_ID)) | |
159 | return -1; | |
160 | ||
161 | if (sample_type & PERF_SAMPLE_CPU) | |
162 | idx += 1; | |
163 | ||
164 | if (sample_type & PERF_SAMPLE_STREAM_ID) | |
165 | idx += 1; | |
166 | ||
167 | return idx; | |
168 | } | |
169 | ||
32dcd021 | 170 | void perf_evsel__calc_id_pos(struct evsel *evsel) |
75562573 AH |
171 | { |
172 | evsel->id_pos = __perf_evsel__calc_id_pos(evsel->attr.sample_type); | |
173 | evsel->is_pos = __perf_evsel__calc_is_pos(evsel->attr.sample_type); | |
174 | } | |
175 | ||
32dcd021 | 176 | void __perf_evsel__set_sample_bit(struct evsel *evsel, |
7be5ebe8 ACM |
177 | enum perf_event_sample_format bit) |
178 | { | |
179 | if (!(evsel->attr.sample_type & bit)) { | |
180 | evsel->attr.sample_type |= bit; | |
181 | evsel->sample_size += sizeof(u64); | |
75562573 | 182 | perf_evsel__calc_id_pos(evsel); |
7be5ebe8 ACM |
183 | } |
184 | } | |
185 | ||
32dcd021 | 186 | void __perf_evsel__reset_sample_bit(struct evsel *evsel, |
7be5ebe8 ACM |
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 | ||
32dcd021 | 196 | void perf_evsel__set_sample_id(struct evsel *evsel, |
75562573 | 197 | bool can_sample_identifier) |
7a5a5ca5 | 198 | { |
75562573 AH |
199 | if (can_sample_identifier) { |
200 | perf_evsel__reset_sample_bit(evsel, ID); | |
201 | perf_evsel__set_sample_bit(evsel, IDENTIFIER); | |
202 | } else { | |
203 | perf_evsel__set_sample_bit(evsel, ID); | |
204 | } | |
7a5a5ca5 ACM |
205 | evsel->attr.read_format |= PERF_FORMAT_ID; |
206 | } | |
207 | ||
5496bc0c ACM |
208 | /** |
209 | * perf_evsel__is_function_event - Return whether given evsel is a function | |
210 | * trace event | |
211 | * | |
212 | * @evsel - evsel selector to be tested | |
213 | * | |
214 | * Return %true if event is function trace event | |
215 | */ | |
32dcd021 | 216 | bool perf_evsel__is_function_event(struct evsel *evsel) |
5496bc0c ACM |
217 | { |
218 | #define FUNCTION_EVENT "ftrace:function" | |
219 | ||
220 | return evsel->name && | |
221 | !strncmp(FUNCTION_EVENT, evsel->name, sizeof(FUNCTION_EVENT)); | |
222 | ||
223 | #undef FUNCTION_EVENT | |
224 | } | |
225 | ||
b4b62ee6 JO |
226 | void evsel__init(struct evsel *evsel, |
227 | struct perf_event_attr *attr, int idx) | |
ef1d1af2 ACM |
228 | { |
229 | evsel->idx = idx; | |
60b0896c | 230 | evsel->tracking = !idx; |
ef1d1af2 | 231 | evsel->attr = *attr; |
2cfda562 | 232 | evsel->leader = evsel; |
410136f5 SE |
233 | evsel->unit = ""; |
234 | evsel->scale = 1.0; | |
2fda5ada | 235 | evsel->max_events = ULONG_MAX; |
d49e4695 | 236 | evsel->evlist = NULL; |
af4a0991 | 237 | evsel->bpf_obj = NULL; |
1f45b1d4 | 238 | evsel->bpf_fd = -1; |
ef1d1af2 | 239 | INIT_LIST_HEAD(&evsel->node); |
930a2e29 | 240 | INIT_LIST_HEAD(&evsel->config_terms); |
ce8ccff5 | 241 | perf_evsel__object.init(evsel); |
bde09467 | 242 | evsel->sample_size = __perf_evsel__sample_size(attr->sample_type); |
75562573 | 243 | perf_evsel__calc_id_pos(evsel); |
15bfd2cc | 244 | evsel->cmdline_group_boundary = false; |
37932c18 | 245 | evsel->metric_expr = NULL; |
96284814 | 246 | evsel->metric_name = NULL; |
37932c18 AK |
247 | evsel->metric_events = NULL; |
248 | evsel->collect_stat = false; | |
8c5421c0 | 249 | evsel->pmu_name = NULL; |
ef1d1af2 ACM |
250 | } |
251 | ||
32dcd021 | 252 | struct evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx) |
69aad6f1 | 253 | { |
32dcd021 | 254 | struct evsel *evsel = zalloc(perf_evsel__object.size); |
69aad6f1 | 255 | |
fd8d2702 HT |
256 | if (!evsel) |
257 | return NULL; | |
b4b62ee6 | 258 | evsel__init(evsel, attr, idx); |
69aad6f1 | 259 | |
03e0a7df | 260 | if (perf_evsel__is_bpf_output(evsel)) { |
d37ba880 WN |
261 | evsel->attr.sample_type |= (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | |
262 | PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), | |
03e0a7df WN |
263 | evsel->attr.sample_period = 1; |
264 | } | |
265 | ||
0aa802a7 JO |
266 | if (perf_evsel__is_clock(evsel)) { |
267 | /* | |
268 | * The evsel->unit points to static alias->unit | |
269 | * so it's ok to use static string in here. | |
270 | */ | |
271 | static const char *unit = "msec"; | |
272 | ||
273 | evsel->unit = unit; | |
274 | evsel->scale = 1e-6; | |
275 | } | |
276 | ||
69aad6f1 ACM |
277 | return evsel; |
278 | } | |
279 | ||
f1e52f14 ACM |
280 | static bool perf_event_can_profile_kernel(void) |
281 | { | |
282 | return geteuid() == 0 || perf_event_paranoid() == -1; | |
283 | } | |
284 | ||
32dcd021 | 285 | struct evsel *perf_evsel__new_cycles(bool precise) |
7c48dcfd ACM |
286 | { |
287 | struct perf_event_attr attr = { | |
288 | .type = PERF_TYPE_HARDWARE, | |
289 | .config = PERF_COUNT_HW_CPU_CYCLES, | |
f1e52f14 | 290 | .exclude_kernel = !perf_event_can_profile_kernel(), |
7c48dcfd | 291 | }; |
32dcd021 | 292 | struct evsel *evsel; |
7c48dcfd ACM |
293 | |
294 | event_attr_init(&attr); | |
30269dc1 ACM |
295 | |
296 | if (!precise) | |
297 | goto new_event; | |
7c48dcfd | 298 | |
7a1ac110 ACM |
299 | /* |
300 | * Now let the usual logic to set up the perf_event_attr defaults | |
301 | * to kick in when we return and before perf_evsel__open() is called. | |
302 | */ | |
30269dc1 | 303 | new_event: |
365c3ae7 | 304 | evsel = evsel__new(&attr); |
7c48dcfd ACM |
305 | if (evsel == NULL) |
306 | goto out; | |
307 | ||
4e8a5c15 JO |
308 | evsel->precise_max = true; |
309 | ||
7c48dcfd | 310 | /* use asprintf() because free(evsel) assumes name is allocated */ |
ede5626d ACM |
311 | if (asprintf(&evsel->name, "cycles%s%s%.*s", |
312 | (attr.precise_ip || attr.exclude_kernel) ? ":" : "", | |
313 | attr.exclude_kernel ? "u" : "", | |
314 | attr.precise_ip ? attr.precise_ip + 1 : 0, "ppp") < 0) | |
7c48dcfd ACM |
315 | goto error_free; |
316 | out: | |
317 | return evsel; | |
318 | error_free: | |
5eb2dd2a | 319 | evsel__delete(evsel); |
7c48dcfd ACM |
320 | evsel = NULL; |
321 | goto out; | |
322 | } | |
323 | ||
8dd2a131 JO |
324 | /* |
325 | * Returns pointer with encoded error via <linux/err.h> interface. | |
326 | */ | |
32dcd021 | 327 | struct evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx) |
efd2b924 | 328 | { |
32dcd021 | 329 | struct evsel *evsel = zalloc(perf_evsel__object.size); |
8dd2a131 | 330 | int err = -ENOMEM; |
efd2b924 | 331 | |
8dd2a131 JO |
332 | if (evsel == NULL) { |
333 | goto out_err; | |
334 | } else { | |
efd2b924 | 335 | struct perf_event_attr attr = { |
0b80f8b3 ACM |
336 | .type = PERF_TYPE_TRACEPOINT, |
337 | .sample_type = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME | | |
338 | PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD), | |
efd2b924 ACM |
339 | }; |
340 | ||
e48ffe2b ACM |
341 | if (asprintf(&evsel->name, "%s:%s", sys, name) < 0) |
342 | goto out_free; | |
343 | ||
97978b3e | 344 | evsel->tp_format = trace_event__tp_format(sys, name); |
8dd2a131 JO |
345 | if (IS_ERR(evsel->tp_format)) { |
346 | err = PTR_ERR(evsel->tp_format); | |
efd2b924 | 347 | goto out_free; |
8dd2a131 | 348 | } |
efd2b924 | 349 | |
0b80f8b3 | 350 | event_attr_init(&attr); |
efd2b924 | 351 | attr.config = evsel->tp_format->id; |
0b80f8b3 | 352 | attr.sample_period = 1; |
b4b62ee6 | 353 | evsel__init(evsel, &attr, idx); |
efd2b924 ACM |
354 | } |
355 | ||
356 | return evsel; | |
357 | ||
358 | out_free: | |
74cf249d | 359 | zfree(&evsel->name); |
efd2b924 | 360 | free(evsel); |
8dd2a131 JO |
361 | out_err: |
362 | return ERR_PTR(err); | |
efd2b924 ACM |
363 | } |
364 | ||
8ad7013b | 365 | const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX] = { |
c410431c ACM |
366 | "cycles", |
367 | "instructions", | |
368 | "cache-references", | |
369 | "cache-misses", | |
370 | "branches", | |
371 | "branch-misses", | |
372 | "bus-cycles", | |
373 | "stalled-cycles-frontend", | |
374 | "stalled-cycles-backend", | |
375 | "ref-cycles", | |
376 | }; | |
377 | ||
dd4f5223 | 378 | static const char *__perf_evsel__hw_name(u64 config) |
c410431c ACM |
379 | { |
380 | if (config < PERF_COUNT_HW_MAX && perf_evsel__hw_names[config]) | |
381 | return perf_evsel__hw_names[config]; | |
382 | ||
383 | return "unknown-hardware"; | |
384 | } | |
385 | ||
32dcd021 | 386 | static int perf_evsel__add_modifiers(struct evsel *evsel, char *bf, size_t size) |
c410431c | 387 | { |
27f18617 | 388 | int colon = 0, r = 0; |
c410431c | 389 | struct perf_event_attr *attr = &evsel->attr; |
c410431c ACM |
390 | bool exclude_guest_default = false; |
391 | ||
392 | #define MOD_PRINT(context, mod) do { \ | |
393 | if (!attr->exclude_##context) { \ | |
27f18617 | 394 | if (!colon) colon = ++r; \ |
c410431c ACM |
395 | r += scnprintf(bf + r, size - r, "%c", mod); \ |
396 | } } while(0) | |
397 | ||
398 | if (attr->exclude_kernel || attr->exclude_user || attr->exclude_hv) { | |
399 | MOD_PRINT(kernel, 'k'); | |
400 | MOD_PRINT(user, 'u'); | |
401 | MOD_PRINT(hv, 'h'); | |
402 | exclude_guest_default = true; | |
403 | } | |
404 | ||
405 | if (attr->precise_ip) { | |
406 | if (!colon) | |
27f18617 | 407 | colon = ++r; |
c410431c ACM |
408 | r += scnprintf(bf + r, size - r, "%.*s", attr->precise_ip, "ppp"); |
409 | exclude_guest_default = true; | |
410 | } | |
411 | ||
412 | if (attr->exclude_host || attr->exclude_guest == exclude_guest_default) { | |
413 | MOD_PRINT(host, 'H'); | |
414 | MOD_PRINT(guest, 'G'); | |
415 | } | |
416 | #undef MOD_PRINT | |
417 | if (colon) | |
27f18617 | 418 | bf[colon - 1] = ':'; |
c410431c ACM |
419 | return r; |
420 | } | |
421 | ||
32dcd021 | 422 | static int perf_evsel__hw_name(struct evsel *evsel, char *bf, size_t size) |
27f18617 ACM |
423 | { |
424 | int r = scnprintf(bf, size, "%s", __perf_evsel__hw_name(evsel->attr.config)); | |
425 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
426 | } | |
427 | ||
8ad7013b | 428 | const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX] = { |
335c2f5d ACM |
429 | "cpu-clock", |
430 | "task-clock", | |
431 | "page-faults", | |
432 | "context-switches", | |
8ad7013b | 433 | "cpu-migrations", |
335c2f5d ACM |
434 | "minor-faults", |
435 | "major-faults", | |
436 | "alignment-faults", | |
437 | "emulation-faults", | |
d22d1a2a | 438 | "dummy", |
335c2f5d ACM |
439 | }; |
440 | ||
dd4f5223 | 441 | static const char *__perf_evsel__sw_name(u64 config) |
335c2f5d ACM |
442 | { |
443 | if (config < PERF_COUNT_SW_MAX && perf_evsel__sw_names[config]) | |
444 | return perf_evsel__sw_names[config]; | |
445 | return "unknown-software"; | |
446 | } | |
447 | ||
32dcd021 | 448 | static int perf_evsel__sw_name(struct evsel *evsel, char *bf, size_t size) |
335c2f5d ACM |
449 | { |
450 | int r = scnprintf(bf, size, "%s", __perf_evsel__sw_name(evsel->attr.config)); | |
451 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
452 | } | |
453 | ||
287e74aa JO |
454 | static int __perf_evsel__bp_name(char *bf, size_t size, u64 addr, u64 type) |
455 | { | |
456 | int r; | |
457 | ||
458 | r = scnprintf(bf, size, "mem:0x%" PRIx64 ":", addr); | |
459 | ||
460 | if (type & HW_BREAKPOINT_R) | |
461 | r += scnprintf(bf + r, size - r, "r"); | |
462 | ||
463 | if (type & HW_BREAKPOINT_W) | |
464 | r += scnprintf(bf + r, size - r, "w"); | |
465 | ||
466 | if (type & HW_BREAKPOINT_X) | |
467 | r += scnprintf(bf + r, size - r, "x"); | |
468 | ||
469 | return r; | |
470 | } | |
471 | ||
32dcd021 | 472 | static int perf_evsel__bp_name(struct evsel *evsel, char *bf, size_t size) |
287e74aa JO |
473 | { |
474 | struct perf_event_attr *attr = &evsel->attr; | |
475 | int r = __perf_evsel__bp_name(bf, size, attr->bp_addr, attr->bp_type); | |
476 | return r + perf_evsel__add_modifiers(evsel, bf + r, size - r); | |
477 | } | |
478 | ||
0b668bc9 ACM |
479 | const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX] |
480 | [PERF_EVSEL__MAX_ALIASES] = { | |
481 | { "L1-dcache", "l1-d", "l1d", "L1-data", }, | |
482 | { "L1-icache", "l1-i", "l1i", "L1-instruction", }, | |
483 | { "LLC", "L2", }, | |
484 | { "dTLB", "d-tlb", "Data-TLB", }, | |
485 | { "iTLB", "i-tlb", "Instruction-TLB", }, | |
486 | { "branch", "branches", "bpu", "btb", "bpc", }, | |
487 | { "node", }, | |
488 | }; | |
489 | ||
490 | const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX] | |
491 | [PERF_EVSEL__MAX_ALIASES] = { | |
492 | { "load", "loads", "read", }, | |
493 | { "store", "stores", "write", }, | |
494 | { "prefetch", "prefetches", "speculative-read", "speculative-load", }, | |
495 | }; | |
496 | ||
497 | const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] | |
498 | [PERF_EVSEL__MAX_ALIASES] = { | |
499 | { "refs", "Reference", "ops", "access", }, | |
500 | { "misses", "miss", }, | |
501 | }; | |
502 | ||
503 | #define C(x) PERF_COUNT_HW_CACHE_##x | |
504 | #define CACHE_READ (1 << C(OP_READ)) | |
505 | #define CACHE_WRITE (1 << C(OP_WRITE)) | |
506 | #define CACHE_PREFETCH (1 << C(OP_PREFETCH)) | |
507 | #define COP(x) (1 << x) | |
508 | ||
509 | /* | |
510 | * cache operartion stat | |
511 | * L1I : Read and prefetch only | |
512 | * ITLB and BPU : Read-only | |
513 | */ | |
514 | static unsigned long perf_evsel__hw_cache_stat[C(MAX)] = { | |
515 | [C(L1D)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
516 | [C(L1I)] = (CACHE_READ | CACHE_PREFETCH), | |
517 | [C(LL)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
518 | [C(DTLB)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
519 | [C(ITLB)] = (CACHE_READ), | |
520 | [C(BPU)] = (CACHE_READ), | |
521 | [C(NODE)] = (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH), | |
522 | }; | |
523 | ||
524 | bool perf_evsel__is_cache_op_valid(u8 type, u8 op) | |
525 | { | |
526 | if (perf_evsel__hw_cache_stat[type] & COP(op)) | |
527 | return true; /* valid */ | |
