Commit | Line | Data |
---|---|---|
b8f46c5a XG |
1 | #define _FILE_OFFSET_BITS 64 |
2 | ||
94c744b6 ACM |
3 | #include <linux/kernel.h> |
4 | ||
ba21594c | 5 | #include <byteswap.h> |
94c744b6 ACM |
6 | #include <unistd.h> |
7 | #include <sys/types.h> | |
a41794cd | 8 | #include <sys/mman.h> |
94c744b6 | 9 | |
e248de33 ACM |
10 | #include "evlist.h" |
11 | #include "evsel.h" | |
94c744b6 | 12 | #include "session.h" |
45694aa7 | 13 | #include "tool.h" |
a328626b | 14 | #include "sort.h" |
94c744b6 | 15 | #include "util.h" |
5d67be97 | 16 | #include "cpumap.h" |
94c744b6 ACM |
17 | |
18 | static int perf_session__open(struct perf_session *self, bool force) | |
19 | { | |
20 | struct stat input_stat; | |
21 | ||
8dc58101 TZ |
22 | if (!strcmp(self->filename, "-")) { |
23 | self->fd_pipe = true; | |
24 | self->fd = STDIN_FILENO; | |
25 | ||
a91e5431 | 26 | if (perf_session__read_header(self, self->fd) < 0) |
8dc58101 TZ |
27 | pr_err("incompatible file format"); |
28 | ||
29 | return 0; | |
30 | } | |
31 | ||
f887f301 | 32 | self->fd = open(self->filename, O_RDONLY); |
94c744b6 | 33 | if (self->fd < 0) { |
0f2c3de2 AI |
34 | int err = errno; |
35 | ||
36 | pr_err("failed to open %s: %s", self->filename, strerror(err)); | |
37 | if (err == ENOENT && !strcmp(self->filename, "perf.data")) | |
94c744b6 ACM |
38 | pr_err(" (try 'perf record' first)"); |
39 | pr_err("\n"); | |
40 | return -errno; | |
41 | } | |
42 | ||
43 | if (fstat(self->fd, &input_stat) < 0) | |
44 | goto out_close; | |
45 | ||
46 | if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) { | |
47 | pr_err("file %s not owned by current user or root\n", | |
48 | self->filename); | |
49 | goto out_close; | |
50 | } | |
51 | ||
52 | if (!input_stat.st_size) { | |
53 | pr_info("zero-sized file (%s), nothing to do!\n", | |
54 | self->filename); | |
55 | goto out_close; | |
56 | } | |
57 | ||
a91e5431 | 58 | if (perf_session__read_header(self, self->fd) < 0) { |
94c744b6 ACM |
59 | pr_err("incompatible file format"); |
60 | goto out_close; | |
61 | } | |
62 | ||
c2a70653 ACM |
63 | if (!perf_evlist__valid_sample_type(self->evlist)) { |
64 | pr_err("non matching sample_type"); | |
65 | goto out_close; | |
66 | } | |
67 | ||
68 | if (!perf_evlist__valid_sample_id_all(self->evlist)) { | |
69 | pr_err("non matching sample_id_all"); | |
70 | goto out_close; | |
71 | } | |
72 | ||
94c744b6 ACM |
73 | self->size = input_stat.st_size; |
74 | return 0; | |
75 | ||
76 | out_close: | |
77 | close(self->fd); | |
78 | self->fd = -1; | |
79 | return -1; | |
80 | } | |
81 | ||
9c90a61c ACM |
82 | void perf_session__update_sample_type(struct perf_session *self) |
83 | { | |
a91e5431 | 84 | self->sample_type = perf_evlist__sample_type(self->evlist); |
c2a70653 | 85 | self->sample_size = __perf_evsel__sample_size(self->sample_type); |
a91e5431 | 86 | self->sample_id_all = perf_evlist__sample_id_all(self->evlist); |
81e36bff | 87 | self->id_hdr_size = perf_evlist__id_hdr_size(self->evlist); |
743eb868 | 88 | self->host_machine.id_hdr_size = self->id_hdr_size; |
9c90a61c ACM |
89 | } |
90 | ||
a1645ce1 ZY |
91 | int perf_session__create_kernel_maps(struct perf_session *self) |
92 | { | |
d118f8ba | 93 | int ret = machine__create_kernel_maps(&self->host_machine); |
a1645ce1 | 94 | |
a1645ce1 | 95 | if (ret >= 0) |
d118f8ba | 96 | ret = machines__create_guest_kernel_maps(&self->machines); |
a1645ce1 ZY |
97 | return ret; |
98 | } | |
99 | ||
076c6e45 ACM |
100 | static void perf_session__destroy_kernel_maps(struct perf_session *self) |
101 | { | |
102 | machine__destroy_kernel_maps(&self->host_machine); | |
103 | machines__destroy_guest_kernel_maps(&self->machines); | |
104 | } | |
105 | ||
21ef97f0 IM |
106 | struct perf_session *perf_session__new(const char *filename, int mode, |
107 | bool force, bool repipe, | |
45694aa7 | 108 | struct perf_tool *tool) |
94c744b6 | 109 | { |
efad1415 RR |
110 | struct perf_session *self; |
111 | struct stat st; | |
112 | size_t len; | |
113 | ||
114 | if (!filename || !strlen(filename)) { | |
115 | if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) | |
116 | filename = "-"; | |
117 | else | |
118 | filename = "perf.data"; | |
119 | } | |
120 | ||
121 | len = strlen(filename); | |
122 | self = zalloc(sizeof(*self) + len); | |
94c744b6 ACM |
123 | |
124 | if (self == NULL) | |
125 | goto out; | |
126 | ||
94c744b6 | 127 | memcpy(self->filename, filename, len); |
55b44629 TG |
128 | /* |
129 | * On 64bit we can mmap the data file in one go. No need for tiny mmap | |
130 | * slices. On 32bit we use 32MB. | |
131 | */ | |
132 | #if BITS_PER_LONG == 64 | |
133 | self->mmap_window = ULLONG_MAX; | |
134 | #else | |
135 | self->mmap_window = 32 * 1024 * 1024ULL; | |
136 | #endif | |
23346f21 | 137 | self->machines = RB_ROOT; |
454c407e | 138 | self->repipe = repipe; |
a1225dec | 139 | INIT_LIST_HEAD(&self->ordered_samples.samples); |
020bb75a | 140 | INIT_LIST_HEAD(&self->ordered_samples.sample_cache); |
5c891f38 | 141 | INIT_LIST_HEAD(&self->ordered_samples.to_free); |
1f626bc3 | 142 | machine__init(&self->host_machine, "", HOST_KERNEL_ID); |
94c744b6 | 143 | |
64abebf7 ACM |
144 | if (mode == O_RDONLY) { |
145 | if (perf_session__open(self, force) < 0) | |
146 | goto out_delete; | |
a91e5431 | 147 | perf_session__update_sample_type(self); |
64abebf7 ACM |
148 | } else if (mode == O_WRONLY) { |
149 | /* | |
150 | * In O_RDONLY mode this will be performed when reading the | |
8115d60c | 151 | * kernel MMAP event, in perf_event__process_mmap(). |
64abebf7 ACM |
152 | */ |
153 | if (perf_session__create_kernel_maps(self) < 0) | |
154 | goto out_delete; | |
155 | } | |
d549c769 | 156 | |
45694aa7 ACM |
157 | if (tool && tool->ordering_requires_timestamps && |
158 | tool->ordered_samples && !self->sample_id_all) { | |
21ef97f0 | 159 | dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); |
45694aa7 | 160 | tool->ordered_samples = false; |
21ef97f0 IM |
161 | } |
162 | ||
94c744b6 ACM |
163 | out: |
164 | return self; | |
4aa65636 ACM |
165 | out_delete: |
166 | perf_session__delete(self); | |
167 | return NULL; | |
94c744b6 ACM |
168 | } |
169 | ||
b424eba2 | 170 | static void machine__delete_dead_threads(struct machine *machine) |
d65a458b ACM |
171 | { |
172 | struct thread *n, *t; | |
173 | ||
b424eba2 | 174 | list_for_each_entry_safe(t, n, &machine->dead_threads, node) { |
d65a458b ACM |
175 | list_del(&t->node); |
176 | thread__delete(t); | |
177 | } | |
178 | } | |
179 | ||
b424eba2 ACM |
180 | static void perf_session__delete_dead_threads(struct perf_session *session) |
181 | { | |
182 | machine__delete_dead_threads(&session->host_machine); | |
183 | } | |
184 | ||
185 | static void machine__delete_threads(struct machine *self) | |
d65a458b ACM |
186 | { |
187 | struct rb_node *nd = rb_first(&self->threads); | |
188 | ||
189 | while (nd) { | |
190 | struct thread *t = rb_entry(nd, struct thread, rb_node); | |
191 | ||
192 | rb_erase(&t->rb_node, &self->threads); | |
193 | nd = rb_next(nd); | |
194 | thread__delete(t); | |
195 | } | |
196 | } | |
197 | ||
b424eba2 ACM |
198 | static void perf_session__delete_threads(struct perf_session *session) |
199 | { | |
200 | machine__delete_threads(&session->host_machine); | |
201 | } | |
202 | ||
94c744b6 ACM |
203 | void perf_session__delete(struct perf_session *self) |
204 | { | |
076c6e45 | 205 | perf_session__destroy_kernel_maps(self); |
d65a458b ACM |
206 | perf_session__delete_dead_threads(self); |
207 | perf_session__delete_threads(self); | |
208 | machine__exit(&self->host_machine); | |
94c744b6 ACM |
209 | close(self->fd); |
210 | free(self); | |
211 | } | |
a328626b | 212 | |
b424eba2 | 213 | void machine__remove_thread(struct machine *self, struct thread *th) |
720a3aeb | 214 | { |
70597f21 | 215 | self->last_match = NULL; |
720a3aeb ACM |
216 | rb_erase(&th->rb_node, &self->threads); |
217 | /* | |
218 | * We may have references to this thread, for instance in some hist_entry | |
219 | * instances, so just move them to a separate list. | |
220 | */ | |
221 | list_add_tail(&th->node, &self->dead_threads); | |
222 | } | |
223 | ||
a328626b ACM |
224 | static bool symbol__match_parent_regex(struct symbol *sym) |
225 | { | |
226 | if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0)) | |
227 | return 1; | |
228 | ||
229 | return 0; | |
230 | } | |
231 | ||
743eb868 ACM |
232 | int machine__resolve_callchain(struct machine *self, struct perf_evsel *evsel, |
233 | struct thread *thread, | |
234 | struct ip_callchain *chain, | |
235 | struct symbol **parent) | |
a328626b ACM |
236 | { |
237 | u8 cpumode = PERF_RECORD_MISC_USER; | |
a328626b | 238 | unsigned int i; |
1b3a0e95 | 239 | int err; |
a328626b | 240 | |
246d4ce8 | 241 | callchain_cursor_reset(&evsel->hists.callchain_cursor); |
a328626b ACM |
242 | |
243 | for (i = 0; i < chain->nr; i++) { | |
d797fdc5 | 244 | u64 ip; |
a328626b ACM |
245 | struct addr_location al; |
246 | ||
d797fdc5 SL |
247 | if (callchain_param.order == ORDER_CALLEE) |
248 | ip = chain->ips[i]; | |
249 | else | |
250 | ip = chain->ips[chain->nr - i - 1]; | |
251 | ||
a328626b ACM |
252 | if (ip >= PERF_CONTEXT_MAX) { |
253 | switch (ip) { | |
254 | case PERF_CONTEXT_HV: | |
255 | cpumode = PERF_RECORD_MISC_HYPERVISOR; break; | |
256 | case PERF_CONTEXT_KERNEL: | |
257 | cpumode = PERF_RECORD_MISC_KERNEL; break; | |