528 | else | |
529 | return false; /* invalid */ | |
530 | } | |
531 | ||
532 | int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, | |
533 | char *bf, size_t size) | |
534 | { | |
535 | if (result) { | |
536 | return scnprintf(bf, size, "%s-%s-%s", perf_evsel__hw_cache[type][0], | |
537 | perf_evsel__hw_cache_op[op][0], | |
538 | perf_evsel__hw_cache_result[result][0]); | |
539 | } | |
540 | ||
541 | return scnprintf(bf, size, "%s-%s", perf_evsel__hw_cache[type][0], | |
542 | perf_evsel__hw_cache_op[op][1]); | |
543 | } | |
544 | ||
dd4f5223 | 545 | static int __perf_evsel__hw_cache_name(u64 config, char *bf, size_t size) |
0b668bc9 ACM |
546 | { |
547 | u8 op, result, type = (config >> 0) & 0xff; | |
548 | const char *err = "unknown-ext-hardware-cache-type"; | |
549 | ||
c53412ee | 550 | if (type >= PERF_COUNT_HW_CACHE_MAX) |
0b668bc9 ACM |
551 | goto out_err; |
552 | ||
553 | op = (config >> 8) & 0xff; | |
554 | err = "unknown-ext-hardware-cache-op"; | |
c53412ee | 555 | if (op >= PERF_COUNT_HW_CACHE_OP_MAX) |
0b668bc9 ACM |
556 | goto out_err; |
557 | ||
558 | result = (config >> 16) & 0xff; | |
559 | err = "unknown-ext-hardware-cache-result"; | |
c53412ee | 560 | if (result >= PERF_COUNT_HW_CACHE_RESULT_MAX) |
0b668bc9 ACM |
561 | goto out_err; |
562 | ||
563 | err = "invalid-cache"; | |
564 | if (!perf_evsel__is_cache_op_valid(type, op)) | |
565 | goto out_err; | |
566 | ||
567 | return __perf_evsel__hw_cache_type_op_res_name(type, op, result, bf, size); | |
568 | out_err: | |
569 | return scnprintf(bf, size, "%s", err); | |
570 | } | |
571 | ||
32dcd021 | 572 | static int perf_evsel__hw_cache_name(struct evsel *evsel, char *bf, size_t size) |
0b668bc9 ACM |
573 | { |
574 | int ret = __perf_evsel__hw_cache_name(evsel->attr.config, bf, size); | |
575 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); | |
576 | } | |
577 | ||
32dcd021 | 578 | static int perf_evsel__raw_name(struct evsel *evsel, char *bf, size_t size) |
6eef3d9c ACM |
579 | { |
580 | int ret = scnprintf(bf, size, "raw 0x%" PRIx64, evsel->attr.config); | |
581 | return ret + perf_evsel__add_modifiers(evsel, bf + ret, size - ret); | |
582 | } | |
583 | ||
3371f389 AK |
584 | static int perf_evsel__tool_name(char *bf, size_t size) |
585 | { | |
586 | int ret = scnprintf(bf, size, "duration_time"); | |
587 | return ret; | |
588 | } | |
589 | ||
32dcd021 | 590 | const char *perf_evsel__name(struct evsel *evsel) |
a4460836 | 591 | { |
7289f83c | 592 | char bf[128]; |
a4460836 | 593 | |
fdbdd7e8 ACM |
594 | if (!evsel) |
595 | goto out_unknown; | |
596 | ||
7289f83c ACM |
597 | if (evsel->name) |
598 | return evsel->name; | |
c410431c ACM |
599 | |
600 | switch (evsel->attr.type) { | |
601 | case PERF_TYPE_RAW: | |
6eef3d9c | 602 | perf_evsel__raw_name(evsel, bf, sizeof(bf)); |
c410431c ACM |
603 | break; |
604 | ||
605 | case PERF_TYPE_HARDWARE: | |
7289f83c | 606 | perf_evsel__hw_name(evsel, bf, sizeof(bf)); |
c410431c | 607 | break; |
0b668bc9 ACM |
608 | |
609 | case PERF_TYPE_HW_CACHE: | |
7289f83c | 610 | perf_evsel__hw_cache_name(evsel, bf, sizeof(bf)); |
0b668bc9 ACM |
611 | break; |
612 | ||
335c2f5d | 613 | case PERF_TYPE_SOFTWARE: |
3371f389 AK |
614 | if (evsel->tool_event) |
615 | perf_evsel__tool_name(bf, sizeof(bf)); | |
616 | else | |
617 | perf_evsel__sw_name(evsel, bf, sizeof(bf)); | |
335c2f5d ACM |
618 | break; |
619 | ||
a4460836 | 620 | case PERF_TYPE_TRACEPOINT: |
7289f83c | 621 | scnprintf(bf, sizeof(bf), "%s", "unknown tracepoint"); |
a4460836 ACM |
622 | break; |
623 | ||
287e74aa JO |
624 | case PERF_TYPE_BREAKPOINT: |
625 | perf_evsel__bp_name(evsel, bf, sizeof(bf)); | |
626 | break; | |
627 | ||
c410431c | 628 | default: |
ca1b1457 RR |
629 | scnprintf(bf, sizeof(bf), "unknown attr type: %d", |
630 | evsel->attr.type); | |
a4460836 | 631 | break; |
c410431c ACM |
632 | } |
633 | ||
7289f83c ACM |
634 | evsel->name = strdup(bf); |
635 | ||
fdbdd7e8 ACM |
636 | if (evsel->name) |
637 | return evsel->name; | |
638 | out_unknown: | |
639 | return "unknown"; | |
c410431c ACM |
640 | } |
641 | ||
32dcd021 | 642 | const char *perf_evsel__group_name(struct evsel *evsel) |
717e263f NK |
643 | { |
644 | return evsel->group_name ?: "anon group"; | |
645 | } | |
646 | ||
8ef278bb JO |
647 | /* |
648 | * Returns the group details for the specified leader, | |
649 | * with following rules. | |
650 | * | |
651 | * For record -e '{cycles,instructions}' | |
652 | * 'anon group { cycles:u, instructions:u }' | |
653 | * | |
654 | * For record -e 'cycles,instructions' and report --group | |
655 | * 'cycles:u, instructions:u' | |
656 | */ | |
32dcd021 | 657 | int perf_evsel__group_desc(struct evsel *evsel, char *buf, size_t size) |
717e263f | 658 | { |
8ef278bb | 659 | int ret = 0; |
32dcd021 | 660 | struct evsel *pos; |
717e263f NK |
661 | const char *group_name = perf_evsel__group_name(evsel); |
662 | ||
8ef278bb JO |
663 | if (!evsel->forced_leader) |
664 | ret = scnprintf(buf, size, "%s { ", group_name); | |
717e263f | 665 | |
8ef278bb | 666 | ret += scnprintf(buf + ret, size - ret, "%s", |
717e263f NK |
667 | perf_evsel__name(evsel)); |
668 | ||
669 | for_each_group_member(pos, evsel) | |
670 | ret += scnprintf(buf + ret, size - ret, ", %s", | |
671 | perf_evsel__name(pos)); | |
672 | ||
8ef278bb JO |
673 | if (!evsel->forced_leader) |
674 | ret += scnprintf(buf + ret, size - ret, " }"); | |
717e263f NK |
675 | |
676 | return ret; | |
677 | } | |
678 | ||
32dcd021 | 679 | static void __perf_evsel__config_callchain(struct evsel *evsel, |
1688c2fd ACM |
680 | struct record_opts *opts, |
681 | struct callchain_param *param) | |
6bedfab6 JO |
682 | { |
683 | bool function = perf_evsel__is_function_event(evsel); | |
684 | struct perf_event_attr *attr = &evsel->attr; | |
685 | ||
686 | perf_evsel__set_sample_bit(evsel, CALLCHAIN); | |
687 | ||
792d48b4 ACM |
688 | attr->sample_max_stack = param->max_stack; |
689 | ||
53651b28 | 690 | if (opts->kernel_callchains) |
691 | attr->exclude_callchain_user = 1; | |
692 | if (opts->user_callchains) | |
693 | attr->exclude_callchain_kernel = 1; | |
c3a6a8c4 | 694 | if (param->record_mode == CALLCHAIN_LBR) { |
aad2b21c KL |
695 | if (!opts->branch_stack) { |
696 | if (attr->exclude_user) { | |
697 | pr_warning("LBR callstack option is only available " | |
698 | "to get user callchain information. " | |
699 | "Falling back to framepointers.\n"); | |
700 | } else { | |
701 | perf_evsel__set_sample_bit(evsel, BRANCH_STACK); | |
702 | attr->branch_sample_type = PERF_SAMPLE_BRANCH_USER | | |
bd0f8895 AK |
703 | PERF_SAMPLE_BRANCH_CALL_STACK | |
704 | PERF_SAMPLE_BRANCH_NO_CYCLES | | |
705 | PERF_SAMPLE_BRANCH_NO_FLAGS; | |
aad2b21c KL |
706 | } |
707 | } else | |
708 | pr_warning("Cannot use LBR callstack with branch stack. " | |
709 | "Falling back to framepointers.\n"); | |
710 | } | |
711 | ||
c3a6a8c4 | 712 | if (param->record_mode == CALLCHAIN_DWARF) { |
6bedfab6 JO |
713 | if (!function) { |
714 | perf_evsel__set_sample_bit(evsel, REGS_USER); | |
715 | perf_evsel__set_sample_bit(evsel, STACK_USER); | |
d194d8fc AB |
716 | if (opts->sample_user_regs && DWARF_MINIMAL_REGS != PERF_REGS_MASK) { |
717 | attr->sample_regs_user |= DWARF_MINIMAL_REGS; | |
718 | pr_warning("WARNING: The use of --call-graph=dwarf may require all the user registers, " | |
719 | "specifying a subset with --user-regs may render DWARF unwinding unreliable, " | |
720 | "so the minimal registers set (IP, SP) is explicitly forced.\n"); | |
721 | } else { | |
722 | attr->sample_regs_user |= PERF_REGS_MASK; | |
723 | } | |
c3a6a8c4 | 724 | attr->sample_stack_user = param->dump_size; |
6bedfab6 JO |
725 | attr->exclude_callchain_user = 1; |
726 | } else { | |
727 | pr_info("Cannot use DWARF unwind for function trace event," | |
728 | " falling back to framepointers.\n"); | |
729 | } | |
730 | } | |
731 | ||
732 | if (function) { | |
733 | pr_info("Disabling user space callchains for function trace event.\n"); | |
734 | attr->exclude_callchain_user = 1; | |
735 | } | |
736 | } | |
737 | ||
32dcd021 | 738 | void perf_evsel__config_callchain(struct evsel *evsel, |
1688c2fd ACM |
739 | struct record_opts *opts, |
740 | struct callchain_param *param) | |
741 | { | |
742 | if (param->enabled) | |
743 | return __perf_evsel__config_callchain(evsel, opts, param); | |
744 | } | |
745 | ||
d457c963 | 746 | static void |
32dcd021 | 747 | perf_evsel__reset_callgraph(struct evsel *evsel, |
d457c963 KL |
748 | struct callchain_param *param) |
749 | { | |
750 | struct perf_event_attr *attr = &evsel->attr; | |
751 | ||
752 | perf_evsel__reset_sample_bit(evsel, CALLCHAIN); | |
753 | if (param->record_mode == CALLCHAIN_LBR) { | |
754 | perf_evsel__reset_sample_bit(evsel, BRANCH_STACK); | |
755 | attr->branch_sample_type &= ~(PERF_SAMPLE_BRANCH_USER | | |
756 | PERF_SAMPLE_BRANCH_CALL_STACK); | |
757 | } | |
758 | if (param->record_mode == CALLCHAIN_DWARF) { | |
759 | perf_evsel__reset_sample_bit(evsel, REGS_USER); | |
760 | perf_evsel__reset_sample_bit(evsel, STACK_USER); | |
761 | } | |
762 | } | |
763 | ||
32dcd021 | 764 | static void apply_config_terms(struct evsel *evsel, |
0d3dcc0e | 765 | struct record_opts *opts, bool track) |
930a2e29 JO |
766 | { |
767 | struct perf_evsel_config_term *term; | |
32067712 KL |
768 | struct list_head *config_terms = &evsel->config_terms; |
769 | struct perf_event_attr *attr = &evsel->attr; | |
249d98e5 ACM |
770 | /* callgraph default */ |
771 | struct callchain_param param = { | |
772 | .record_mode = callchain_param.record_mode, | |
773 | }; | |
d457c963 | 774 | u32 dump_size = 0; |
792d48b4 ACM |
775 | int max_stack = 0; |
776 | const char *callgraph_buf = NULL; | |
d457c963 | 777 | |
930a2e29 JO |
778 | list_for_each_entry(term, config_terms, list) { |
779 | switch (term->type) { | |
ee4c7588 | 780 | case PERF_EVSEL__CONFIG_TERM_PERIOD: |
c2f1cead AK |
781 | if (!(term->weak && opts->user_interval != ULLONG_MAX)) { |
782 | attr->sample_period = term->val.period; | |
783 | attr->freq = 0; | |
49c0ae80 | 784 | perf_evsel__reset_sample_bit(evsel, PERIOD); |
c2f1cead | 785 | } |
32067712 | 786 | break; |
09af2a55 | 787 | case PERF_EVSEL__CONFIG_TERM_FREQ: |
c2f1cead AK |
788 | if (!(term->weak && opts->user_freq != UINT_MAX)) { |
789 | attr->sample_freq = term->val.freq; | |
790 | attr->freq = 1; | |
49c0ae80 | 791 | perf_evsel__set_sample_bit(evsel, PERIOD); |
c2f1cead | 792 | } |
09af2a55 | 793 | break; |
32067712 KL |
794 | case PERF_EVSEL__CONFIG_TERM_TIME: |
795 | if (term->val.time) | |
796 | perf_evsel__set_sample_bit(evsel, TIME); | |
797 | else | |
798 | perf_evsel__reset_sample_bit(evsel, TIME); | |
799 | break; | |
d457c963 KL |
800 | case PERF_EVSEL__CONFIG_TERM_CALLGRAPH: |
801 | callgraph_buf = term->val.callgraph; | |
802 | break; | |
ac12f676 AK |
803 | case PERF_EVSEL__CONFIG_TERM_BRANCH: |
804 | if (term->val.branch && strcmp(term->val.branch, "no")) { | |
805 | perf_evsel__set_sample_bit(evsel, BRANCH_STACK); | |
806 | parse_branch_str(term->val.branch, | |
807 | &attr->branch_sample_type); | |
808 | } else | |
809 | perf_evsel__reset_sample_bit(evsel, BRANCH_STACK); | |
810 | break; | |
d457c963 KL |
811 | case PERF_EVSEL__CONFIG_TERM_STACK_USER: |
812 | dump_size = term->val.stack_user; | |
813 | break; | |
792d48b4 ACM |
814 | case PERF_EVSEL__CONFIG_TERM_MAX_STACK: |
815 | max_stack = term->val.max_stack; | |
816 | break; | |
2fda5ada ACM |
817 | case PERF_EVSEL__CONFIG_TERM_MAX_EVENTS: |
818 | evsel->max_events = term->val.max_events; | |
819 | break; | |
374ce938 WN |
820 | case PERF_EVSEL__CONFIG_TERM_INHERIT: |
821 | /* | |
822 | * attr->inherit should has already been set by | |
823 | * perf_evsel__config. If user explicitly set | |
824 | * inherit using config terms, override global | |
825 | * opt->no_inherit setting. | |
826 | */ | |
827 | attr->inherit = term->val.inherit ? 1 : 0; | |
828 | break; | |
626a6b78 WN |
829 | case PERF_EVSEL__CONFIG_TERM_OVERWRITE: |
830 | attr->write_backward = term->val.overwrite ? 1 : 0; | |
831 | break; | |
d0565132 | 832 | case PERF_EVSEL__CONFIG_TERM_DRV_CFG: |
2178790b | 833 | break; |
064b4e82 JY |
834 | case PERF_EVSEL__CONFIG_TERM_PERCORE: |
835 | break; | |
930a2e29 JO |
836 | default: |
837 | break; | |
838 | } | |
839 | } | |
d457c963 KL |
840 | |
841 | /* User explicitly set per-event callgraph, clear the old setting and reset. */ | |
792d48b4 | 842 | if ((callgraph_buf != NULL) || (dump_size > 0) || max_stack) { |
0d3dcc0e ACM |
843 | bool sample_address = false; |
844 | ||
792d48b4 ACM |
845 | if (max_stack) { |
846 | param.max_stack = max_stack; | |
847 | if (callgraph_buf == NULL) | |
848 | callgraph_buf = "fp"; | |
849 | } | |
d457c963 KL |
850 | |
851 | /* parse callgraph parameters */ | |
852 | if (callgraph_buf != NULL) { | |
f9db0d0f KL |
853 | if (!strcmp(callgraph_buf, "no")) { |
854 | param.enabled = false; | |
855 | param.record_mode = CALLCHAIN_NONE; | |
856 | } else { | |
857 | param.enabled = true; | |
858 | if (parse_callchain_record(callgraph_buf, ¶m)) { | |
859 | pr_err("per-event callgraph setting for %s failed. " | |
860 | "Apply callgraph global setting for it\n", | |
861 | evsel->name); | |
862 | return; | |
863 | } | |
0d3dcc0e ACM |
864 | if (param.record_mode == CALLCHAIN_DWARF) |
865 | sample_address = true; | |
d457c963 KL |
866 | } |
867 | } | |
868 | if (dump_size > 0) { | |
869 | dump_size = round_up(dump_size, sizeof(u64)); | |
870 | param.dump_size = dump_size; | |
871 | } | |
872 | ||
873 | /* If global callgraph set, clear it */ | |
874 | if (callchain_param.enabled) | |