258 | case PERF_CONTEXT_USER: | |
259 | cpumode = PERF_RECORD_MISC_USER; break; | |
260 | default: | |
261 | break; | |
262 | } | |
263 | continue; | |
264 | } | |
265 | ||
a1645ce1 | 266 | al.filtered = false; |
a328626b | 267 | thread__find_addr_location(thread, self, cpumode, |
743eb868 | 268 | MAP__FUNCTION, ip, &al, NULL); |
a328626b ACM |
269 | if (al.sym != NULL) { |
270 | if (sort__has_parent && !*parent && | |
271 | symbol__match_parent_regex(al.sym)) | |
272 | *parent = al.sym; | |
d599db3f | 273 | if (!symbol_conf.use_callchain) |
a328626b | 274 | break; |
a328626b | 275 | } |
1b3a0e95 | 276 | |
246d4ce8 | 277 | err = callchain_cursor_append(&evsel->hists.callchain_cursor, |
1b3a0e95 FW |
278 | ip, al.map, al.sym); |
279 | if (err) | |
280 | return err; | |
a328626b ACM |
281 | } |
282 | ||
1b3a0e95 | 283 | return 0; |
a328626b | 284 | } |
06aae590 | 285 | |
d20deb64 ACM |
286 | static int process_event_synth_tracing_data_stub(union perf_event *event __used, |
287 | struct perf_session *session __used) | |
288 | { | |
289 | dump_printf(": unhandled!\n"); | |
290 | return 0; | |
291 | } | |
292 | ||
10d0f086 ACM |
293 | static int process_event_synth_attr_stub(union perf_event *event __used, |
294 | struct perf_evlist **pevlist __used) | |
295 | { | |
296 | dump_printf(": unhandled!\n"); | |
297 | return 0; | |
298 | } | |
299 | ||
45694aa7 | 300 | static int process_event_sample_stub(struct perf_tool *tool __used, |
d20deb64 | 301 | union perf_event *event __used, |
9e69c210 ACM |
302 | struct perf_sample *sample __used, |
303 | struct perf_evsel *evsel __used, | |
743eb868 | 304 | struct machine *machine __used) |
9e69c210 ACM |
305 | { |
306 | dump_printf(": unhandled!\n"); | |
307 | return 0; | |
308 | } | |
309 | ||
45694aa7 | 310 | static int process_event_stub(struct perf_tool *tool __used, |
d20deb64 | 311 | union perf_event *event __used, |
8d50e5b4 | 312 | struct perf_sample *sample __used, |
743eb868 | 313 | struct machine *machine __used) |
06aae590 ACM |
314 | { |
315 | dump_printf(": unhandled!\n"); | |
316 | return 0; | |
317 | } | |
318 | ||
45694aa7 | 319 | static int process_finished_round_stub(struct perf_tool *tool __used, |
d20deb64 | 320 | union perf_event *event __used, |
743eb868 ACM |
321 | struct perf_session *perf_session __used) |
322 | { | |
323 | dump_printf(": unhandled!\n"); | |
324 | return 0; | |
325 | } | |
326 | ||
45694aa7 | 327 | static int process_event_type_stub(struct perf_tool *tool __used, |
743eb868 | 328 | union perf_event *event __used) |
d6b17beb FW |
329 | { |
330 | dump_printf(": unhandled!\n"); | |
331 | return 0; | |
332 | } | |
333 | ||
45694aa7 | 334 | static int process_finished_round(struct perf_tool *tool, |
d20deb64 ACM |
335 | union perf_event *event, |
336 | struct perf_session *session); | |
d6b17beb | 337 | |
45694aa7 | 338 | static void perf_tool__fill_defaults(struct perf_tool *tool) |
06aae590 | 339 | { |
45694aa7 ACM |
340 | if (tool->sample == NULL) |
341 | tool->sample = process_event_sample_stub; | |
342 | if (tool->mmap == NULL) | |
343 | tool->mmap = process_event_stub; | |
344 | if (tool->comm == NULL) | |
345 | tool->comm = process_event_stub; | |
346 | if (tool->fork == NULL) | |
347 | tool->fork = process_event_stub; | |
348 | if (tool->exit == NULL) | |
349 | tool->exit = process_event_stub; | |
350 | if (tool->lost == NULL) | |
351 | tool->lost = perf_event__process_lost; | |
352 | if (tool->read == NULL) | |
353 | tool->read = process_event_sample_stub; | |
354 | if (tool->throttle == NULL) | |
355 | tool->throttle = process_event_stub; | |
356 | if (tool->unthrottle == NULL) | |
357 | tool->unthrottle = process_event_stub; | |
358 | if (tool->attr == NULL) | |
359 | tool->attr = process_event_synth_attr_stub; | |
360 | if (tool->event_type == NULL) | |
361 | tool->event_type = process_event_type_stub; | |
362 | if (tool->tracing_data == NULL) | |
363 | tool->tracing_data = process_event_synth_tracing_data_stub; | |
364 | if (tool->build_id == NULL) | |
365 | tool->build_id = process_finished_round_stub; | |
366 | if (tool->finished_round == NULL) { | |
367 | if (tool->ordered_samples) | |
368 | tool->finished_round = process_finished_round; | |
d6b17beb | 369 | else |
45694aa7 | 370 | tool->finished_round = process_finished_round_stub; |
d6b17beb | 371 | } |
06aae590 ACM |
372 | } |
373 | ||
ba21594c ACM |
374 | void mem_bswap_64(void *src, int byte_size) |
375 | { | |
376 | u64 *m = src; | |
377 | ||
378 | while (byte_size > 0) { | |
379 | *m = bswap_64(*m); | |
380 | byte_size -= sizeof(u64); | |
381 | ++m; | |
382 | } | |
383 | } | |
384 | ||