875 | perf_evsel__reset_callgraph(evsel, &callchain_param); | |
876 | ||
877 | /* set perf-event callgraph */ | |
0d3dcc0e ACM |
878 | if (param.enabled) { |
879 | if (sample_address) { | |
880 | perf_evsel__set_sample_bit(evsel, ADDR); | |
881 | perf_evsel__set_sample_bit(evsel, DATA_SRC); | |
882 | evsel->attr.mmap_data = track; | |
883 | } | |
01e0d50c | 884 | perf_evsel__config_callchain(evsel, opts, ¶m); |
0d3dcc0e | 885 | } |
d457c963 | 886 | } |
930a2e29 JO |
887 | } |
888 | ||
32dcd021 | 889 | static bool is_dummy_event(struct evsel *evsel) |
95035c5e KL |
890 | { |
891 | return (evsel->attr.type == PERF_TYPE_SOFTWARE) && | |
892 | (evsel->attr.config == PERF_COUNT_SW_DUMMY); | |
893 | } | |
894 | ||
774cb499 JO |
895 | /* |
896 | * The enable_on_exec/disabled value strategy: | |
897 | * | |
898 | * 1) For any type of traced program: | |
899 | * - all independent events and group leaders are disabled | |
900 | * - all group members are enabled | |
901 | * | |
902 | * Group members are ruled by group leaders. They need to | |
903 | * be enabled, because the group scheduling relies on that. | |
904 | * | |
905 | * 2) For traced programs executed by perf: | |
906 | * - all independent events and group leaders have | |
907 | * enable_on_exec set | |
908 | * - we don't specifically enable or disable any event during | |
909 | * the record command | |
910 | * | |
911 | * Independent events and group leaders are initially disabled | |
912 | * and get enabled by exec. Group members are ruled by group | |
913 | * leaders as stated in 1). | |
914 | * | |
915 | * 3) For traced programs attached by perf (pid/tid): | |
916 | * - we specifically enable or disable all events during | |
917 | * the record command | |
918 | * | |
919 | * When attaching events to already running traced we | |
920 | * enable/disable events specifically, as there's no | |
921 | * initial traced exec call. | |
922 | */ | |
32dcd021 | 923 | void perf_evsel__config(struct evsel *evsel, struct record_opts *opts, |
e68ae9cf | 924 | struct callchain_param *callchain) |
0f82ebc4 | 925 | { |
32dcd021 | 926 | struct evsel *leader = evsel->leader; |
0f82ebc4 | 927 | struct perf_event_attr *attr = &evsel->attr; |
60b0896c | 928 | int track = evsel->tracking; |
3aa5939d | 929 | bool per_cpu = opts->target.default_per_cpu && !opts->target.per_thread; |
0f82ebc4 | 930 | |
594ac61a | 931 | attr->sample_id_all = perf_missing_features.sample_id_all ? 0 : 1; |
0f82ebc4 | 932 | attr->inherit = !opts->no_inherit; |
626a6b78 | 933 | attr->write_backward = opts->overwrite ? 1 : 0; |
0f82ebc4 | 934 | |
7be5ebe8 ACM |
935 | perf_evsel__set_sample_bit(evsel, IP); |
936 | perf_evsel__set_sample_bit(evsel, TID); | |
0f82ebc4 | 937 | |
3c176311 JO |
938 | if (evsel->sample_read) { |
939 | perf_evsel__set_sample_bit(evsel, READ); | |
940 | ||
941 | /* | |
942 | * We need ID even in case of single event, because | |
943 | * PERF_SAMPLE_READ process ID specific data. | |
944 | */ | |
75562573 | 945 | perf_evsel__set_sample_id(evsel, false); |
3c176311 JO |
946 | |
947 | /* | |
948 | * Apply group format only if we belong to group | |
949 | * with more than one members. | |
950 | */ | |
951 | if (leader->nr_members > 1) { | |
952 | attr->read_format |= PERF_FORMAT_GROUP; | |
953 | attr->inherit = 0; | |
954 | } | |
955 | } | |
956 | ||
0f82ebc4 | 957 | /* |
17314e23 | 958 | * We default some events to have a default interval. But keep |
0f82ebc4 ACM |
959 | * it a weak assumption overridable by the user. |
960 | */ | |
17314e23 | 961 | if (!attr->sample_period || (opts->user_freq != UINT_MAX || |
0f82ebc4 ACM |
962 | opts->user_interval != ULLONG_MAX)) { |
963 | if (opts->freq) { | |
7be5ebe8 | 964 | perf_evsel__set_sample_bit(evsel, PERIOD); |
0f82ebc4 ACM |
965 | attr->freq = 1; |
966 | attr->sample_freq = opts->freq; | |
967 | } else { | |
968 | attr->sample_period = opts->default_interval; | |
969 | } | |
970 | } | |
971 | ||
3c176311 JO |
972 | /* |
973 | * Disable sampling for all group members other | |
974 | * than leader in case leader 'leads' the sampling. | |
975 | */ | |
976 | if ((leader != evsel) && leader->sample_read) { | |
e9add8ba JO |
977 | attr->freq = 0; |
978 | attr->sample_freq = 0; | |
979 | attr->sample_period = 0; | |
980 | attr->write_backward = 0; | |
6e7e8b9f JO |
981 | |
982 | /* | |
983 | * We don't get sample for slave events, we make them | |
984 | * when delivering group leader sample. Set the slave | |
985 | * event to follow the master sample_type to ease up | |
986 | * report. | |
987 | */ | |
988 | attr->sample_type = leader->attr.sample_type; | |
3c176311 JO |
989 | } |
990 | ||
0f82ebc4 ACM |
991 | if (opts->no_samples) |
992 | attr->sample_freq = 0; | |
993 | ||
a17f0697 JO |
994 | if (opts->inherit_stat) { |
995 | evsel->attr.read_format |= | |
996 | PERF_FORMAT_TOTAL_TIME_ENABLED | | |
997 | PERF_FORMAT_TOTAL_TIME_RUNNING | | |
998 | PERF_FORMAT_ID; | |
0f82ebc4 | 999 | attr->inherit_stat = 1; |
a17f0697 | 1000 | } |
0f82ebc4 ACM |
1001 | |
1002 | if (opts->sample_address) { | |
7be5ebe8 | 1003 | perf_evsel__set_sample_bit(evsel, ADDR); |
0f82ebc4 ACM |
1004 | attr->mmap_data = track; |
1005 | } | |
1006 | ||
f140373b JO |
1007 | /* |
1008 | * We don't allow user space callchains for function trace | |
1009 | * event, due to issues with page faults while tracing page | |
1010 | * fault handler and its overall trickiness nature. | |
1011 | */ | |
1012 | if (perf_evsel__is_function_event(evsel)) | |
1013 | evsel->attr.exclude_callchain_user = 1; | |
1014 | ||
e68ae9cf | 1015 | if (callchain && callchain->enabled && !evsel->no_aux_samples) |
01e0d50c | 1016 | perf_evsel__config_callchain(evsel, opts, callchain); |
26d33022 | 1017 | |
6a21c0b5 | 1018 | if (opts->sample_intr_regs) { |
bcc84ec6 | 1019 | attr->sample_regs_intr = opts->sample_intr_regs; |
6a21c0b5 SE |
1020 | perf_evsel__set_sample_bit(evsel, REGS_INTR); |
1021 | } | |
1022 | ||
84c41742 AK |
1023 | if (opts->sample_user_regs) { |
1024 | attr->sample_regs_user |= opts->sample_user_regs; | |
1025 | perf_evsel__set_sample_bit(evsel, REGS_USER); | |
1026 | } | |
1027 | ||
b6f35ed7 | 1028 | if (target__has_cpu(&opts->target) || opts->sample_cpu) |
7be5ebe8 | 1029 | perf_evsel__set_sample_bit(evsel, CPU); |
0f82ebc4 | 1030 | |
8affc2b8 | 1031 | /* |
bd1a0be5 | 1032 | * When the user explicitly disabled time don't force it here. |
8affc2b8 AK |
1033 | */ |
1034 | if (opts->sample_time && | |
1035 | (!perf_missing_features.sample_id_all && | |
3abebc55 AH |
1036 | (!opts->no_inherit || target__has_cpu(&opts->target) || per_cpu || |
1037 | opts->sample_time_set))) | |
7be5ebe8 | 1038 | perf_evsel__set_sample_bit(evsel, TIME); |
0f82ebc4 | 1039 | |
6ff1ce76 | 1040 | if (opts->raw_samples && !evsel->no_aux_samples) { |
7be5ebe8 ACM |
1041 | perf_evsel__set_sample_bit(evsel, TIME); |
1042 | perf_evsel__set_sample_bit(evsel, RAW); | |
1043 | perf_evsel__set_sample_bit(evsel, CPU); | |
0f82ebc4 ACM |
1044 | } |
1045 | ||
ccf49bfc | 1046 | if (opts->sample_address) |
1e7ed5ec | 1047 | perf_evsel__set_sample_bit(evsel, DATA_SRC); |
ccf49bfc | 1048 | |
3b0a5daa KL |
1049 | if (opts->sample_phys_addr) |
1050 | perf_evsel__set_sample_bit(evsel, PHYS_ADDR); | |
1051 | ||
509051ea | 1052 | if (opts->no_buffering) { |
0f82ebc4 ACM |
1053 | attr->watermark = 0; |
1054 | attr->wakeup_events = 1; | |
1055 | } | |
6ff1ce76 | 1056 | if (opts->branch_stack && !evsel->no_aux_samples) { |
7be5ebe8 | 1057 | perf_evsel__set_sample_bit(evsel, BRANCH_STACK); |
bdfebd84 RAV |
1058 | attr->branch_sample_type = opts->branch_stack; |
1059 | } | |
0f82ebc4 | 1060 | |
05484298 | 1061 | if (opts->sample_weight) |
1e7ed5ec | 1062 | perf_evsel__set_sample_bit(evsel, WEIGHT); |
05484298 | 1063 | |
62e503b7 | 1064 | attr->task = track; |
5c5e854b | 1065 | attr->mmap = track; |
a5a5ba72 | 1066 | attr->mmap2 = track && !perf_missing_features.mmap2; |
5c5e854b | 1067 | attr->comm = track; |
9aa0bfa3 | 1068 | attr->ksymbol = track && !perf_missing_features.ksymbol; |
71184c6a | 1069 | attr->bpf_event = track && !opts->no_bpf_event && |
45178a92 | 1070 | !perf_missing_features.bpf_event; |
0f82ebc4 | 1071 | |
f3b3614a HB |
1072 | if (opts->record_namespaces) |
1073 | attr->namespaces = track; | |
1074 | ||
b757bb09 AH |
1075 | if (opts->record_switch_events) |
1076 | attr->context_switch = track; | |
1077 | ||
475eeab9 | 1078 | if (opts->sample_transaction) |
1e7ed5ec | 1079 | perf_evsel__set_sample_bit(evsel, TRANSACTION); |
475eeab9 | 1080 | |
85c273d2 AK |
1081 | if (opts->running_time) { |
1082 | evsel->attr.read_format |= | |
1083 | PERF_FORMAT_TOTAL_TIME_ENABLED | | |
1084 | PERF_FORMAT_TOTAL_TIME_RUNNING; | |
1085 | } | |
1086 | ||
774cb499 JO |
1087 | /* |
1088 | * XXX see the function comment above | |
1089 | * | |
1090 | * Disabling only independent events or group leaders, | |
1091 | * keeping group members enabled. | |
1092 | */ | |
823254ed | 1093 | if (perf_evsel__is_group_leader(evsel)) |
774cb499 JO |
1094 | attr->disabled = 1; |
1095 | ||
1096 | /* | |
1097 | * Setting enable_on_exec for independent events and | |
1098 | * group leaders for traced executed by perf. | |
1099 | */ | |
6619a53e AK |
1100 | if (target__none(&opts->target) && perf_evsel__is_group_leader(evsel) && |
1101 | !opts->initial_delay) | |
0f82ebc4 | 1102 | attr->enable_on_exec = 1; |
2afd2bcf AH |
1103 | |
1104 | if (evsel->immediate) { | |
1105 | attr->disabled = 0; | |
1106 | attr->enable_on_exec = 0; | |
1107 | } | |
814c8c38 PZ |
1108 | |
1109 | clockid = opts->clockid; | |
1110 | if (opts->use_clockid) { | |
1111 | attr->use_clockid = 1; | |
1112 | attr->clockid = opts->clockid; | |
1113 | } | |
930a2e29 | 1114 | |
7f94af7a | 1115 | if (evsel->precise_max) |
4e8a5c15 | 1116 | attr->precise_ip = 3; |
7f94af7a | 1117 | |
85723885 JO |
1118 | if (opts->all_user) { |
1119 | attr->exclude_kernel = 1; | |
1120 | attr->exclude_user = 0; | |
1121 | } | |
1122 | ||
1123 | if (opts->all_kernel) { | |
1124 | attr->exclude_kernel = 0; | |
1125 | attr->exclude_user = 1; | |
1126 | } | |
1127 | ||
fb50c09e | 1128 | if (evsel->own_cpus || evsel->unit) |
4ab8455f JO |
1129 | evsel->attr.read_format |= PERF_FORMAT_ID; |
1130 | ||
930a2e29 JO |
1131 | /* |
1132 | * Apply event specific term settings, | |
1133 | * it overloads any global configuration. | |
1134 | */ | |
0d3dcc0e | 1135 | apply_config_terms(evsel, opts, track); |
a359c17a JO |
1136 | |
1137 | evsel->ignore_missing_thread = opts->ignore_missing_thread; | |
f290aa1f JO |
1138 | |
1139 | /* The --period option takes the precedence. */ | |
1140 | if (opts->period_set) { | |
1141 | if (opts->period) | |
1142 | perf_evsel__set_sample_bit(evsel, PERIOD); | |
1143 | else | |
1144 | perf_evsel__reset_sample_bit(evsel, PERIOD); | |
1145 | } | |
95035c5e KL |
1146 | |
1147 | /* | |
1148 | * For initial_delay, a dummy event is added implicitly. | |
1149 | * The software event will trigger -EOPNOTSUPP error out, | |
1150 | * if BRANCH_STACK bit is set. | |
1151 | */ | |
1152 | if (opts->initial_delay && is_dummy_event(evsel)) | |
1153 | perf_evsel__reset_sample_bit(evsel, BRANCH_STACK); | |
0f82ebc4 ACM |
1154 | } |
1155 | ||
32dcd021 | 1156 | static int perf_evsel__alloc_fd(struct evsel *evsel, int ncpus, int nthreads) |
69aad6f1 ACM |
1157 | { |
1158 | evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int)); | |
4af4c955 DA |
1159 | |
1160 | if (evsel->fd) { | |
18ef15c6 | 1161 | int cpu, thread; |
4af4c955 DA |
1162 | for (cpu = 0; cpu < ncpus; cpu++) { |
1163 | for (thread = 0; thread < nthreads; thread++) { | |
1164 | FD(evsel, cpu, thread) = -1; | |
1165 | } | |
1166 | } | |
1167 | } | |
1168 | ||
69aad6f1 ACM |
1169 | return evsel->fd != NULL ? 0 : -ENOMEM; |
1170 | } | |
1171 | ||
32dcd021 | 1172 | static int perf_evsel__run_ioctl(struct evsel *evsel, |
e2407bef | 1173 | int ioc, void *arg) |
745cefc5 ACM |
1174 | { |
1175 | int cpu, thread; | |
1176 | ||
475fb533 AK |
1177 | for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++) { |
1178 | for (thread = 0; thread < xyarray__max_y(evsel->fd); thread++) { | |
745cefc5 | 1179 | int fd = FD(evsel, cpu, thread), |
e2407bef | 1180 | err = ioctl(fd, ioc, arg); |
745cefc5 ACM |
1181 | |
1182 | if (err) | |
1183 | return err; | |
1184 | } | |
1185 | } | |
1186 | ||
1187 | return 0; | |
1188 | } | |
1189 | ||
24e376b2 | 1190 | int evsel__apply_filter(struct evsel *evsel, const char *filter) |
e2407bef | 1191 | { |
475fb533 | 1192 | return perf_evsel__run_ioctl(evsel, |
e2407bef AK |
1193 | PERF_EVENT_IOC_SET_FILTER, |
1194 | (void *)filter); | |
1195 | } | |
1196 | ||
32dcd021 | 1197 | int perf_evsel__set_filter(struct evsel *evsel, const char *filter) |
12467ae4 ACM |
1198 | { |
1199 | char *new_filter = strdup(filter); | |
1200 | ||
1201 | if (new_filter != NULL) { | |
1202 | free(evsel->filter); | |
1203 | evsel->filter = new_filter; | |
1204 | return 0; | |
1205 | } | |
1206 | ||
1207 | return -1; | |
1208 | } | |
1209 | ||
32dcd021 | 1210 | static int perf_evsel__append_filter(struct evsel *evsel, |
3541c034 | 1211 | const char *fmt, const char *filter) |
64ec84f5 ACM |
1212 | { |
1213 | char *new_filter; | |
1214 | ||
1215 | if (evsel->filter == NULL) | |
1216 | return perf_evsel__set_filter(evsel, filter); | |
1217 | ||
b15d0a4c | 1218 | if (asprintf(&new_filter, fmt, evsel->filter, filter) > 0) { |
64ec84f5 ACM |
1219 | free(evsel->filter); |
1220 | evsel->filter = new_filter; | |
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | return -1; | |
1225 | } | |
1226 | ||
32dcd021 | 1227 | int perf_evsel__append_tp_filter(struct evsel *evsel, const char *filter) |
3541c034 MP |
1228 | { |
1229 | return perf_evsel__append_filter(evsel, "(%s) && (%s)", filter); | |
1230 | } | |
1231 | ||
32dcd021 | 1232 | int perf_evsel__append_addr_filter(struct evsel *evsel, const char *filter) |
1e857484 MP |
1233 | { |
1234 | return perf_evsel__append_filter(evsel, "%s,%s", filter); | |
1235 | } | |
1236 | ||
ec7f24ef | 1237 | int evsel__enable(struct evsel *evsel) |
e2407bef | 1238 | { |
b7e8452b ACM |
1239 | int err = perf_evsel__run_ioctl(evsel, PERF_EVENT_IOC_ENABLE, 0); |
1240 | ||
1241 | if (!err) | |
1242 | evsel->disabled = false; | |
1243 | ||
1244 | return err; | |
e2407bef AK |
1245 | } |
1246 | ||
9a10bb22 | 1247 | int evsel__disable(struct evsel *evsel) |
e98a4cbb | 1248 | { |
b7e8452b ACM |
1249 | int err = perf_evsel__run_ioctl(evsel, PERF_EVENT_IOC_DISABLE, 0); |
1250 | /* | |
1251 | * We mark it disabled here so that tools that disable a event can | |
1252 | * ignore events after they disable it. I.e. the ring buffer may have | |
1253 | * already a few more events queued up before the kernel got the stop | |
1254 | * request. | |
1255 | */ | |
1256 | if (!err) | |
1257 | evsel->disabled = true; | |
1258 | ||
1259 | return err; | |
e98a4cbb JO |
1260 | } |
1261 | ||
32dcd021 | 1262 | int perf_evsel__alloc_id(struct evsel *evsel, int ncpus, int nthreads) |
70db7533 | 1263 | { |
8d9cbd8f VG |
1264 | if (ncpus == 0 || nthreads == 0) |
1265 | return 0; | |
1266 | ||
bf8e8f4b AH |
1267 | if (evsel->system_wide) |
1268 | nthreads = 1; | |
1269 | ||
a91e5431 ACM |
1270 | evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id)); |
1271 | if (evsel->sample_id == NULL) | |
1272 | return -ENOMEM; | |
1273 | ||
1274 | evsel->id = zalloc(ncpus * nthreads * sizeof(u64)); | |
1275 | if (evsel->id == NULL) { | |
1276 | xyarray__delete(evsel->sample_id); | |
1277 | evsel->sample_id = NULL; | |
1278 | return -ENOMEM; | |
1279 | } | |
1280 | ||
1281 | return 0; | |
70db7533 ACM |
1282 | } |
1283 | ||
32dcd021 | 1284 | static void perf_evsel__free_fd(struct evsel *evsel) |
69aad6f1 ACM |
1285 | { |
1286 | xyarray__delete(evsel->fd); | |
1287 | evsel->fd = NULL; | |
1288 | } | |
1289 | ||
32dcd021 | 1290 | static void perf_evsel__free_id(struct evsel *evsel) |
70db7533 | 1291 | { |
a91e5431 ACM |
1292 | xyarray__delete(evsel->sample_id); |
1293 | evsel->sample_id = NULL; | |
04662523 | 1294 | zfree(&evsel->id); |
08ef3af1 | 1295 | evsel->ids = 0; |
70db7533 ACM |
1296 | } |
1297 | ||
32dcd021 | 1298 | static void perf_evsel__free_config_terms(struct evsel *evsel) |
930a2e29 JO |
1299 | { |
1300 | struct perf_evsel_config_term *term, *h; | |
1301 | ||
1302 | list_for_each_entry_safe(term, h, &evsel->config_terms, list) { | |
e56fbc9d | 1303 | list_del_init(&term->list); |
930a2e29 JO |
1304 | free(term); |
1305 | } | |
1306 | } | |
1307 | ||
32dcd021 | 1308 | void perf_evsel__close_fd(struct evsel *evsel) |
c52b12ed ACM |
1309 | { |
1310 | int cpu, thread; | |
1311 | ||
475fb533 AK |
1312 | for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++) |
1313 | for (thread = 0; thread < xyarray__max_y(evsel->fd); ++thread) { | |
c52b12ed ACM |
1314 | close(FD(evsel, cpu, thread)); |
1315 | FD(evsel, cpu, thread) = -1; | |
1316 | } | |
1317 | } | |
1318 | ||
32dcd021 | 1319 | void perf_evsel__exit(struct evsel *evsel) |
69aad6f1 ACM |
1320 | { |
1321 | assert(list_empty(&evsel->node)); | |
d49e4695 | 1322 | assert(evsel->evlist == NULL); |
42dfa451 | 1323 | perf_evsel__free_counts(evsel); |
736b05a0 NK |
1324 | perf_evsel__free_fd(evsel); |
1325 | perf_evsel__free_id(evsel); | |
930a2e29 | 1326 | perf_evsel__free_config_terms(evsel); |
a53b6460 | 1327 | cgroup__put(evsel->cgrp); |
38f01d8d JO |
1328 | perf_cpu_map__put(evsel->cpus); |
1329 | perf_cpu_map__put(evsel->own_cpus); | |
578e91ec | 1330 | thread_map__put(evsel->threads); |
597e48c1 | 1331 | zfree(&evsel->group_name); |
597e48c1 | 1332 | zfree(&evsel->name); |
ce8ccff5 | 1333 | perf_evsel__object.fini(evsel); |
ef1d1af2 ACM |
1334 | } |
1335 | ||
5eb2dd2a | 1336 | void evsel__delete(struct evsel *evsel) |
ef1d1af2 ACM |
1337 | { |
1338 | perf_evsel__exit(evsel); | |
69aad6f1 ACM |
1339 | free(evsel); |
1340 | } | |
c52b12ed | 1341 | |
32dcd021 | 1342 | void perf_evsel__compute_deltas(struct evsel *evsel, int cpu, int thread, |
857a94a2 | 1343 | struct perf_counts_values *count) |
c7a79c47 SE |
1344 | { |
1345 | struct perf_counts_values tmp; | |
1346 | ||
1347 | if (!evsel->prev_raw_counts) | |
1348 | return; | |
1349 | ||
1350 | if (cpu == -1) { | |
1351 | tmp = evsel->prev_raw_counts->aggr; | |
1352 | evsel->prev_raw_counts->aggr = *count; | |
1353 | } else { | |
a6fa0038 JO |
1354 | tmp = *perf_counts(evsel->prev_raw_counts, cpu, thread); |
1355 | *perf_counts(evsel->prev_raw_counts, cpu, thread) = *count; | |
c7a79c47 SE |
1356 | } |
1357 | ||
1358 | count->val = count->val - tmp.val; | |
1359 | count->ena = count->ena - tmp.ena; | |
1360 | count->run = count->run - tmp.run; | |
1361 | } | |
1362 | ||
13112bbf JO |
1363 | void perf_counts_values__scale(struct perf_counts_values *count, |
1364 | bool scale, s8 *pscaled) | |
1365 | { | |
1366 | s8 scaled = 0; | |
1367 | ||
1368 | if (scale) { | |
1369 | if (count->run == 0) { | |
1370 | scaled = -1; | |
1371 | count->val = 0; | |
1372 | } else if (count->run < count->ena) { | |
1373 | scaled = 1; | |
42a5864c | 1374 | count->val = (u64)((double) count->val * count->ena / count->run); |
13112bbf | 1375 | } |
75998bb2 | 1376 | } |
13112bbf JO |
1377 | |
1378 | if (pscaled) | |
1379 | *pscaled = scaled; | |
1380 | } | |
1381 | ||
32dcd021 | 1382 | static int perf_evsel__read_size(struct evsel *evsel) |
de63403b JO |
1383 | { |
1384 | u64 read_format = evsel->attr.read_format; | |
1385 | int entry = sizeof(u64); /* value */ | |
1386 | int size = 0; | |
1387 | int nr = 1; | |
1388 | ||
1389 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) | |
1390 | size += sizeof(u64); | |
1391 | ||
1392 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) | |
1393 | size += sizeof(u64); | |
1394 | ||
1395 | if (read_format & PERF_FORMAT_ID) | |
1396 | entry += sizeof(u64); | |
1397 | ||
1398 | if (read_format & PERF_FORMAT_GROUP) { | |
1399 | nr = evsel->nr_members; | |
1400 | size += sizeof(u64); | |
1401 | } | |
1402 | ||
1403 | size += entry * nr; | |
1404 | return size; | |
1405 | } | |
1406 | ||
32dcd021 | 1407 | int perf_evsel__read(struct evsel *evsel, int cpu, int thread, |
f99f4719 JO |
1408 | struct perf_counts_values *count) |
1409 | { | |
de63403b JO |
1410 | size_t size = perf_evsel__read_size(evsel); |
1411 | ||
f99f4719 JO |
1412 | memset(count, 0, sizeof(*count)); |
1413 | ||
1414 | if (FD(evsel, cpu, thread) < 0) | |
1415 | return -EINVAL; | |
1416 | ||
de63403b | 1417 | if (readn(FD(evsel, cpu, thread), count->values, size) <= 0) |
f99f4719 JO |
1418 | return -errno; |
1419 | ||
1420 | return 0; | |
1421 | } | |
1422 | ||
f7794d52 | 1423 | static int |
32dcd021 | 1424 | perf_evsel__read_one(struct evsel *evsel, int cpu, int thread) |
f7794d52 JO |
1425 | { |
1426 | struct perf_counts_values *count = perf_counts(evsel->counts, cpu, thread); | |
1427 | ||
1428 | return perf_evsel__read(evsel, cpu, thread, count); | |
1429 | } | |
1430 | ||
1431 | static void | |
32dcd021 | 1432 | perf_evsel__set_count(struct evsel *counter, int cpu, int thread, |
f7794d52 JO |
1433 | u64 val, u64 ena, u64 run) |
1434 | { | |
1435 | struct perf_counts_values *count; | |
1436 | ||
1437 | count = perf_counts(counter->counts, cpu, thread); | |
1438 | ||
1439 | count->val = val; | |
1440 | count->ena = ena; | |
1441 | count->run = run; | |
df1d6856 JO |
1442 | |
1443 | perf_counts__set_loaded(counter->counts, cpu, thread, true); | |
f7794d52 JO |
1444 | } |
1445 | ||
1446 | static int | |
32dcd021 | 1447 | perf_evsel__process_group_data(struct evsel *leader, |
f7794d52 JO |
1448 | int cpu, int thread, u64 *data) |
1449 | { | |
1450 | u64 read_format = leader->attr.read_format; | |
1451 | struct sample_read_value *v; | |
1452 | u64 nr, ena = 0, run = 0, i; | |
1453 | ||
1454 | nr = *data++; | |
1455 | ||
1456 | if (nr != (u64) leader->nr_members) | |
1457 | return -EINVAL; | |
1458 | ||
1459 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) | |
1460 | ena = *data++; | |
1461 | ||
1462 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) | |
1463 | run = *data++; | |
1464 | ||
1465 | v = (struct sample_read_value *) data; | |
1466 | ||
1467 | perf_evsel__set_count(leader, cpu, thread, | |
1468 | v[0].value, ena, run); | |
1469 | ||
1470 | for (i = 1; i < nr; i++) { | |
32dcd021 | 1471 | struct evsel *counter; |
f7794d52 JO |
1472 | |
1473 | counter = perf_evlist__id2evsel(leader->evlist, v[i].id); | |
1474 | if (!counter) | |
1475 | return -EINVAL; | |
1476 | ||
1477 | perf_evsel__set_count(counter, cpu, thread, | |
1478 | v[i].value, ena, run); | |
1479 | } | |
1480 | ||
1481 | return 0; | |
1482 | } | |
1483 | ||
1484 | static int | |
32dcd021 | 1485 | perf_evsel__read_group(struct evsel *leader, int cpu, int thread) |
f7794d52 | 1486 | { |
82806c3a | 1487 | struct perf_stat_evsel *ps = leader->stats; |
f7794d52 JO |
1488 | u64 read_format = leader->attr.read_format; |
1489 | int size = perf_evsel__read_size(leader); | |
1490 | u64 *data = ps->group_data; | |
1491 | ||
1492 | if (!(read_format & PERF_FORMAT_ID)) | |
1493 | return -EINVAL; | |
1494 | ||
1495 | if (!perf_evsel__is_group_leader(leader)) | |
1496 | return -EINVAL; | |
1497 | ||
1498 | if (!data) { | |
1499 | data = zalloc(size); | |
1500 | if (!data) | |
1501 | return -ENOMEM; | |
1502 | ||
1503 | ps->group_data = data; | |
1504 | } | |
1505 | ||
1506 | if (FD(leader, cpu, thread) < 0) | |
1507 | return -EINVAL; | |
1508 | ||
1509 | if (readn(FD(leader, cpu, thread), data, size) <= 0) | |
1510 | return -errno; | |
1511 | ||
1512 | return perf_evsel__process_group_data(leader, cpu, thread, data); | |
1513 | } | |
1514 | ||
32dcd021 | 1515 | int perf_evsel__read_counter(struct evsel *evsel, int cpu, int thread) |
f7794d52 JO |
1516 | { |
1517 | u64 read_format = evsel->attr.read_format; | |
1518 | ||
1519 | if (read_format & PERF_FORMAT_GROUP) | |
1520 | return perf_evsel__read_group(evsel, cpu, thread); | |
1521 | else | |
1522 | return perf_evsel__read_one(evsel, cpu, thread); | |
1523 | } | |
1524 | ||
32dcd021 | 1525 | int __perf_evsel__read_on_cpu(struct evsel *evsel, |
c52b12ed ACM |
1526 | int cpu, int thread, bool scale) |
1527 | { | |
1528 | struct perf_counts_values count; | |
1529 | size_t nv = scale ? 3 : 1; | |
1530 | ||
1531 | if (FD(evsel, cpu, thread) < 0) | |
1532 | return -EINVAL; | |
1533 | ||
a6fa0038 | 1534 | if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1, thread + 1) < 0) |
4eed11d5 ACM |
1535 | return -ENOMEM; |
1536 | ||
db49a717 | 1537 | if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) <= 0) |
c52b12ed ACM |
1538 | return -errno; |
1539 | ||
a6fa0038 | 1540 | perf_evsel__compute_deltas(evsel, cpu, thread, &count); |
13112bbf | 1541 | perf_counts_values__scale(&count, scale, NULL); |
a6fa0038 | 1542 | *perf_counts(evsel->counts, cpu, thread) = count; |
c52b12ed ACM |
1543 | return 0; |
1544 | } | |
1545 | ||
32dcd021 | 1546 | static int get_group_fd(struct evsel *evsel, int cpu, int thread) |
6a4bb04c | 1547 | { |
32dcd021 | 1548 | struct evsel *leader = evsel->leader; |
6a4bb04c JO |
1549 | int fd; |
1550 | ||
823254ed | 1551 | if (perf_evsel__is_group_leader(evsel)) |
6a4bb04c JO |
1552 | return -1; |
1553 | ||
1554 | /* | |
1555 | * Leader must be already processed/open, | |
1556 | * if not it's a bug. | |
1557 | */ | |
1558 | BUG_ON(!leader->fd); | |
1559 | ||
1560 | fd = FD(leader, cpu, thread); | |
1561 | BUG_ON(fd == -1); | |
1562 | ||
1563 | return fd; | |
1564 | } | |
1565 | ||
2c5e8c52 PZ |
1566 | struct bit_names { |
1567 | int bit; | |
1568 | const char *name; | |
1569 | }; | |
1570 | ||
1571 | static void __p_bits(char *buf, size_t size, u64 value, struct bit_names *bits) | |
1572 | { | |
1573 | bool first_bit = true; | |
1574 | int i = 0; | |
1575 | ||
1576 | do { | |
1577 | if (value & bits[i].bit) { | |
1578 | buf += scnprintf(buf, size, "%s%s", first_bit ? "" : "|", bits[i].name); | |
1579 | first_bit = false; | |
1580 | } | |
1581 | } while (bits[++i].name != NULL); | |
1582 | } | |
1583 | ||
1584 | static void __p_sample_type(char *buf, size_t size, u64 value) | |
1585 | { | |
1586 | #define bit_name(n) { PERF_SAMPLE_##n, #n } | |
1587 | struct bit_names bits[] = { | |
1588 | bit_name(IP), bit_name(TID), bit_name(TIME), bit_name(ADDR), | |
1589 | bit_name(READ), bit_name(CALLCHAIN), bit_name(ID), bit_name(CPU), | |
1590 | bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW), | |
1591 | bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER), | |
84422592 | 1592 | bit_name(IDENTIFIER), bit_name(REGS_INTR), bit_name(DATA_SRC), |
3b0a5daa | 1593 | bit_name(WEIGHT), bit_name(PHYS_ADDR), |
2c5e8c52 PZ |
1594 | { .name = NULL, } |
1595 | }; | |
1596 | #undef bit_name | |
1597 | __p_bits(buf, size, value, bits); | |
1598 | } | |
1599 | ||
a213b92e ACM |
1600 | static void __p_branch_sample_type(char *buf, size_t size, u64 value) |
1601 | { | |
1602 | #define bit_name(n) { PERF_SAMPLE_BRANCH_##n, #n } | |
1603 | struct bit_names bits[] = { | |
1604 | bit_name(USER), bit_name(KERNEL), bit_name(HV), bit_name(ANY), | |
1605 | bit_name(ANY_CALL), bit_name(ANY_RETURN), bit_name(IND_CALL), | |
1606 | bit_name(ABORT_TX), bit_name(IN_TX), bit_name(NO_TX), | |