8115d60c | 385 | static void perf_event__all64_swap(union perf_event *event) |
ba21594c | 386 | { |
8115d60c ACM |
387 | struct perf_event_header *hdr = &event->header; |
388 | mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); | |
ba21594c ACM |
389 | } |
390 | ||
8115d60c | 391 | static void perf_event__comm_swap(union perf_event *event) |
ba21594c | 392 | { |
8115d60c ACM |
393 | event->comm.pid = bswap_32(event->comm.pid); |
394 | event->comm.tid = bswap_32(event->comm.tid); | |
ba21594c ACM |
395 | } |
396 | ||
8115d60c | 397 | static void perf_event__mmap_swap(union perf_event *event) |
ba21594c | 398 | { |
8115d60c ACM |
399 | event->mmap.pid = bswap_32(event->mmap.pid); |
400 | event->mmap.tid = bswap_32(event->mmap.tid); | |
401 | event->mmap.start = bswap_64(event->mmap.start); | |
402 | event->mmap.len = bswap_64(event->mmap.len); | |
403 | event->mmap.pgoff = bswap_64(event->mmap.pgoff); | |
ba21594c ACM |
404 | } |
405 | ||
8115d60c | 406 | static void perf_event__task_swap(union perf_event *event) |
ba21594c | 407 | { |
8115d60c ACM |
408 | event->fork.pid = bswap_32(event->fork.pid); |
409 | event->fork.tid = bswap_32(event->fork.tid); | |
410 | event->fork.ppid = bswap_32(event->fork.ppid); | |
411 | event->fork.ptid = bswap_32(event->fork.ptid); | |
412 | event->fork.time = bswap_64(event->fork.time); | |
ba21594c ACM |
413 | } |
414 | ||
8115d60c | 415 | static void perf_event__read_swap(union perf_event *event) |
ba21594c | 416 | { |
8115d60c ACM |
417 | event->read.pid = bswap_32(event->read.pid); |
418 | event->read.tid = bswap_32(event->read.tid); | |
419 | event->read.value = bswap_64(event->read.value); | |
420 | event->read.time_enabled = bswap_64(event->read.time_enabled); | |
421 | event->read.time_running = bswap_64(event->read.time_running); | |
422 | event->read.id = bswap_64(event->read.id); | |
ba21594c ACM |
423 | } |
424 | ||
eda3913b DA |
425 | /* exported for swapping attributes in file header */ |
426 | void perf_event__attr_swap(struct perf_event_attr *attr) | |
427 | { | |
428 | attr->type = bswap_32(attr->type); | |
429 | attr->size = bswap_32(attr->size); | |
430 | attr->config = bswap_64(attr->config); | |
431 | attr->sample_period = bswap_64(attr->sample_period); | |
432 | attr->sample_type = bswap_64(attr->sample_type); | |
433 | attr->read_format = bswap_64(attr->read_format); | |
434 | attr->wakeup_events = bswap_32(attr->wakeup_events); | |
435 | attr->bp_type = bswap_32(attr->bp_type); | |
436 | attr->bp_addr = bswap_64(attr->bp_addr); | |
437 | attr->bp_len = bswap_64(attr->bp_len); | |
438 | } | |
439 | ||
440 | static void perf_event__hdr_attr_swap(union perf_event *event) | |
2c46dbb5 TZ |
441 | { |
442 | size_t size; | |
443 | ||
eda3913b | 444 | perf_event__attr_swap(&event->attr.attr); |
2c46dbb5 | 445 | |
8115d60c ACM |
446 | size = event->header.size; |
447 | size -= (void *)&event->attr.id - (void *)event; | |
448 | mem_bswap_64(event->attr.id, size); | |
2c46dbb5 TZ |
449 | } |
450 | ||
8115d60c | 451 | static void perf_event__event_type_swap(union perf_event *event) |
cd19a035 | 452 | { |
8115d60c ACM |
453 | event->event_type.event_type.event_id = |
454 | bswap_64(event->event_type.event_type.event_id); | |
cd19a035 TZ |
455 | } |
456 | ||
8115d60c | 457 | static void perf_event__tracing_data_swap(union perf_event *event) |
9215545e | 458 | { |
8115d60c | 459 | event->tracing_data.size = bswap_32(event->tracing_data.size); |
9215545e TZ |
460 | } |
461 | ||
8115d60c | 462 | typedef void (*perf_event__swap_op)(union perf_event *event); |
ba21594c | 463 | |
8115d60c ACM |
464 | static perf_event__swap_op perf_event__swap_ops[] = { |
465 | [PERF_RECORD_MMAP] = perf_event__mmap_swap, | |
466 | [PERF_RECORD_COMM] = perf_event__comm_swap, | |
467 | [PERF_RECORD_FORK] = perf_event__task_swap, | |
468 | [PERF_RECORD_EXIT] = perf_event__task_swap, | |
469 | [PERF_RECORD_LOST] = perf_event__all64_swap, | |
470 | [PERF_RECORD_READ] = perf_event__read_swap, | |
471 | [PERF_RECORD_SAMPLE] = perf_event__all64_swap, | |
eda3913b | 472 | [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, |
8115d60c ACM |
473 | [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, |
474 | [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, | |
475 | [PERF_RECORD_HEADER_BUILD_ID] = NULL, | |
476 | [PERF_RECORD_HEADER_MAX] = NULL, | |
ba21594c ACM |
477 | }; |
478 | ||
c61e52ee FW |
479 | struct sample_queue { |
480 | u64 timestamp; | |
e4c2df13 | 481 | u64 file_offset; |
8115d60c | 482 | union perf_event *event; |
c61e52ee FW |
483 | struct list_head list; |
484 | }; | |
485 | ||
020bb75a TG |
486 | static void perf_session_free_sample_buffers(struct perf_session *session) |