1607 | bit_name(COND), bit_name(CALL_STACK), bit_name(IND_JUMP), | |
1608 | bit_name(CALL), bit_name(NO_FLAGS), bit_name(NO_CYCLES), | |
1609 | { .name = NULL, } | |
1610 | }; | |
1611 | #undef bit_name | |
1612 | __p_bits(buf, size, value, bits); | |
1613 | } | |
1614 | ||
2c5e8c52 PZ |
1615 | static void __p_read_format(char *buf, size_t size, u64 value) |
1616 | { | |
1617 | #define bit_name(n) { PERF_FORMAT_##n, #n } | |
1618 | struct bit_names bits[] = { | |
1619 | bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING), | |
1620 | bit_name(ID), bit_name(GROUP), | |
1621 | { .name = NULL, } | |
1622 | }; | |
1623 | #undef bit_name | |
1624 | __p_bits(buf, size, value, bits); | |
1625 | } | |
1626 | ||
1627 | #define BUF_SIZE 1024 | |
1628 | ||
7310aed7 | 1629 | #define p_hex(val) snprintf(buf, BUF_SIZE, "%#"PRIx64, (uint64_t)(val)) |
2c5e8c52 PZ |
1630 | #define p_unsigned(val) snprintf(buf, BUF_SIZE, "%"PRIu64, (uint64_t)(val)) |
1631 | #define p_signed(val) snprintf(buf, BUF_SIZE, "%"PRId64, (int64_t)(val)) | |
1632 | #define p_sample_type(val) __p_sample_type(buf, BUF_SIZE, val) | |
a213b92e | 1633 | #define p_branch_sample_type(val) __p_branch_sample_type(buf, BUF_SIZE, val) |
2c5e8c52 PZ |
1634 | #define p_read_format(val) __p_read_format(buf, BUF_SIZE, val) |
1635 | ||
1636 | #define PRINT_ATTRn(_n, _f, _p) \ | |
1637 | do { \ | |
1638 | if (attr->_f) { \ | |
1639 | _p(attr->_f); \ | |
1640 | ret += attr__fprintf(fp, _n, buf, priv);\ | |
1641 | } \ | |
1642 | } while (0) | |
1643 | ||
1644 | #define PRINT_ATTRf(_f, _p) PRINT_ATTRn(#_f, _f, _p) | |
1645 | ||
1646 | int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr, | |
1647 | attr__fprintf_f attr__fprintf, void *priv) | |
1648 | { | |
1649 | char buf[BUF_SIZE]; | |
1650 | int ret = 0; | |
1651 | ||
1652 | PRINT_ATTRf(type, p_unsigned); | |
1653 | PRINT_ATTRf(size, p_unsigned); | |
1654 | PRINT_ATTRf(config, p_hex); | |
1655 | PRINT_ATTRn("{ sample_period, sample_freq }", sample_period, p_unsigned); | |
1656 | PRINT_ATTRf(sample_type, p_sample_type); | |
1657 | PRINT_ATTRf(read_format, p_read_format); | |
1658 | ||
1659 | PRINT_ATTRf(disabled, p_unsigned); | |
1660 | PRINT_ATTRf(inherit, p_unsigned); | |
1661 | PRINT_ATTRf(pinned, p_unsigned); | |
1662 | PRINT_ATTRf(exclusive, p_unsigned); | |
1663 | PRINT_ATTRf(exclude_user, p_unsigned); | |
1664 | PRINT_ATTRf(exclude_kernel, p_unsigned); | |
1665 | PRINT_ATTRf(exclude_hv, p_unsigned); | |
1666 | PRINT_ATTRf(exclude_idle, p_unsigned); | |
1667 | PRINT_ATTRf(mmap, p_unsigned); | |
1668 | PRINT_ATTRf(comm, p_unsigned); | |
1669 | PRINT_ATTRf(freq, p_unsigned); | |
1670 | PRINT_ATTRf(inherit_stat, p_unsigned); | |
1671 | PRINT_ATTRf(enable_on_exec, p_unsigned); | |
1672 | PRINT_ATTRf(task, p_unsigned); | |
1673 | PRINT_ATTRf(watermark, p_unsigned); | |
1674 | PRINT_ATTRf(precise_ip, p_unsigned); | |
1675 | PRINT_ATTRf(mmap_data, p_unsigned); | |
1676 | PRINT_ATTRf(sample_id_all, p_unsigned); | |
1677 | PRINT_ATTRf(exclude_host, p_unsigned); | |
1678 | PRINT_ATTRf(exclude_guest, p_unsigned); | |
1679 | PRINT_ATTRf(exclude_callchain_kernel, p_unsigned); | |
1680 | PRINT_ATTRf(exclude_callchain_user, p_unsigned); | |
1681 | PRINT_ATTRf(mmap2, p_unsigned); | |
1682 | PRINT_ATTRf(comm_exec, p_unsigned); | |
1683 | PRINT_ATTRf(use_clockid, p_unsigned); | |
0286039f | 1684 | PRINT_ATTRf(context_switch, p_unsigned); |
0a241ef4 | 1685 | PRINT_ATTRf(write_backward, p_unsigned); |
db9fc765 | 1686 | PRINT_ATTRf(namespaces, p_unsigned); |
9aa0bfa3 | 1687 | PRINT_ATTRf(ksymbol, p_unsigned); |
45178a92 | 1688 | PRINT_ATTRf(bpf_event, p_unsigned); |
2c5e8c52 PZ |
1689 | |
1690 | PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned); | |
1691 | PRINT_ATTRf(bp_type, p_unsigned); | |
1692 | PRINT_ATTRn("{ bp_addr, config1 }", bp_addr, p_hex); | |
1693 | PRINT_ATTRn("{ bp_len, config2 }", bp_len, p_hex); | |
a213b92e | 1694 | PRINT_ATTRf(branch_sample_type, p_branch_sample_type); |
2c5e8c52 PZ |
1695 | PRINT_ATTRf(sample_regs_user, p_hex); |
1696 | PRINT_ATTRf(sample_stack_user, p_unsigned); | |
1697 | PRINT_ATTRf(clockid, p_signed); | |
1698 | PRINT_ATTRf(sample_regs_intr, p_hex); | |
70d73de4 | 1699 | PRINT_ATTRf(aux_watermark, p_unsigned); |
792d48b4 | 1700 | PRINT_ATTRf(sample_max_stack, p_unsigned); |
e3e1a54f AH |
1701 | |
1702 | return ret; | |
1703 | } | |
1704 | ||
2c5e8c52 | 1705 | static int __open_attr__fprintf(FILE *fp, const char *name, const char *val, |
0353631a | 1706 | void *priv __maybe_unused) |
2c5e8c52 PZ |
1707 | { |
1708 | return fprintf(fp, " %-32s %s\n", name, val); | |
1709 | } | |
1710 | ||
32dcd021 | 1711 | static void perf_evsel__remove_fd(struct evsel *pos, |
ca800068 MZ |
1712 | int nr_cpus, int nr_threads, |
1713 | int thread_idx) | |
1714 | { | |
1715 | for (int cpu = 0; cpu < nr_cpus; cpu++) | |
1716 | for (int thread = thread_idx; thread < nr_threads - 1; thread++) | |
1717 | FD(pos, cpu, thread) = FD(pos, cpu, thread + 1); | |
1718 | } | |
1719 | ||
32dcd021 | 1720 | static int update_fds(struct evsel *evsel, |
ca800068 MZ |
1721 | int nr_cpus, int cpu_idx, |
1722 | int nr_threads, int thread_idx) | |
1723 | { | |
32dcd021 | 1724 | struct evsel *pos; |
ca800068 MZ |
1725 | |
1726 | if (cpu_idx >= nr_cpus || thread_idx >= nr_threads) | |
1727 | return -EINVAL; | |
1728 | ||
1729 | evlist__for_each_entry(evsel->evlist, pos) { | |
1730 | nr_cpus = pos != evsel ? nr_cpus : cpu_idx; | |
1731 | ||
1732 | perf_evsel__remove_fd(pos, nr_cpus, nr_threads, thread_idx); | |
1733 | ||
1734 | /* | |
1735 | * Since fds for next evsel has not been created, | |
1736 | * there is no need to iterate whole event list. | |
1737 | */ | |
1738 | if (pos == evsel) | |
1739 | break; | |
1740 | } | |
1741 | return 0; | |
1742 | } | |
1743 | ||
32dcd021 | 1744 | static bool ignore_missing_thread(struct evsel *evsel, |
ca800068 | 1745 | int nr_cpus, int cpu, |
9749b90e | 1746 | struct perf_thread_map *threads, |
a359c17a JO |
1747 | int thread, int err) |
1748 | { | |
ca800068 MZ |
1749 | pid_t ignore_pid = thread_map__pid(threads, thread); |
1750 | ||
a359c17a JO |
1751 | if (!evsel->ignore_missing_thread) |
1752 | return false; | |
1753 | ||
1754 | /* The system wide setup does not work with threads. */ | |
1755 | if (evsel->system_wide) | |
1756 | return false; | |
1757 | ||
1758 | /* The -ESRCH is perf event syscall errno for pid's not found. */ | |
1759 | if (err != -ESRCH) | |
1760 | return false; | |
1761 | ||
1762 | /* If there's only one thread, let it fail. */ | |
1763 | if (threads->nr == 1) | |
1764 | return false; | |
1765 | ||
ca800068 MZ |
1766 | /* |
1767 | * We should remove fd for missing_thread first | |
1768 | * because thread_map__remove() will decrease threads->nr. | |
1769 | */ | |
1770 | if (update_fds(evsel, nr_cpus, cpu, threads->nr, thread)) | |
1771 | return false; | |
1772 | ||
a359c17a JO |
1773 | if (thread_map__remove(threads, thread)) |
1774 | return false; | |
1775 | ||
1776 | pr_warning("WARNING: Ignored open failure for pid %d\n", | |
ca800068 | 1777 | ignore_pid); |
a359c17a JO |
1778 | return true; |
1779 | } | |
1780 | ||
4e8a5c15 JO |
1781 | static void display_attr(struct perf_event_attr *attr) |
1782 | { | |
1783 | if (verbose >= 2) { | |
1784 | fprintf(stderr, "%.60s\n", graph_dotted_line); | |
1785 | fprintf(stderr, "perf_event_attr:\n"); | |
1786 | perf_event_attr__fprintf(stderr, attr, __open_attr__fprintf, NULL); | |
1787 | fprintf(stderr, "%.60s\n", graph_dotted_line); | |
1788 | } | |
1789 | } | |
1790 | ||
32dcd021 | 1791 | static int perf_event_open(struct evsel *evsel, |
4e8a5c15 JO |
1792 | pid_t pid, int cpu, int group_fd, |
1793 | unsigned long flags) | |
1794 | { | |
1795 | int precise_ip = evsel->attr.precise_ip; | |
1796 | int fd; | |
1797 | ||
1798 | while (1) { | |
1799 | pr_debug2("sys_perf_event_open: pid %d cpu %d group_fd %d flags %#lx", | |
1800 | pid, cpu, group_fd, flags); | |
1801 | ||
1802 | fd = sys_perf_event_open(&evsel->attr, pid, cpu, group_fd, flags); | |
1803 | if (fd >= 0) | |
1804 | break; | |
1805 | ||
cd136189 JO |
1806 | /* Do not try less precise if not requested. */ |
1807 | if (!evsel->precise_max) | |
4e8a5c15 JO |
1808 | break; |
1809 | ||
1810 | /* | |
1811 | * We tried all the precise_ip values, and it's | |
1812 | * still failing, so leave it to standard fallback. | |
1813 | */ | |
1814 | if (!evsel->attr.precise_ip) { | |
1815 | evsel->attr.precise_ip = precise_ip; | |
1816 | break; | |
1817 | } | |
1818 | ||
1819 | pr_debug2("\nsys_perf_event_open failed, error %d\n", -ENOTSUP); | |
1820 | evsel->attr.precise_ip--; | |
1821 | pr_debug2("decreasing precise_ip by one (%d)\n", evsel->attr.precise_ip); | |
1822 | display_attr(&evsel->attr); | |
1823 | } | |
1824 | ||
1825 | return fd; | |
1826 | } | |
1827 | ||
5972d1e0 JO |
1828 | int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus, |
1829 | struct perf_thread_map *threads) | |
48290609 | 1830 | { |
bf8e8f4b | 1831 | int cpu, thread, nthreads; |
57480d2c | 1832 | unsigned long flags = PERF_FLAG_FD_CLOEXEC; |
727ab04e | 1833 | int pid = -1, err; |
bec19672 | 1834 | enum { NO_CHANGE, SET_TO_MAX, INCREASED_MAX } set_rlimit = NO_CHANGE; |
48290609 | 1835 | |
32a951b4 ACM |
1836 | if (perf_missing_features.write_backward && evsel->attr.write_backward) |
1837 | return -EINVAL; | |
1838 | ||
c24ae6d9 | 1839 | if (cpus == NULL) { |
f854839b | 1840 | static struct perf_cpu_map *empty_cpu_map; |
c24ae6d9 ACM |
1841 | |
1842 | if (empty_cpu_map == NULL) { | |
397721e0 | 1843 | empty_cpu_map = perf_cpu_map__dummy_new(); |
c24ae6d9 ACM |
1844 | if (empty_cpu_map == NULL) |
1845 | return -ENOMEM; | |
1846 | } | |
1847 | ||
1848 | cpus = empty_cpu_map; | |
1849 | } | |
1850 | ||
1851 | if (threads == NULL) { | |
9749b90e | 1852 | static struct perf_thread_map *empty_thread_map; |
c24ae6d9 ACM |
1853 | |
1854 | if (empty_thread_map == NULL) { | |
1855 | empty_thread_map = thread_map__new_by_tid(-1); | |
1856 | if (empty_thread_map == NULL) | |
1857 | return -ENOMEM; | |
1858 | } | |
1859 | ||
1860 | threads = empty_thread_map; | |
1861 | } | |
1862 | ||
bf8e8f4b AH |
1863 | if (evsel->system_wide) |
1864 | nthreads = 1; | |
1865 | else | |
1866 | nthreads = threads->nr; | |
1867 | ||
0252208e | 1868 | if (evsel->fd == NULL && |
bf8e8f4b | 1869 | perf_evsel__alloc_fd(evsel, cpus->nr, nthreads) < 0) |
727ab04e | 1870 | return -ENOMEM; |
4eed11d5 | 1871 | |
023695d9 | 1872 | if (evsel->cgrp) { |
57480d2c | 1873 | flags |= PERF_FLAG_PID_CGROUP; |
023695d9 SE |
1874 | pid = evsel->cgrp->fd; |
1875 | } | |
1876 | ||
594ac61a | 1877 | fallback_missing_features: |
814c8c38 PZ |
1878 | if (perf_missing_features.clockid_wrong) |
1879 | evsel->attr.clockid = CLOCK_MONOTONIC; /* should always work */ | |
1880 | if (perf_missing_features.clockid) { | |
1881 | evsel->attr.use_clockid = 0; | |
1882 | evsel->attr.clockid = 0; | |
1883 | } | |
57480d2c YD |
1884 | if (perf_missing_features.cloexec) |
1885 | flags &= ~(unsigned long)PERF_FLAG_FD_CLOEXEC; | |
5c5e854b SE |
1886 | if (perf_missing_features.mmap2) |
1887 | evsel->attr.mmap2 = 0; | |
594ac61a ACM |
1888 | if (perf_missing_features.exclude_guest) |
1889 | evsel->attr.exclude_guest = evsel->attr.exclude_host = 0; | |
bd0f8895 AK |
1890 | if (perf_missing_features.lbr_flags) |
1891 | evsel->attr.branch_sample_type &= ~(PERF_SAMPLE_BRANCH_NO_FLAGS | | |
1892 | PERF_SAMPLE_BRANCH_NO_CYCLES); | |
82bf311e JO |
1893 | if (perf_missing_features.group_read && evsel->attr.inherit) |
1894 | evsel->attr.read_format &= ~(PERF_FORMAT_GROUP|PERF_FORMAT_ID); | |
9aa0bfa3 SL |
1895 | if (perf_missing_features.ksymbol) |
1896 | evsel->attr.ksymbol = 0; | |
45178a92 SL |
1897 | if (perf_missing_features.bpf_event) |
1898 | evsel->attr.bpf_event = 0; | |
594ac61a ACM |
1899 | retry_sample_id: |
1900 | if (perf_missing_features.sample_id_all) | |
1901 | evsel->attr.sample_id_all = 0; | |
1902 | ||
4e8a5c15 | 1903 | display_attr(&evsel->attr); |
e3e1a54f | 1904 | |
86bd5e86 | 1905 | for (cpu = 0; cpu < cpus->nr; cpu++) { |
9d04f178 | 1906 | |
bf8e8f4b | 1907 | for (thread = 0; thread < nthreads; thread++) { |
83c2e4f3 | 1908 | int fd, group_fd; |
023695d9 | 1909 | |
bf8e8f4b | 1910 | if (!evsel->cgrp && !evsel->system_wide) |
e13798c7 | 1911 | pid = thread_map__pid(threads, thread); |
023695d9 | 1912 | |
6a4bb04c | 1913 | group_fd = get_group_fd(evsel, cpu, thread); |
bec19672 | 1914 | retry_open: |
10213e2f JO |
1915 | test_attr__ready(); |
1916 | ||
4e8a5c15 JO |
1917 | fd = perf_event_open(evsel, pid, cpus->map[cpu], |
1918 | group_fd, flags); | |
83c2e4f3 JO |
1919 | |
1920 | FD(evsel, cpu, thread) = fd; | |
1921 | ||
1922 | if (fd < 0) { | |
727ab04e | 1923 | err = -errno; |
a359c17a | 1924 | |
ca800068 | 1925 | if (ignore_missing_thread(evsel, cpus->nr, cpu, threads, thread, err)) { |
a359c17a JO |
1926 | /* |
1927 | * We just removed 1 thread, so take a step | |
1928 | * back on thread index and lower the upper | |
1929 | * nthreads limit. | |
1930 | */ | |
1931 | nthreads--; | |
1932 | thread--; | |
1933 | ||
1934 | /* ... and pretend like nothing have happened. */ | |
1935 | err = 0; | |
1936 | continue; | |
1937 | } | |
1938 | ||
7b4b82bc | 1939 | pr_debug2("\nsys_perf_event_open failed, error %d\n", |
f852fd62 | 1940 | err); |
594ac61a | 1941 | goto try_fallback; |
727ab04e | 1942 | } |
1f45b1d4 | 1943 | |
83c2e4f3 | 1944 | pr_debug2(" = %d\n", fd); |
7b4b82bc | 1945 | |
1f45b1d4 | 1946 | if (evsel->bpf_fd >= 0) { |
83c2e4f3 | 1947 | int evt_fd = fd; |
1f45b1d4 WN |
1948 | int bpf_fd = evsel->bpf_fd; |
1949 | ||
1950 | err = ioctl(evt_fd, | |