487 | { | |
488 | struct ordered_samples *os = &session->ordered_samples; | |
489 | ||
5c891f38 | 490 | while (!list_empty(&os->to_free)) { |
020bb75a TG |
491 | struct sample_queue *sq; |
492 | ||
5c891f38 | 493 | sq = list_entry(os->to_free.next, struct sample_queue, list); |
020bb75a TG |
494 | list_del(&sq->list); |
495 | free(sq); | |
496 | } | |
497 | } | |
498 | ||
cbf41645 | 499 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 500 | union perf_event *event, |
8d50e5b4 | 501 | struct perf_sample *sample, |
45694aa7 | 502 | struct perf_tool *tool, |
f74725dc | 503 | u64 file_offset); |
cbf41645 | 504 | |
c61e52ee | 505 | static void flush_sample_queue(struct perf_session *s, |
45694aa7 | 506 | struct perf_tool *tool) |
c61e52ee | 507 | { |
a1225dec TG |
508 | struct ordered_samples *os = &s->ordered_samples; |
509 | struct list_head *head = &os->samples; | |
c61e52ee | 510 | struct sample_queue *tmp, *iter; |
8d50e5b4 | 511 | struct perf_sample sample; |
a1225dec TG |
512 | u64 limit = os->next_flush; |
513 | u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL; | |
88660563 | 514 | unsigned idx = 0, progress_next = os->nr_samples / 16; |
5538beca | 515 | int ret; |
c61e52ee | 516 | |
45694aa7 | 517 | if (!tool->ordered_samples || !limit) |
c61e52ee FW |
518 | return; |
519 | ||
520 | list_for_each_entry_safe(iter, tmp, head, list) { | |
521 | if (iter->timestamp > limit) | |
a1225dec | 522 | break; |
c61e52ee | 523 | |
5538beca FW |
524 | ret = perf_session__parse_sample(s, iter->event, &sample); |
525 | if (ret) | |
526 | pr_err("Can't parse sample, err = %d\n", ret); | |
527 | else | |
45694aa7 | 528 | perf_session_deliver_event(s, iter->event, &sample, tool, |
5538beca | 529 | iter->file_offset); |
c61e52ee | 530 | |
a1225dec | 531 | os->last_flush = iter->timestamp; |
c61e52ee | 532 | list_del(&iter->list); |
020bb75a | 533 | list_add(&iter->list, &os->sample_cache); |
88660563 ACM |
534 | if (++idx >= progress_next) { |
535 | progress_next += os->nr_samples / 16; | |
536 | ui_progress__update(idx, os->nr_samples, | |
537 | "Processing time ordered events..."); | |
538 | } | |
c61e52ee | 539 | } |
a1225dec TG |
540 | |
541 | if (list_empty(head)) { | |
542 | os->last_sample = NULL; | |
543 | } else if (last_ts <= limit) { | |
544 | os->last_sample = | |
545 | list_entry(head->prev, struct sample_queue, list); | |
546 | } | |
88660563 ACM |
547 | |
548 | os->nr_samples = 0; | |
c61e52ee FW |
549 | } |
550 | ||
d6b17beb FW |
551 | /* |
552 | * When perf record finishes a pass on every buffers, it records this pseudo | |
553 | * event. | |
554 | * We record the max timestamp t found in the pass n. | |
555 | * Assuming these timestamps are monotonic across cpus, we know that if | |
556 | * a buffer still has events with timestamps below t, they will be all | |
557 | * available and then read in the pass n + 1. | |
558 | * Hence when we start to read the pass n + 2, we can safely flush every | |
559 | * events with timestamps below t. | |
560 | * | |
561 | * ============ PASS n ================= | |
562 | * CPU 0 | CPU 1 | |
563 | * | | |
564 | * cnt1 timestamps | cnt2 timestamps | |
565 | * 1 | 2 | |
566 | * 2 | 3 | |
567 | * - | 4 <--- max recorded | |
568 | * | |
569 | * ============ PASS n + 1 ============== | |
570 | * CPU 0 | CPU 1 | |
571 | * | | |
572 | * cnt1 timestamps | cnt2 timestamps | |
573 | * 3 | 5 | |
574 | * 4 | 6 | |
575 | * 5 | 7 <---- max recorded | |
576 | * | |
577 | * Flush every events below timestamp 4 | |
578 | * | |
579 | * ============ PASS n + 2 ============== | |
580 | * CPU 0 | CPU 1 | |
581 | * | | |
582 | * cnt1 timestamps | cnt2 timestamps | |
583 | * 6 | 8 | |
584 | * 7 | 9 | |
585 | * - | 10 | |
586 | * | |
587 | * Flush every events below timestamp 7 | |
588 | * etc... | |
589 | */ | |
45694aa7 | 590 | static int process_finished_round(struct perf_tool *tool, |
d20deb64 ACM |
591 | union perf_event *event __used, |
592 | struct perf_session *session) | |
d6b17beb | 593 | { |
45694aa7 | 594 | flush_sample_queue(session, tool); |
d6b17beb FW |
595 | session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; |
596 | ||
597 | return 0; | |
598 | } | |
599 | ||
c61e52ee | 600 | /* The queue is ordered by time */ |
cbf41645 | 601 | static void __queue_event(struct sample_queue *new, struct perf_session *s) |
c61e52ee | 602 | { |
a1225dec TG |
603 | struct ordered_samples *os = &s->ordered_samples; |
604 | struct sample_queue *sample = os->last_sample; | |
605 | u64 timestamp = new->timestamp; | |
606 | struct list_head *p; | |
c61e52ee | 607 | |
88660563 | 608 | ++os->nr_samples; |
a1225dec | 609 | os->last_sample = new; |