1951 | PERF_EVENT_IOC_SET_BPF, | |
1952 | bpf_fd); | |
1953 | if (err && errno != EEXIST) { | |
1954 | pr_err("failed to attach bpf fd %d: %s\n", | |
1955 | bpf_fd, strerror(errno)); | |
1956 | err = -EINVAL; | |
1957 | goto out_close; | |
1958 | } | |
1959 | } | |
1960 | ||
bec19672 | 1961 | set_rlimit = NO_CHANGE; |
814c8c38 PZ |
1962 | |
1963 | /* | |
1964 | * If we succeeded but had to kill clockid, fail and | |
1965 | * have perf_evsel__open_strerror() print us a nice | |
1966 | * error. | |
1967 | */ | |
1968 | if (perf_missing_features.clockid || | |
1969 | perf_missing_features.clockid_wrong) { | |
1970 | err = -EINVAL; | |
1971 | goto out_close; | |
1972 | } | |
0252208e | 1973 | } |
48290609 ACM |
1974 | } |
1975 | ||
1976 | return 0; | |
1977 | ||
594ac61a | 1978 | try_fallback: |
bec19672 AK |
1979 | /* |
1980 | * perf stat needs between 5 and 22 fds per CPU. When we run out | |
1981 | * of them try to increase the limits. | |
1982 | */ | |
1983 | if (err == -EMFILE && set_rlimit < INCREASED_MAX) { | |
1984 | struct rlimit l; | |
1985 | int old_errno = errno; | |
1986 | ||
1987 | if (getrlimit(RLIMIT_NOFILE, &l) == 0) { | |
1988 | if (set_rlimit == NO_CHANGE) | |
1989 | l.rlim_cur = l.rlim_max; | |
1990 | else { | |
1991 | l.rlim_cur = l.rlim_max + 1000; | |
1992 | l.rlim_max = l.rlim_cur; | |
1993 | } | |
1994 | if (setrlimit(RLIMIT_NOFILE, &l) == 0) { | |
1995 | set_rlimit++; | |
1996 | errno = old_errno; | |
1997 | goto retry_open; | |
1998 | } | |
1999 | } | |
2000 | errno = old_errno; | |
2001 | } | |
2002 | ||
594ac61a ACM |
2003 | if (err != -EINVAL || cpu > 0 || thread > 0) |
2004 | goto out_close; | |
2005 | ||
814c8c38 PZ |
2006 | /* |
2007 | * Must probe features in the order they were added to the | |
2008 | * perf_event_attr interface. | |
2009 | */ | |
45178a92 SL |
2010 | if (!perf_missing_features.bpf_event && evsel->attr.bpf_event) { |
2011 | perf_missing_features.bpf_event = true; | |
2012 | pr_debug2("switching off bpf_event\n"); | |
2013 | goto fallback_missing_features; | |
2014 | } else if (!perf_missing_features.ksymbol && evsel->attr.ksymbol) { | |
9aa0bfa3 SL |
2015 | perf_missing_features.ksymbol = true; |
2016 | pr_debug2("switching off ksymbol\n"); | |
2017 | goto fallback_missing_features; | |
2018 | } else if (!perf_missing_features.write_backward && evsel->attr.write_backward) { | |
7da36e94 | 2019 | perf_missing_features.write_backward = true; |
2b04e0f8 | 2020 | pr_debug2("switching off write_backward\n"); |
32a951b4 | 2021 | goto out_close; |
7da36e94 | 2022 | } else if (!perf_missing_features.clockid_wrong && evsel->attr.use_clockid) { |
814c8c38 | 2023 | perf_missing_features.clockid_wrong = true; |
2b04e0f8 | 2024 | pr_debug2("switching off clockid\n"); |
814c8c38 PZ |
2025 | goto fallback_missing_features; |
2026 | } else if (!perf_missing_features.clockid && evsel->attr.use_clockid) { | |
2027 | perf_missing_features.clockid = true; | |
2b04e0f8 | 2028 | pr_debug2("switching off use_clockid\n"); |
814c8c38 PZ |
2029 | goto fallback_missing_features; |
2030 | } else if (!perf_missing_features.cloexec && (flags & PERF_FLAG_FD_CLOEXEC)) { | |
57480d2c | 2031 | perf_missing_features.cloexec = true; |
2b04e0f8 | 2032 | pr_debug2("switching off cloexec flag\n"); |
57480d2c YD |
2033 | goto fallback_missing_features; |
2034 | } else if (!perf_missing_features.mmap2 && evsel->attr.mmap2) { | |
5c5e854b | 2035 | perf_missing_features.mmap2 = true; |
2b04e0f8 | 2036 | pr_debug2("switching off mmap2\n"); |
5c5e854b SE |
2037 | goto fallback_missing_features; |
2038 | } else if (!perf_missing_features.exclude_guest && | |
2039 | (evsel->attr.exclude_guest || evsel->attr.exclude_host)) { | |
594ac61a | 2040 | perf_missing_features.exclude_guest = true; |
2b04e0f8 | 2041 | pr_debug2("switching off exclude_guest, exclude_host\n"); |
594ac61a ACM |
2042 | goto fallback_missing_features; |
2043 | } else if (!perf_missing_features.sample_id_all) { | |
2044 | perf_missing_features.sample_id_all = true; | |
2b04e0f8 | 2045 | pr_debug2("switching off sample_id_all\n"); |
594ac61a | 2046 | goto retry_sample_id; |
bd0f8895 AK |
2047 | } else if (!perf_missing_features.lbr_flags && |
2048 | (evsel->attr.branch_sample_type & | |
2049 | (PERF_SAMPLE_BRANCH_NO_CYCLES | | |
2050 | PERF_SAMPLE_BRANCH_NO_FLAGS))) { | |
2051 | perf_missing_features.lbr_flags = true; | |
2b04e0f8 | 2052 | pr_debug2("switching off branch sample type no (cycles/flags)\n"); |
bd0f8895 | 2053 | goto fallback_missing_features; |
82bf311e JO |
2054 | } else if (!perf_missing_features.group_read && |
2055 | evsel->attr.inherit && | |
121f325f KL |
2056 | (evsel->attr.read_format & PERF_FORMAT_GROUP) && |
2057 | perf_evsel__is_group_leader(evsel)) { | |
82bf311e JO |
2058 | perf_missing_features.group_read = true; |
2059 | pr_debug2("switching off group read\n"); | |
2060 | goto fallback_missing_features; | |
594ac61a | 2061 | } |
48290609 | 2062 | out_close: |
ab6c79b8 JY |
2063 | if (err) |
2064 | threads->err_thread = thread; | |
2065 | ||
0252208e ACM |
2066 | do { |
2067 | while (--thread >= 0) { | |
2068 | close(FD(evsel, cpu, thread)); | |
2069 | FD(evsel, cpu, thread) = -1; | |
2070 | } | |
bf8e8f4b | 2071 | thread = nthreads; |
0252208e | 2072 | } while (--cpu >= 0); |
727ab04e ACM |
2073 | return err; |
2074 | } | |
2075 | ||
32dcd021 | 2076 | void perf_evsel__close(struct evsel *evsel) |
727ab04e ACM |
2077 | { |
2078 | if (evsel->fd == NULL) | |
2079 | return; | |
2080 | ||
475fb533 | 2081 | perf_evsel__close_fd(evsel); |
727ab04e | 2082 | perf_evsel__free_fd(evsel); |
08ef3af1 | 2083 | perf_evsel__free_id(evsel); |
48290609 ACM |
2084 | } |
2085 | ||
32dcd021 | 2086 | int perf_evsel__open_per_cpu(struct evsel *evsel, |
f854839b | 2087 | struct perf_cpu_map *cpus) |
48290609 | 2088 | { |
5972d1e0 | 2089 | return evsel__open(evsel, cpus, NULL); |
0252208e | 2090 | } |
48290609 | 2091 | |
32dcd021 | 2092 | int perf_evsel__open_per_thread(struct evsel *evsel, |
9749b90e | 2093 | struct perf_thread_map *threads) |
0252208e | 2094 | { |
5972d1e0 | 2095 | return evsel__open(evsel, NULL, threads); |
48290609 | 2096 | } |
70082dd9 | 2097 | |
32dcd021 | 2098 | static int perf_evsel__parse_id_sample(const struct evsel *evsel, |
0807d2d8 ACM |
2099 | const union perf_event *event, |
2100 | struct perf_sample *sample) | |
d0dd74e8 | 2101 | { |
0807d2d8 | 2102 | u64 type = evsel->attr.sample_type; |
d0dd74e8 | 2103 | const u64 *array = event->sample.array; |
0807d2d8 | 2104 | bool swapped = evsel->needs_swap; |
37073f9e | 2105 | union u64_swap u; |
d0dd74e8 ACM |
2106 | |
2107 | array += ((event->header.size - | |
2108 | sizeof(event->header)) / sizeof(u64)) - 1; | |
2109 | ||
75562573 AH |
2110 | if (type & PERF_SAMPLE_IDENTIFIER) { |
2111 | sample->id = *array; | |
2112 | array--; | |
2113 | } | |
2114 | ||
d0dd74e8 | 2115 | if (type & PERF_SAMPLE_CPU) { |
37073f9e JO |
2116 | u.val64 = *array; |
2117 | if (swapped) { | |
2118 | /* undo swap of u64, then swap on individual u32s */ | |
2119 | u.val64 = bswap_64(u.val64); | |
2120 | u.val32[0] = bswap_32(u.val32[0]); | |
2121 | } | |
2122 | ||
2123 | sample->cpu = u.val32[0]; | |
d0dd74e8 ACM |
2124 | array--; |
2125 | } | |
2126 | ||
2127 | if (type & PERF_SAMPLE_STREAM_ID) { | |
2128 | sample->stream_id = *array; | |
2129 | array--; | |
2130 | } | |
2131 | ||
2132 | if (type & PERF_SAMPLE_ID) { | |
2133 | sample->id = *array; | |
2134 | array--; | |
2135 | } | |
2136 | ||
2137 | if (type & PERF_SAMPLE_TIME) { | |
2138 | sample->time = *array; | |
2139 | array--; | |
2140 | } | |
2141 | ||
2142 | if (type & PERF_SAMPLE_TID) { | |
37073f9e JO |
2143 | u.val64 = *array; |
2144 | if (swapped) { | |
2145 | /* undo swap of u64, then swap on individual u32s */ | |
2146 | u.val64 = bswap_64(u.val64); | |
2147 | u.val32[0] = bswap_32(u.val32[0]); | |
2148 | u.val32[1] = bswap_32(u.val32[1]); | |
2149 | } | |
2150 | ||
2151 | sample->pid = u.val32[0]; | |
2152 | sample->tid = u.val32[1]; | |
dd44bc6b | 2153 | array--; |
d0dd74e8 ACM |
2154 | } |
2155 | ||
2156 | return 0; | |
2157 | } | |
2158 | ||
03b6ea9b AH |
2159 | static inline bool overflow(const void *endp, u16 max_size, const void *offset, |
2160 | u64 size) | |
98e1da90 | 2161 | { |
03b6ea9b AH |
2162 | return size > max_size || offset + size > endp; |
2163 | } | |
98e1da90 | 2164 | |
03b6ea9b AH |
2165 | #define OVERFLOW_CHECK(offset, size, max_size) \ |
2166 | do { \ | |
2167 | if (overflow(endp, (max_size), (offset), (size))) \ | |
2168 | return -EFAULT; \ | |
2169 | } while (0) | |
98e1da90 | 2170 | |
03b6ea9b AH |
2171 | #define OVERFLOW_CHECK_u64(offset) \ |
2172 | OVERFLOW_CHECK(offset, sizeof(u64), sizeof(u64)) | |
98e1da90 | 2173 | |
01468120 JO |
2174 | static int |
2175 | perf_event__check_size(union perf_event *event, unsigned int sample_size) | |
2176 | { | |
2177 | /* | |
2178 | * The evsel's sample_size is based on PERF_SAMPLE_MASK which includes | |
2179 | * up to PERF_SAMPLE_PERIOD. After that overflow() must be used to | |
2180 | * check the format does not go past the end of the event. | |
2181 | */ | |
2182 | if (sample_size + sizeof(event->header) > event->header.size) | |
2183 | return -EFAULT; | |
2184 | ||
2185 | return 0; | |
2186 | } | |
2187 | ||
32dcd021 | 2188 | int perf_evsel__parse_sample(struct evsel *evsel, union perf_event *event, |
0807d2d8 | 2189 | struct perf_sample *data) |
d0dd74e8 | 2190 | { |
a3f698fe | 2191 | u64 type = evsel->attr.sample_type; |
0807d2d8 | 2192 | bool swapped = evsel->needs_swap; |
d0dd74e8 | 2193 | const u64 *array; |
03b6ea9b AH |
2194 | u16 max_size = event->header.size; |
2195 | const void *endp = (void *)event + max_size; | |
2196 | u64 sz; | |
d0dd74e8 | 2197 | |
936be503 DA |
2198 | /* |
2199 | * used for cross-endian analysis. See git commit 65014ab3 | |
2200 | * for why this goofiness is needed. | |
2201 | */ | |
6a11f92e | 2202 | union u64_swap u; |
936be503 | 2203 | |
f3bda2c9 | 2204 | memset(data, 0, sizeof(*data)); |
d0dd74e8 ACM |
2205 | data->cpu = data->pid = data->tid = -1; |
2206 | data->stream_id = data->id = data->time = -1ULL; | |
bc529086 | 2207 | data->period = evsel->attr.sample_period; |
473398a2 | 2208 | data->cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; |
28a0b398 | 2209 | data->misc = event->header.misc; |
3ad31d8a JO |
2210 | data->id = -1ULL; |
2211 | data->data_src = PERF_MEM_DATA_SRC_NONE; | |
d0dd74e8 ACM |
2212 | |
2213 | if (event->header.type != PERF_RECORD_SAMPLE) { | |
a3f698fe | 2214 | if (!evsel->attr.sample_id_all) |
d0dd74e8 | 2215 | return 0; |
0807d2d8 | 2216 | return perf_evsel__parse_id_sample(evsel, event, data); |
d0dd74e8 ACM |
2217 | } |
2218 | ||
2219 | array = event->sample.array; | |
2220 | ||
01468120 | 2221 | if (perf_event__check_size(event, evsel->sample_size)) |
a2854124 FW |
2222 | return -EFAULT; |
2223 | ||
75562573 AH |
2224 | if (type & PERF_SAMPLE_IDENTIFIER) { |
2225 | data->id = *array; | |
2226 | array++; | |
2227 | } | |
2228 | ||
d0dd74e8 | 2229 | if (type & PERF_SAMPLE_IP) { |
ef89325f | 2230 | data->ip = *array; |
d0dd74e8 ACM |
2231 | array++; |
2232 | } | |
2233 | ||
2234 | if (type & PERF_SAMPLE_TID) { | |
936be503 DA |
2235 | u.val64 = *array; |
2236 | if (swapped) { | |
2237 | /* undo swap of u64, then swap on individual u32s */ | |
2238 | u.val64 = bswap_64(u.val64); | |
2239 | u.val32[0] = bswap_32(u.val32[0]); | |
2240 | u.val32[1] = bswap_32(u.val32[1]); | |
2241 | } | |
2242 | ||
2243 | data->pid = u.val32[0]; | |
2244 | data->tid = u.val32[1]; | |
d0dd74e8 ACM |
2245 | array++; |
2246 | } | |
2247 | ||
2248 | if (type & PERF_SAMPLE_TIME) { | |
2249 | data->time = *array; | |
2250 | array++; | |
2251 | } | |
2252 | ||
2253 | if (type & PERF_SAMPLE_ADDR) { | |
2254 | data->addr = *array; | |
2255 | array++; | |
2256 | } | |
2257 | ||
d0dd74e8 ACM |
2258 | if (type & PERF_SAMPLE_ID) { |
2259 | data->id = *array; | |
2260 | array++; | |
2261 | } | |
2262 | ||
2263 | if (type & PERF_SAMPLE_STREAM_ID) { | |
2264 | data->stream_id = *array; | |
2265 | array++; | |
2266 | } | |
2267 | ||
2268 | if (type & PERF_SAMPLE_CPU) { | |
936be503 DA |
2269 | |
2270 | u.val64 = *array; | |
2271 | if (swapped) { | |
2272 | /* undo swap of u64, then swap on individual u32s */ | |
2273 | u.val64 = bswap_64(u.val64); | |
2274 | u.val32[0] = bswap_32(u.val32[0]); | |
2275 | } | |
2276 | ||
2277 | data->cpu = u.val32[0]; | |
d0dd74e8 ACM |
2278 | array++; |
2279 | } | |
2280 | ||
2281 | if (type & PERF_SAMPLE_PERIOD) { | |
2282 | data->period = *array; | |
2283 | array++; | |
2284 | } | |
2285 | ||
2286 | if (type & PERF_SAMPLE_READ) { | |
9ede473c JO |
2287 | u64 read_format = evsel->attr.read_format; |
2288 | ||
03b6ea9b | 2289 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
2290 | if (read_format & PERF_FORMAT_GROUP) |
2291 | data->read.group.nr = *array; | |
2292 | else | |
2293 | data->read.one.value = *array; | |
2294 | ||
2295 | array++; | |
2296 | ||
2297 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) { | |
03b6ea9b | 2298 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
2299 | data->read.time_enabled = *array; |
2300 | array++; | |
2301 | } | |
2302 | ||
2303 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) { | |
03b6ea9b | 2304 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
2305 | data->read.time_running = *array; |
2306 | array++; | |
2307 | } | |
2308 | ||
2309 | /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ | |
2310 | if (read_format & PERF_FORMAT_GROUP) { | |
03b6ea9b AH |
2311 | const u64 max_group_nr = UINT64_MAX / |