c61e52ee | 610 | |
a1225dec TG |
611 | if (!sample) { |
612 | list_add(&new->list, &os->samples); | |
613 | os->max_timestamp = timestamp; | |
c61e52ee FW |
614 | return; |
615 | } | |
616 | ||
617 | /* | |
a1225dec TG |
618 | * last_sample might point to some random place in the list as it's |
619 | * the last queued event. We expect that the new event is close to | |
620 | * this. | |
c61e52ee | 621 | */ |
a1225dec TG |
622 | if (sample->timestamp <= timestamp) { |
623 | while (sample->timestamp <= timestamp) { | |
624 | p = sample->list.next; | |
625 | if (p == &os->samples) { | |
626 | list_add_tail(&new->list, &os->samples); | |
627 | os->max_timestamp = timestamp; | |
628 | return; | |
629 | } | |
630 | sample = list_entry(p, struct sample_queue, list); | |
631 | } | |
632 | list_add_tail(&new->list, &sample->list); | |
633 | } else { | |
634 | while (sample->timestamp > timestamp) { | |
635 | p = sample->list.prev; | |
636 | if (p == &os->samples) { | |
637 | list_add(&new->list, &os->samples); | |
638 | return; | |
639 | } | |
640 | sample = list_entry(p, struct sample_queue, list); | |
641 | } | |
642 | list_add(&new->list, &sample->list); | |
643 | } | |
c61e52ee FW |
644 | } |
645 | ||
5c891f38 TG |
646 | #define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue)) |
647 | ||
8115d60c | 648 | static int perf_session_queue_event(struct perf_session *s, union perf_event *event, |
8d50e5b4 | 649 | struct perf_sample *sample, u64 file_offset) |
c61e52ee | 650 | { |
5c891f38 TG |
651 | struct ordered_samples *os = &s->ordered_samples; |
652 | struct list_head *sc = &os->sample_cache; | |
8d50e5b4 | 653 | u64 timestamp = sample->time; |
c61e52ee | 654 | struct sample_queue *new; |
c61e52ee | 655 | |
79a14c1f | 656 | if (!timestamp || timestamp == ~0ULL) |
cbf41645 TG |
657 | return -ETIME; |
658 | ||
c61e52ee FW |
659 | if (timestamp < s->ordered_samples.last_flush) { |
660 | printf("Warning: Timestamp below last timeslice flush\n"); | |
661 | return -EINVAL; | |
662 | } | |
663 | ||
020bb75a TG |
664 | if (!list_empty(sc)) { |
665 | new = list_entry(sc->next, struct sample_queue, list); | |
666 | list_del(&new->list); | |
5c891f38 TG |
667 | } else if (os->sample_buffer) { |
668 | new = os->sample_buffer + os->sample_buffer_idx; | |
669 | if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER) | |
670 | os->sample_buffer = NULL; | |
020bb75a | 671 | } else { |
5c891f38 TG |
672 | os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); |
673 | if (!os->sample_buffer) | |
020bb75a | 674 | return -ENOMEM; |
5c891f38 TG |
675 | list_add(&os->sample_buffer->list, &os->to_free); |
676 | os->sample_buffer_idx = 2; | |
677 | new = os->sample_buffer + 1; | |
020bb75a | 678 | } |
c61e52ee FW |
679 | |
680 | new->timestamp = timestamp; | |
e4c2df13 | 681 | new->file_offset = file_offset; |
fe174207 | 682 | new->event = event; |
c61e52ee | 683 | |
cbf41645 | 684 | __queue_event(new, s); |
640c03ce | 685 | |
640c03ce ACM |
686 | return 0; |
687 | } | |
c61e52ee | 688 | |
8d50e5b4 | 689 | static void callchain__printf(struct perf_sample *sample) |
640c03ce ACM |
690 | { |
691 | unsigned int i; | |
c61e52ee | 692 | |
9486aa38 | 693 | printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); |
640c03ce ACM |
694 | |
695 | for (i = 0; i < sample->callchain->nr; i++) | |
9486aa38 ACM |
696 | printf("..... %2d: %016" PRIx64 "\n", |
697 | i, sample->callchain->ips[i]); | |
c61e52ee FW |
698 | } |
699 | ||
9c90a61c | 700 | static void perf_session__print_tstamp(struct perf_session *session, |
8115d60c | 701 | union perf_event *event, |
8d50e5b4 | 702 | struct perf_sample *sample) |
9c90a61c ACM |
703 | { |
704 | if (event->header.type != PERF_RECORD_SAMPLE && | |
705 | !session->sample_id_all) { | |
706 | fputs("-1 -1 ", stdout); | |
707 | return; | |
708 | } | |
709 | ||
710 | if ((session->sample_type & PERF_SAMPLE_CPU)) | |
711 | printf("%u ", sample->cpu); | |
712 | ||
713 | if (session->sample_type & PERF_SAMPLE_TIME) | |
9486aa38 | 714 | printf("%" PRIu64 " ", sample->time); |
9c90a61c ACM |
715 | } |
716 | ||
8115d60c | 717 | static void dump_event(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 718 | u64 file_offset, struct perf_sample *sample) |
9aefcab0 TG |
719 | { |
720 | if (!dump_trace) | |
721 | return; | |
722 | ||
9486aa38 ACM |
723 | printf("\n%#" PRIx64 " [%#x]: event: %d\n", |
724 | file_offset, event->header.size, event->header.type); | |
9aefcab0 TG |
725 | |
726 | trace_event(event); | |
727 | ||
728 | if (sample) | |
729 | perf_session__print_tstamp(session, event, sample); | |
730 | ||
9486aa38 | 731 | printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, |
8115d60c | 732 | event->header.size, perf_event__name(event->header.type)); |
9aefcab0 TG |
733 | } |
734 | ||
8115d60c | 735 | static void dump_sample(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 736 | struct perf_sample *sample) |
9aefcab0 | 737 | { |
ddbc24b7 ACM |
738 | if (!dump_trace) |
739 | return; | |
740 | ||
7cec0922 | 741 | printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", |
9486aa38 | 742 | event->header.misc, sample->pid, sample->tid, sample->ip, |
7cec0922 | 743 | sample->period, sample->addr); |
9aefcab0 TG |
744 | |
745 | if (session->sample_type & PERF_SAMPLE_CALLCHAIN) | |
ddbc24b7 | 746 | callchain__printf(sample); |
9aefcab0 TG |
747 | } |
748 | ||
743eb868 ACM |
749 | static struct machine * |
750 | perf_session__find_machine_for_cpumode(struct perf_session *session, | |
751 | union perf_event *event) | |
752 | { | |
753 | const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
754 | ||
755 | if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) | |
756 | return perf_session__find_machine(session, event->ip.pid); | |
757 | ||
758 | return perf_session__find_host_machine(session); | |
759 | } | |
760 | ||
cbf41645 | 761 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 762 | union perf_event *event, |
8d50e5b4 | 763 | struct perf_sample *sample, |
45694aa7 | 764 | struct perf_tool *tool, |
532e7269 | 765 | u64 file_offset) |
cbf41645 | 766 | { |
9e69c210 | 767 | struct perf_evsel *evsel; |
743eb868 | 768 | struct machine *machine; |
9e69c210 | 769 | |
532e7269 TG |
770 | dump_event(session, event, file_offset, sample); |
771 | ||
7b27509f ACM |
772 | evsel = perf_evlist__id2evsel(session->evlist, sample->id); |
773 | if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) { | |
774 | /* | |
775 | * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here | |
776 | * because the tools right now may apply filters, discarding | |
777 | * some of the samples. For consistency, in the future we | |
778 | * should have something like nr_filtered_samples and remove | |
779 | * the sample->period from total_sample_period, etc, KISS for | |
780 | * now tho. | |
781 | * | |
782 | * Also testing against NULL allows us to handle files without | |
783 | * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the | |
784 | * future probably it'll be a good idea to restrict event | |
785 | * processing via perf_session to files with both set. | |
786 | */ | |
787 | hists__inc_nr_events(&evsel->hists, event->header.type); | |
788 | } | |
789 | ||
743eb868 ACM |
790 | machine = perf_session__find_machine_for_cpumode(session, event); |
791 | ||
cbf41645 TG |
792 | switch (event->header.type) { |
793 | case PERF_RECORD_SAMPLE: | |
532e7269 | 794 | dump_sample(session, event, sample); |
9e69c210 ACM |
795 | if (evsel == NULL) { |
796 | ++session->hists.stats.nr_unknown_id; | |
797 | return -1; | |
798 | } | |
45694aa7 | 799 | return tool->sample(tool, event, sample, evsel, machine); |
cbf41645 | 800 | case PERF_RECORD_MMAP: |
45694aa7 | 801 | return tool->mmap(tool, event, sample, machine); |
cbf41645 | 802 | case PERF_RECORD_COMM: |
45694aa7 | 803 | return tool->comm(tool, event, sample, machine); |
cbf41645 | 804 | case PERF_RECORD_FORK: |
45694aa7 | 805 | return tool->fork(tool, event, sample, machine); |
cbf41645 | 806 | case PERF_RECORD_EXIT: |
45694aa7 | 807 | return tool->exit(tool, event, sample, machine); |
cbf41645 | 808 | case PERF_RECORD_LOST: |
45694aa7 | 809 | if (tool->lost == perf_event__process_lost) |
743eb868 | 810 | session->hists.stats.total_lost += event->lost.lost; |
45694aa7 | 811 | return tool->lost(tool, event, sample, machine); |
cbf41645 | 812 | case PERF_RECORD_READ: |
45694aa7 | 813 | return tool->read(tool, event, sample, evsel, machine); |
cbf41645 | 814 | case PERF_RECORD_THROTTLE: |
45694aa7 | 815 | return tool->throttle(tool, event, sample, machine); |
cbf41645 | 816 | case PERF_RECORD_UNTHROTTLE: |
45694aa7 | 817 | return tool->unthrottle(tool, event, sample, machine); |
cbf41645 TG |
818 | default: |
819 | ++session->hists.stats.nr_unknown_events; | |
820 | return -1; | |
821 | } | |
822 | } | |
823 | ||
3dfc2c0a | 824 | static int perf_session__preprocess_sample(struct perf_session *session, |
8115d60c | 825 | union perf_event *event, struct perf_sample *sample) |
3dfc2c0a TG |
826 | { |
827 | if (event->header.type != PERF_RECORD_SAMPLE || | |
828 | !(session->sample_type & PERF_SAMPLE_CALLCHAIN)) | |
829 | return 0; | |
830 | ||
831 | if (!ip_callchain__valid(sample->callchain, event)) { | |
832 | pr_debug("call-chain problem with event, skipping it.\n"); | |