2312 | sizeof(struct sample_read_value); | |
2313 | ||
2314 | if (data->read.group.nr > max_group_nr) | |
2315 | return -EFAULT; | |
2316 | sz = data->read.group.nr * | |
2317 | sizeof(struct sample_read_value); | |
2318 | OVERFLOW_CHECK(array, sz, max_size); | |
2319 | data->read.group.values = | |
2320 | (struct sample_read_value *)array; | |
2321 | array = (void *)array + sz; | |
9ede473c | 2322 | } else { |
03b6ea9b | 2323 | OVERFLOW_CHECK_u64(array); |
9ede473c JO |
2324 | data->read.one.id = *array; |
2325 | array++; | |
2326 | } | |
d0dd74e8 ACM |
2327 | } |
2328 | ||
27de9b2b | 2329 | if (evsel__has_callchain(evsel)) { |
03b6ea9b | 2330 | const u64 max_callchain_nr = UINT64_MAX / sizeof(u64); |
98e1da90 | 2331 | |
03b6ea9b AH |
2332 | OVERFLOW_CHECK_u64(array); |
2333 | data->callchain = (struct ip_callchain *)array++; | |
2334 | if (data->callchain->nr > max_callchain_nr) | |
98e1da90 | 2335 | return -EFAULT; |
03b6ea9b AH |
2336 | sz = data->callchain->nr * sizeof(u64); |
2337 | OVERFLOW_CHECK(array, sz, max_size); | |
2338 | array = (void *)array + sz; | |
d0dd74e8 ACM |
2339 | } |
2340 | ||
2341 | if (type & PERF_SAMPLE_RAW) { | |
03b6ea9b | 2342 | OVERFLOW_CHECK_u64(array); |
936be503 | 2343 | u.val64 = *array; |
f9d8adb3 JO |
2344 | |
2345 | /* | |
2346 | * Undo swap of u64, then swap on individual u32s, | |
2347 | * get the size of the raw area and undo all of the | |
2348 | * swap. The pevent interface handles endianity by | |
2349 | * itself. | |
2350 | */ | |
2351 | if (swapped) { | |
936be503 DA |
2352 | u.val64 = bswap_64(u.val64); |
2353 | u.val32[0] = bswap_32(u.val32[0]); | |
2354 | u.val32[1] = bswap_32(u.val32[1]); | |
2355 | } | |
936be503 | 2356 | data->raw_size = u.val32[0]; |
f9d8adb3 JO |
2357 | |
2358 | /* | |
2359 | * The raw data is aligned on 64bits including the | |
2360 | * u32 size, so it's safe to use mem_bswap_64. | |
2361 | */ | |
2362 | if (swapped) | |
2363 | mem_bswap_64((void *) array, data->raw_size); | |
2364 | ||
03b6ea9b | 2365 | array = (void *)array + sizeof(u32); |
98e1da90 | 2366 | |
03b6ea9b AH |
2367 | OVERFLOW_CHECK(array, data->raw_size, max_size); |
2368 | data->raw_data = (void *)array; | |
2369 | array = (void *)array + data->raw_size; | |
d0dd74e8 ACM |
2370 | } |
2371 | ||
b5387528 | 2372 | if (type & PERF_SAMPLE_BRANCH_STACK) { |
03b6ea9b AH |
2373 | const u64 max_branch_nr = UINT64_MAX / |
2374 | sizeof(struct branch_entry); | |
b5387528 | 2375 | |
03b6ea9b AH |
2376 | OVERFLOW_CHECK_u64(array); |
2377 | data->branch_stack = (struct branch_stack *)array++; | |
b5387528 | 2378 | |
03b6ea9b AH |
2379 | if (data->branch_stack->nr > max_branch_nr) |
2380 | return -EFAULT; | |
b5387528 | 2381 | sz = data->branch_stack->nr * sizeof(struct branch_entry); |
03b6ea9b AH |
2382 | OVERFLOW_CHECK(array, sz, max_size); |
2383 | array = (void *)array + sz; | |
b5387528 | 2384 | } |
0f6a3015 JO |
2385 | |
2386 | if (type & PERF_SAMPLE_REGS_USER) { | |
03b6ea9b | 2387 | OVERFLOW_CHECK_u64(array); |
5b95a4a3 AH |
2388 | data->user_regs.abi = *array; |
2389 | array++; | |
0f6a3015 | 2390 | |
5b95a4a3 | 2391 | if (data->user_regs.abi) { |
352ea45a | 2392 | u64 mask = evsel->attr.sample_regs_user; |
03b6ea9b | 2393 | |
3a5b64f0 | 2394 | sz = hweight64(mask) * sizeof(u64); |
03b6ea9b | 2395 | OVERFLOW_CHECK(array, sz, max_size); |
352ea45a | 2396 | data->user_regs.mask = mask; |
0f6a3015 | 2397 | data->user_regs.regs = (u64 *)array; |
03b6ea9b | 2398 | array = (void *)array + sz; |
0f6a3015 JO |
2399 | } |
2400 | } | |
2401 | ||
2402 | if (type & PERF_SAMPLE_STACK_USER) { | |
03b6ea9b AH |
2403 | OVERFLOW_CHECK_u64(array); |
2404 | sz = *array++; | |
0f6a3015 JO |
2405 | |
2406 | data->user_stack.offset = ((char *)(array - 1) | |
2407 | - (char *) event); | |
2408 | ||
03b6ea9b | 2409 | if (!sz) { |
0f6a3015 JO |
2410 | data->user_stack.size = 0; |
2411 | } else { | |
03b6ea9b | 2412 | OVERFLOW_CHECK(array, sz, max_size); |
0f6a3015 | 2413 | data->user_stack.data = (char *)array; |
03b6ea9b AH |
2414 | array = (void *)array + sz; |
2415 | OVERFLOW_CHECK_u64(array); | |
54bd2692 | 2416 | data->user_stack.size = *array++; |
a65cb4b9 JO |
2417 | if (WARN_ONCE(data->user_stack.size > sz, |
2418 | "user stack dump failure\n")) | |
2419 | return -EFAULT; | |
0f6a3015 JO |
2420 | } |
2421 | } | |
2422 | ||
05484298 | 2423 | if (type & PERF_SAMPLE_WEIGHT) { |
03b6ea9b | 2424 | OVERFLOW_CHECK_u64(array); |
05484298 AK |
2425 | data->weight = *array; |
2426 | array++; | |
2427 | } | |
2428 | ||
98a3b32c | 2429 | if (type & PERF_SAMPLE_DATA_SRC) { |
03b6ea9b | 2430 | OVERFLOW_CHECK_u64(array); |
98a3b32c SE |
2431 | data->data_src = *array; |
2432 | array++; | |
2433 | } | |
2434 | ||
475eeab9 | 2435 | if (type & PERF_SAMPLE_TRANSACTION) { |
87b95524 | 2436 | OVERFLOW_CHECK_u64(array); |
475eeab9 AK |
2437 | data->transaction = *array; |
2438 | array++; | |
2439 | } | |
2440 | ||
6a21c0b5 SE |
2441 | data->intr_regs.abi = PERF_SAMPLE_REGS_ABI_NONE; |
2442 | if (type & PERF_SAMPLE_REGS_INTR) { | |
2443 | OVERFLOW_CHECK_u64(array); | |
2444 | data->intr_regs.abi = *array; | |
2445 | array++; | |
2446 | ||
2447 | if (data->intr_regs.abi != PERF_SAMPLE_REGS_ABI_NONE) { | |
2448 | u64 mask = evsel->attr.sample_regs_intr; | |
2449 | ||
3a5b64f0 | 2450 | sz = hweight64(mask) * sizeof(u64); |
6a21c0b5 SE |
2451 | OVERFLOW_CHECK(array, sz, max_size); |
2452 | data->intr_regs.mask = mask; | |
2453 | data->intr_regs.regs = (u64 *)array; | |
2454 | array = (void *)array + sz; | |
2455 | } | |
2456 | } | |
2457 | ||
3b0a5daa KL |
2458 | data->phys_addr = 0; |
2459 | if (type & PERF_SAMPLE_PHYS_ADDR) { | |
2460 | data->phys_addr = *array; | |
2461 | array++; | |
2462 | } | |
2463 | ||
d0dd74e8 ACM |
2464 | return 0; |
2465 | } | |
74eec26f | 2466 | |
32dcd021 | 2467 | int perf_evsel__parse_sample_timestamp(struct evsel *evsel, |
01468120 JO |
2468 | union perf_event *event, |
2469 | u64 *timestamp) | |
2470 | { | |
2471 | u64 type = evsel->attr.sample_type; | |
2472 | const u64 *array; | |
2473 | ||
2474 | if (!(type & PERF_SAMPLE_TIME)) | |
2475 | return -1; | |
2476 | ||
2477 | if (event->header.type != PERF_RECORD_SAMPLE) { | |
2478 | struct perf_sample data = { | |
2479 | .time = -1ULL, | |
2480 | }; | |
2481 | ||
2482 | if (!evsel->attr.sample_id_all) | |
2483 | return -1; | |
2484 | if (perf_evsel__parse_id_sample(evsel, event, &data)) | |
2485 | return -1; | |
2486 | ||
2487 | *timestamp = data.time; | |
2488 | return 0; | |
2489 | } | |
2490 | ||
2491 | array = event->sample.array; | |
2492 | ||
2493 | if (perf_event__check_size(event, evsel->sample_size)) | |
2494 | return -EFAULT; | |
2495 | ||
2496 | if (type & PERF_SAMPLE_IDENTIFIER) | |
2497 | array++; | |
2498 | ||
2499 | if (type & PERF_SAMPLE_IP) | |
2500 | array++; | |
2501 | ||
2502 | if (type & PERF_SAMPLE_TID) | |
2503 | array++; | |
2504 | ||
2505 | if (type & PERF_SAMPLE_TIME) | |
2506 | *timestamp = *array; | |
2507 | ||
2508 | return 0; | |
2509 | } | |
2510 | ||
b1cf6f65 | 2511 | size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type, |
352ea45a | 2512 | u64 read_format) |
b1cf6f65 AH |
2513 | { |
2514 | size_t sz, result = sizeof(struct sample_event); | |
2515 | ||
2516 | if (type & PERF_SAMPLE_IDENTIFIER) | |
2517 | result += sizeof(u64); | |
2518 | ||
2519 | if (type & PERF_SAMPLE_IP) | |
2520 | result += sizeof(u64); | |
2521 | ||
2522 | if (type & PERF_SAMPLE_TID) | |
2523 | result += sizeof(u64); | |
2524 | ||
2525 | if (type & PERF_SAMPLE_TIME) | |
2526 | result += sizeof(u64); | |
2527 | ||
2528 | if (type & PERF_SAMPLE_ADDR) | |
2529 | result += sizeof(u64); | |
2530 | ||
2531 | if (type & PERF_SAMPLE_ID) | |
2532 | result += sizeof(u64); | |
2533 | ||
2534 | if (type & PERF_SAMPLE_STREAM_ID) | |
2535 | result += sizeof(u64); | |
2536 | ||
2537 | if (type & PERF_SAMPLE_CPU) | |
2538 | result += sizeof(u64); | |
2539 | ||
2540 | if (type & PERF_SAMPLE_PERIOD) | |
2541 | result += sizeof(u64); | |
2542 | ||
2543 | if (type & PERF_SAMPLE_READ) { | |
2544 | result += sizeof(u64); | |
2545 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) | |
2546 | result += sizeof(u64); | |
2547 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) | |
2548 | result += sizeof(u64); | |
2549 | /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ | |
2550 | if (read_format & PERF_FORMAT_GROUP) { | |
2551 | sz = sample->read.group.nr * | |
2552 | sizeof(struct sample_read_value); | |
2553 | result += sz; | |
2554 | } else { | |
2555 | result += sizeof(u64); | |
2556 | } | |
2557 | } | |
2558 | ||
2559 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
2560 | sz = (sample->callchain->nr + 1) * sizeof(u64); | |
2561 | result += sz; | |
2562 | } | |
2563 | ||
2564 | if (type & PERF_SAMPLE_RAW) { | |
2565 | result += sizeof(u32); | |
2566 | result += sample->raw_size; | |
2567 | } | |
2568 | ||
2569 | if (type & PERF_SAMPLE_BRANCH_STACK) { | |
2570 | sz = sample->branch_stack->nr * sizeof(struct branch_entry); | |
2571 | sz += sizeof(u64); | |
2572 | result += sz; | |
2573 | } | |
2574 | ||
2575 | if (type & PERF_SAMPLE_REGS_USER) { | |
2576 | if (sample->user_regs.abi) { | |
2577 | result += sizeof(u64); | |
3a5b64f0 | 2578 | sz = hweight64(sample->user_regs.mask) * sizeof(u64); |
b1cf6f65 AH |
2579 | result += sz; |
2580 | } else { | |
2581 | result += sizeof(u64); | |
2582 | } | |
2583 | } | |
2584 | ||
2585 | if (type & PERF_SAMPLE_STACK_USER) { | |
2586 | sz = sample->user_stack.size; | |
2587 | result += sizeof(u64); | |
2588 | if (sz) { | |
2589 | result += sz; | |
2590 | result += sizeof(u64); | |
2591 | } | |
2592 | } | |
2593 | ||
2594 | if (type & PERF_SAMPLE_WEIGHT) | |
2595 | result += sizeof(u64); | |
2596 | ||
2597 | if (type & PERF_SAMPLE_DATA_SRC) | |
2598 | result += sizeof(u64); | |
2599 | ||
42d88910 AH |
2600 | if (type & PERF_SAMPLE_TRANSACTION) |
2601 | result += sizeof(u64); | |
2602 | ||
6a21c0b5 SE |
2603 | if (type & PERF_SAMPLE_REGS_INTR) { |
2604 | if (sample->intr_regs.abi) { | |
2605 | result += sizeof(u64); | |
3a5b64f0 | 2606 | sz = hweight64(sample->intr_regs.mask) * sizeof(u64); |
6a21c0b5 SE |
2607 | result += sz; |
2608 | } else { | |
2609 | result += sizeof(u64); | |
2610 | } | |
2611 | } | |
2612 | ||
3b0a5daa KL |
2613 | if (type & PERF_SAMPLE_PHYS_ADDR) |
2614 | result += sizeof(u64); | |
2615 | ||
b1cf6f65 AH |
2616 | return result; |
2617 | } | |
2618 | ||
74eec26f | 2619 | int perf_event__synthesize_sample(union perf_event *event, u64 type, |
352ea45a | 2620 | u64 read_format, |
936f1f30 | 2621 | const struct perf_sample *sample) |
74eec26f AV |
2622 | { |
2623 | u64 *array; | |
d03f2170 | 2624 | size_t sz; |
74eec26f AV |
2625 | /* |
2626 | * used for cross-endian analysis. See git commit 65014ab3 | |
2627 | * for why this goofiness is needed. | |
2628 | */ | |
6a11f92e | 2629 | union u64_swap u; |
74eec26f AV |
2630 | |
2631 | array = event->sample.array; | |
2632 | ||
75562573 AH |
2633 | if (type & PERF_SAMPLE_IDENTIFIER) { |
2634 | *array = sample->id; | |
2635 | array++; | |
2636 | } | |
2637 | ||
74eec26f | 2638 | if (type & PERF_SAMPLE_IP) { |
ef89325f | 2639 | *array = sample->ip; |
74eec26f AV |
2640 | array++; |
2641 | } | |
2642 | ||
2643 | if (type & PERF_SAMPLE_TID) { | |
2644 | u.val32[0] = sample->pid; | |
2645 | u.val32[1] = sample->tid; | |
74eec26f AV |
2646 | *array = u.val64; |
2647 | array++; | |
2648 | } | |
2649 | ||
2650 | if (type & PERF_SAMPLE_TIME) { | |
2651 | *array = sample->time; | |
2652 | array++; | |
2653 | } | |
2654 | ||
2655 | if (type & PERF_SAMPLE_ADDR) { | |
2656 | *array = sample->addr; | |
2657 | array++; | |
2658 | } | |
2659 | ||
2660 | if (type & PERF_SAMPLE_ID) { | |
2661 | *array = sample->id; | |
2662 | array++; | |
2663 | } | |
2664 | ||
2665 | if (type & PERF_SAMPLE_STREAM_ID) { | |
2666 | *array = sample->stream_id; | |
2667 | array++; | |
2668 | } | |
2669 | ||
2670 | if (type & PERF_SAMPLE_CPU) { | |
2671 | u.val32[0] = sample->cpu; | |
59a87fda | 2672 | u.val32[1] = 0; |
74eec26f AV |
2673 | *array = u.val64; |
2674 | array++; | |
2675 | } | |
2676 | ||
2677 | if (type & PERF_SAMPLE_PERIOD) { | |
2678 | *array = sample->period; | |
2679 | array++; | |
2680 | } | |
2681 | ||
d03f2170 AH |
2682 | if (type & PERF_SAMPLE_READ) { |
2683 | if (read_format & PERF_FORMAT_GROUP) | |
2684 | *array = sample->read.group.nr; | |
2685 | else | |
2686 | *array = sample->read.one.value; | |
2687 | array++; | |
2688 | ||
2689 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) { | |
2690 | *array = sample->read.time_enabled; | |
2691 | array++; | |
2692 | } | |
2693 | ||
2694 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) { | |
2695 | *array = sample->read.time_running; | |
2696 | array++; | |
2697 | } | |
2698 | ||
2699 | /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */ | |
2700 | if (read_format & PERF_FORMAT_GROUP) { | |
2701 | sz = sample->read.group.nr * | |
2702 | sizeof(struct sample_read_value); | |
2703 | memcpy(array, sample->read.group.values, sz); | |
2704 | array = (void *)array + sz; | |
2705 | } else { | |
2706 | *array = sample->read.one.id; | |
2707 | array++; | |
2708 | } | |
2709 | } | |
2710 | ||
2711 | if (type & PERF_SAMPLE_CALLCHAIN) { | |
2712 | sz = (sample->callchain->nr + 1) * sizeof(u64); | |
2713 | memcpy(array, sample->callchain, sz); | |
2714 | array = (void *)array + sz; | |
2715 | } | |
2716 | ||
2717 | if (type & PERF_SAMPLE_RAW) { | |
2718 | u.val32[0] = sample->raw_size; | |
d03f2170 AH |
2719 | *array = u.val64; |
2720 | array = (void *)array + sizeof(u32); | |
2721 | ||
2722 | memcpy(array, sample->raw_data, sample->raw_size); | |
2723 | array = (void *)array + sample->raw_size; | |
2724 | } | |
2725 | ||
2726 | if (type & PERF_SAMPLE_BRANCH_STACK) { | |
2727 | sz = sample->branch_stack->nr * sizeof(struct branch_entry); | |
2728 | sz += sizeof(u64); | |
2729 | memcpy(array, sample->branch_stack, sz); | |
2730 | array = (void *)array + sz; | |
2731 | } | |
2732 | ||
2733 | if (type & PERF_SAMPLE_REGS_USER) { | |
2734 | if (sample->user_regs.abi) { | |
2735 | *array++ = sample->user_regs.abi; | |
3a5b64f0 | 2736 | sz = hweight64(sample->user_regs.mask) * sizeof(u64); |
d03f2170 AH |
2737 | memcpy(array, sample->user_regs.regs, sz); |
2738 | array = (void *)array + sz; | |
2739 | } else { | |
2740 | *array++ = 0; | |
2741 | } | |
2742 | } | |
2743 | ||
2744 | if (type & PERF_SAMPLE_STACK_USER) { | |
2745 | sz = sample->user_stack.size; | |
2746 | *array++ = sz; | |
2747 | if (sz) { | |
2748 | memcpy(array, sample->user_stack.data, sz); | |
2749 | array = (void *)array + sz; | |
2750 | *array++ = sz; | |
2751 | } | |
2752 | } | |
2753 | ||
2754 | if (type & PERF_SAMPLE_WEIGHT) { | |
2755 | *array = sample->weight; | |
2756 | array++; | |
2757 | } | |
2758 | ||
2759 | if (type & PERF_SAMPLE_DATA_SRC) { | |
2760 | *array = sample->data_src; | |
2761 | array++; | |
2762 | } | |
2763 | ||
42d88910 AH |
2764 | if (type & PERF_SAMPLE_TRANSACTION) { |
2765 | *array = sample->transaction; | |
2766 | array++; | |
2767 | } | |
2768 | ||
6a21c0b5 SE |
2769 | if (type & PERF_SAMPLE_REGS_INTR) { |
2770 | if (sample->intr_regs.abi) { | |
2771 | *array++ = sample->intr_regs.abi; | |
3a5b64f0 | 2772 | sz = hweight64(sample->intr_regs.mask) * sizeof(u64); |
6a21c0b5 SE |
2773 | memcpy(array, sample->intr_regs.regs, sz); |
2774 | array = (void *)array + sz; | |
2775 | } else { | |
2776 | *array++ = 0; | |
2777 | } | |
2778 | } | |
2779 | ||
3b0a5daa KL |
2780 | if (type & PERF_SAMPLE_PHYS_ADDR) { |
2781 | *array = sample->phys_addr; | |
2782 | array++; | |
2783 | } | |
2784 | ||
74eec26f AV |
2785 | return 0; |
2786 | } | |
5555ded4 | 2787 | |
32dcd021 | 2788 | struct tep_format_field *perf_evsel__field(struct evsel *evsel, const char *name) |
efd2b924 | 2789 | { |
af85cd19 | 2790 | return tep_find_field(evsel->tp_format, name); |
efd2b924 ACM |
2791 | } |
2792 | ||
32dcd021 | 2793 | void *perf_evsel__rawptr(struct evsel *evsel, struct perf_sample *sample, |
5555ded4 ACM |
2794 | const char *name) |
2795 | { | |
2c92f982 | 2796 | struct tep_format_field *field = perf_evsel__field(evsel, name); |
5555ded4 ACM |
2797 | int offset; |
2798 | ||
efd2b924 ACM |
2799 | if (!field) |
2800 | return NULL; | |
5555ded4 ACM |
2801 | |
2802 | offset = field->offset; | |
2803 | ||
bb39ccb2 | 2804 | if (field->flags & TEP_FIELD_IS_DYNAMIC) { |
5555ded4 ACM |
2805 | offset = *(int *)(sample->raw_data + field->offset); |
2806 | offset &= 0xffff; | |
2807 | } | |
2808 | ||
2809 | return sample->raw_data + offset; | |
2810 | } | |
2811 | ||
2c92f982 | 2812 | u64 format_field__intval(struct tep_format_field *field, struct perf_sample *sample, |
90525176 | 2813 | bool needs_swap) |
5555ded4 | 2814 | { |
e6b6f679 | 2815 | u64 value; |
90525176 | 2816 | void *ptr = sample->raw_data + field->offset; |
5555ded4 | 2817 | |
e6b6f679 ACM |
2818 | switch (field->size) { |
2819 | case 1: | |
2820 | return *(u8 *)ptr; | |
2821 | case 2: | |
2822 | value = *(u16 *)ptr; | |
2823 | break; | |
2824 | case 4: | |
2825 | value = *(u32 *)ptr; | |
2826 | break; | |
2827 | case 8: | |
e94eedab | 2828 | memcpy(&value, ptr, sizeof(u64)); |
e6b6f679 ACM |
2829 | break; |
2830 | default: | |
2831 | return 0; | |
2832 | } | |
2833 | ||
90525176 | 2834 | if (!needs_swap) |
e6b6f679 ACM |
2835 | return value; |
2836 | ||
2837 | switch (field->size) { | |
2838 | case 2: | |
2839 | return bswap_16(value); | |
2840 | case 4: | |
2841 | return bswap_32(value); | |
2842 | case 8: | |
2843 | return bswap_64(value); | |
2844 | default: | |
2845 | return 0; | |
2846 | } | |
2847 | ||
2848 | return 0; | |
5555ded4 | 2849 | } |
0698aedd | 2850 | |
32dcd021 | 2851 | u64 perf_evsel__intval(struct evsel *evsel, struct perf_sample *sample, |
90525176 ACM |
2852 | const char *name) |
2853 | { | |
2c92f982 | 2854 | struct tep_format_field *field = perf_evsel__field(evsel, name); |
90525176 ACM |
2855 | |
2856 | if (!field) | |
2857 | return 0; | |
2858 | ||
2859 | return field ? format_field__intval(field, sample, evsel->needs_swap) : 0; | |
2860 | } | |
2861 | ||
32dcd021 | 2862 | bool perf_evsel__fallback(struct evsel *evsel, int err, |
c0a54341 ACM |
2863 | char *msg, size_t msgsize) |
2864 | { | |
08094828 ACM |
2865 | int paranoid; |
2866 | ||
2b821cce | 2867 | if ((err == ENOENT || err == ENXIO || err == ENODEV) && |
c0a54341 ACM |
2868 | evsel->attr.type == PERF_TYPE_HARDWARE && |
2869 | evsel->attr.config == PERF_COUNT_HW_CPU_CYCLES) { | |
2870 | /* | |
2871 | * If it's cycles then fall back to hrtimer based | |
2872 | * cpu-clock-tick sw counter, which is always available even if | |
2873 | * no PMU support. | |
2874 | * | |
2875 | * PPC returns ENXIO until 2.6.37 (behavior changed with commit | |
2876 | * b0a873e). | |
2877 | */ | |
2878 | scnprintf(msg, msgsize, "%s", | |
2879 | "The cycles event is not supported, trying to fall back to cpu-clock-ticks"); | |
2880 | ||
2881 | evsel->attr.type = PERF_TYPE_SOFTWARE; | |
2882 | evsel->attr.config = PERF_COUNT_SW_CPU_CLOCK; | |
2883 | ||
04662523 | 2884 | zfree(&evsel->name); |
08094828 ACM |
2885 | return true; |
2886 | } else if (err == EACCES && !evsel->attr.exclude_kernel && | |
2887 | (paranoid = perf_event_paranoid()) > 1) { | |
2888 | const char *name = perf_evsel__name(evsel); | |
2889 | char *new_name; | |
129193bb | 2890 | const char *sep = ":"; |
08094828 | 2891 | |
129193bb JO |
2892 | /* Is there already the separator in the name. */ |
2893 | if (strchr(name, '/') || | |
2894 | strchr(name, ':')) | |
2895 | sep = ""; | |
2896 | ||
2897 | if (asprintf(&new_name, "%s%su", name, sep) < 0) | |
08094828 ACM |
2898 | return false; |
2899 | ||
2900 | if (evsel->name) | |
2901 | free(evsel->name); | |
2902 | evsel->name = new_name; | |
2903 | scnprintf(msg, msgsize, | |
2904 | "kernel.perf_event_paranoid=%d, trying to fall back to excluding kernel samples", paranoid); | |
2905 | evsel->attr.exclude_kernel = 1; | |
2906 | ||
c0a54341 ACM |
2907 | return true; |
2908 | } | |
2909 | ||
2910 | return false; | |
2911 | } | |
56e52e85 | 2912 | |
2157f6ee ACM |
2913 | static bool find_process(const char *name) |
2914 | { | |
2915 | size_t len = strlen(name); | |
2916 | DIR *dir; | |
2917 | struct dirent *d; | |
2918 | int ret = -1; | |
2919 | ||
2920 | dir = opendir(procfs__mountpoint()); | |
2921 | if (!dir) | |
2922 | return false; | |
2923 | ||
2924 | /* Walk through the directory. */ | |
2925 | while (ret && (d = readdir(dir)) != NULL) { | |
2926 | char path[PATH_MAX]; | |
2927 | char *data; | |
2928 | size_t size; | |
2929 | ||
2930 | if ((d->d_type != DT_DIR) || | |
2931 | !strcmp(".", d->d_name) || | |
2932 | !strcmp("..", d->d_name)) | |
2933 | continue; | |
2934 | ||
2935 | scnprintf(path, sizeof(path), "%s/%s/comm", | |
2936 | procfs__mountpoint(), d->d_name); | |
2937 | ||
2938 | if (filename__read_str(path, &data, &size)) | |
2939 | continue; | |
2940 | ||
2941 | ret = strncmp(name, data, len); | |
2942 | free(data); | |
2943 | } | |
2944 | ||
2945 | closedir(dir); | |
2946 | return ret ? false : true; | |
2947 | } | |
2948 | ||
32dcd021 | 2949 | int perf_evsel__open_strerror(struct evsel *evsel, struct target *target, |
56e52e85 ACM |
2950 | int err, char *msg, size_t size) |
2951 | { | |
6e81c74c | 2952 | char sbuf[STRERR_BUFSIZE]; |
32ccb130 | 2953 | int printed = 0; |
6e81c74c | 2954 | |
56e52e85 ACM |
2955 | switch (err) { |
2956 | case EPERM: | |
2957 | case EACCES: | |
32ccb130 JY |
2958 | if (err == EPERM) |
2959 | printed = scnprintf(msg, size, | |
2960 | "No permission to enable %s event.\n\n", | |
2961 | perf_evsel__name(evsel)); | |
2962 | ||
2963 | return scnprintf(msg + printed, size - printed, | |
3379e0c3 BH |
2964 | "You may not have permission to collect %sstats.\n\n" |
2965 | "Consider tweaking /proc/sys/kernel/perf_event_paranoid,\n" | |
2966 | "which controls use of the performance events system by\n" | |
2967 | "unprivileged users (without CAP_SYS_ADMIN).\n\n" | |
7d173913 | 2968 | "The current value is %d:\n\n" |
3379e0c3 | 2969 | " -1: Allow use of (almost) all events by all users\n" |
ac0bb6b7 KK |
2970 | " Ignore mlock limit after perf_event_mlock_kb without CAP_IPC_LOCK\n" |
2971 | ">= 0: Disallow ftrace function tracepoint by users without CAP_SYS_ADMIN\n" | |
2972 | " Disallow raw tracepoint access by users without CAP_SYS_ADMIN\n" | |
3379e0c3 | 2973 | ">= 1: Disallow CPU event access by users without CAP_SYS_ADMIN\n" |
d6195a6a ACM |
2974 | ">= 2: Disallow kernel profiling by users without CAP_SYS_ADMIN\n\n" |
2975 | "To make this setting permanent, edit /etc/sysctl.conf too, e.g.:\n\n" | |
2976 | " kernel.perf_event_paranoid = -1\n" , | |
7d173913 ACM |
2977 | target->system_wide ? "system-wide " : "", |
2978 | perf_event_paranoid()); | |
56e52e85 ACM |
2979 | case ENOENT: |
2980 | return scnprintf(msg, size, "The %s event is not supported.", | |
2981 | perf_evsel__name(evsel)); | |
2982 | case EMFILE: | |
2983 | return scnprintf(msg, size, "%s", | |
2984 | "Too many events are opened.\n" | |
18ffdfe8 JO |
2985 | "Probably the maximum number of open file descriptors has been reached.\n" |
2986 | "Hint: Try again after reducing the number of events.\n" | |
2987 | "Hint: Try increasing the limit with 'ulimit -n <limit>'"); | |
de46d526 | 2988 | case ENOMEM: |
27de9b2b | 2989 | if (evsel__has_callchain(evsel) && |
de46d526 ACM |
2990 | access("/proc/sys/kernel/perf_event_max_stack", F_OK) == 0) |
2991 | return scnprintf(msg, size, | |
2992 | "Not enough memory to setup event with callchain.\n" | |
2993 | "Hint: Try tweaking /proc/sys/kernel/perf_event_max_stack\n" | |
029c75e5 | 2994 | "Hint: Current value: %d", sysctl__max_stack()); |
de46d526 | 2995 | break; |
56e52e85 ACM |
2996 | case ENODEV: |
2997 | if (target->cpu_list) | |
2998 | return scnprintf(msg, size, "%s", | |
81d64f46 | 2999 | "No such device - did you specify an out-of-range profile CPU?"); |
56e52e85 ACM |
3000 | break; |
3001 | case EOPNOTSUPP: | |
dc89e75a | 3002 | if (evsel->attr.sample_period != 0) |
114bc191 KP |
3003 | return scnprintf(msg, size, |
3004 | "%s: PMU Hardware doesn't support sampling/overflow-interrupts. Try 'perf stat'", | |
3005 | perf_evsel__name(evsel)); | |
56e52e85 ACM |
3006 | if (evsel->attr.precise_ip) |
3007 | return scnprintf(msg, size, "%s", | |
3008 | "\'precise\' request may not be supported. Try removing 'p' modifier."); | |
3009 | #if defined(__i386__) || defined(__x86_64__) | |
3010 | if (evsel->attr.type == PERF_TYPE_HARDWARE) | |
3011 | return scnprintf(msg, size, "%s", | |
ccbb6afe | 3012 | "No hardware sampling interrupt available.\n"); |
56e52e85 ACM |
3013 | #endif |
3014 | break; | |
63914aca JO |
3015 | case EBUSY: |
3016 | if (find_process("oprofiled")) | |
3017 | return scnprintf(msg, size, | |
3018 | "The PMU counters are busy/taken by another profiler.\n" | |
3019 | "We found oprofile daemon running, please stop it and try again."); | |
3020 | break; | |
814c8c38 | 3021 | case EINVAL: |
32a951b4 | 3022 | if (evsel->attr.write_backward && perf_missing_features.write_backward) |
7da36e94 | 3023 | return scnprintf(msg, size, "Reading from overwrite event is not supported by this kernel."); |
814c8c38 PZ |
3024 | if (perf_missing_features.clockid) |
3025 | return scnprintf(msg, size, "clockid feature not supported."); | |
3026 | if (perf_missing_features.clockid_wrong) | |
3027 | return scnprintf(msg, size, "wrong clockid (%d).", clockid); | |
3028 | break; | |
56e52e85 ACM |
3029 | default: |
3030 | break; | |
3031 | } | |
3032 | ||
3033 | return scnprintf(msg, size, | |
6e81c74c | 3034 | "The sys_perf_event_open() syscall returned with %d (%s) for event (%s).\n" |
ec394845 | 3035 | "/bin/dmesg | grep -i perf may provide additional information.\n", |
c8b5f2c9 | 3036 | err, str_error_r(err, sbuf, sizeof(sbuf)), |
6e81c74c | 3037 | perf_evsel__name(evsel)); |
56e52e85 | 3038 | } |
f4e47f9f | 3039 | |
32dcd021 | 3040 | struct perf_env *perf_evsel__env(struct evsel *evsel) |
69fb09f6 | 3041 | { |
5449f13c ACM |
3042 | if (evsel && evsel->evlist) |
3043 | return evsel->evlist->env; | |
69fb09f6 JY |
3044 | return NULL; |
3045 | } | |
650d6220 | 3046 | |
63503dba | 3047 | static int store_evsel_ids(struct evsel *evsel, struct evlist *evlist) |
650d6220 JO |
3048 | { |
3049 | int cpu, thread; | |
3050 | ||
3051 | for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++) { | |
3052 | for (thread = 0; thread < xyarray__max_y(evsel->fd); | |
3053 | thread++) { | |
3054 | int fd = FD(evsel, cpu, thread); | |
3055 | ||
3056 | if (perf_evlist__id_add_fd(evlist, evsel, | |
3057 | cpu, thread, fd) < 0) | |
3058 | return -1; | |
3059 | } | |
3060 | } | |
3061 | ||
3062 | return 0; | |
3063 | } | |
3064 | ||
63503dba | 3065 | int perf_evsel__store_ids(struct evsel *evsel, struct evlist *evlist) |
650d6220 | 3066 | { |
f854839b | 3067 | struct perf_cpu_map *cpus = evsel->cpus; |
9749b90e | 3068 | struct perf_thread_map *threads = evsel->threads; |
650d6220 JO |
3069 | |
3070 | if (perf_evsel__alloc_id(evsel, cpus->nr, threads->nr)) | |
3071 | return -ENOMEM; | |
3072 | ||
3073 | return store_evsel_ids(evsel, evlist); | |
3074 | } |