833 | ++session->hists.stats.nr_invalid_chains; | |
834 | session->hists.stats.total_invalid_chains += sample->period; | |
835 | return -EINVAL; | |
836 | } | |
837 | return 0; | |
838 | } | |
839 | ||
8115d60c | 840 | static int perf_session__process_user_event(struct perf_session *session, union perf_event *event, |
45694aa7 | 841 | struct perf_tool *tool, u64 file_offset) |
06aae590 | 842 | { |
10d0f086 ACM |
843 | int err; |
844 | ||
ba74f064 | 845 | dump_event(session, event, file_offset, NULL); |
06aae590 | 846 | |
cbf41645 | 847 | /* These events are processed right away */ |
06aae590 | 848 | switch (event->header.type) { |
2c46dbb5 | 849 | case PERF_RECORD_HEADER_ATTR: |
45694aa7 | 850 | err = tool->attr(event, &session->evlist); |
10d0f086 ACM |
851 | if (err == 0) |
852 | perf_session__update_sample_type(session); | |
853 | return err; | |
cd19a035 | 854 | case PERF_RECORD_HEADER_EVENT_TYPE: |
45694aa7 | 855 | return tool->event_type(tool, event); |
9215545e TZ |
856 | case PERF_RECORD_HEADER_TRACING_DATA: |
857 | /* setup for reading amidst mmap */ | |
cbf41645 | 858 | lseek(session->fd, file_offset, SEEK_SET); |
45694aa7 | 859 | return tool->tracing_data(event, session); |
c7929e47 | 860 | case PERF_RECORD_HEADER_BUILD_ID: |
45694aa7 | 861 | return tool->build_id(tool, event, session); |
d6b17beb | 862 | case PERF_RECORD_FINISHED_ROUND: |
45694aa7 | 863 | return tool->finished_round(tool, event, session); |
06aae590 | 864 | default: |
ba74f064 | 865 | return -EINVAL; |
06aae590 | 866 | } |
ba74f064 TG |
867 | } |
868 | ||
869 | static int perf_session__process_event(struct perf_session *session, | |
8115d60c | 870 | union perf_event *event, |
45694aa7 | 871 | struct perf_tool *tool, |
ba74f064 TG |
872 | u64 file_offset) |
873 | { | |
8d50e5b4 | 874 | struct perf_sample sample; |
ba74f064 TG |
875 | int ret; |
876 | ||
8115d60c ACM |
877 | if (session->header.needs_swap && |
878 | perf_event__swap_ops[event->header.type]) | |
879 | perf_event__swap_ops[event->header.type](event); | |
ba74f064 TG |
880 | |
881 | if (event->header.type >= PERF_RECORD_HEADER_MAX) | |
882 | return -EINVAL; | |
883 | ||
884 | hists__inc_nr_events(&session->hists, event->header.type); | |
885 | ||
886 | if (event->header.type >= PERF_RECORD_USER_TYPE_START) | |
45694aa7 | 887 | return perf_session__process_user_event(session, event, tool, file_offset); |
cbf41645 | 888 | |
3dfc2c0a TG |
889 | /* |
890 | * For all kernel events we get the sample data | |
891 | */ | |
5538beca FW |
892 | ret = perf_session__parse_sample(session, event, &sample); |
893 | if (ret) | |
894 | return ret; | |
3dfc2c0a TG |
895 | |
896 | /* Preprocess sample records - precheck callchains */ | |
897 | if (perf_session__preprocess_sample(session, event, &sample)) | |
898 | return 0; | |
899 | ||
45694aa7 | 900 | if (tool->ordered_samples) { |
e4c2df13 TG |
901 | ret = perf_session_queue_event(session, event, &sample, |
902 | file_offset); | |
cbf41645 TG |
903 | if (ret != -ETIME) |
904 | return ret; | |
905 | } | |
906 | ||
45694aa7 | 907 | return perf_session_deliver_event(session, event, &sample, tool, |
f74725dc | 908 | file_offset); |
06aae590 ACM |
909 | } |
910 | ||
ba21594c ACM |
911 | void perf_event_header__bswap(struct perf_event_header *self) |
912 | { | |
913 | self->type = bswap_32(self->type); | |
914 | self->misc = bswap_16(self->misc); | |
915 | self->size = bswap_16(self->size); | |
916 | } | |
917 | ||
b424eba2 ACM |
918 | struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) |
919 | { | |
920 | return machine__findnew_thread(&session->host_machine, pid); | |
921 | } | |
922 | ||
06aae590 ACM |
923 | static struct thread *perf_session__register_idle_thread(struct perf_session *self) |
924 | { | |
925 | struct thread *thread = perf_session__findnew(self, 0); | |
926 | ||
927 | if (thread == NULL || thread__set_comm(thread, "swapper")) { | |
928 | pr_err("problem inserting idle task.\n"); | |
929 | thread = NULL; | |
930 | } | |
931 | ||
932 | return thread; | |
933 | } | |
934 | ||
11095994 | 935 | static void perf_session__warn_about_errors(const struct perf_session *session, |
45694aa7 | 936 | const struct perf_tool *tool) |
11095994 | 937 | { |
45694aa7 | 938 | if (tool->lost == perf_event__process_lost && |
7b27509f ACM |
939 | session->hists.stats.nr_events[PERF_RECORD_LOST] != 0) { |
940 | ui__warning("Processed %d events and lost %d chunks!\n\n" | |
941 | "Check IO/CPU overload!\n\n", | |
942 | session->hists.stats.nr_events[0], | |
943 | session->hists.stats.nr_events[PERF_RECORD_LOST]); | |
11095994 ACM |
944 | } |
945 | ||
946 | if (session->hists.stats.nr_unknown_events != 0) { | |
947 | ui__warning("Found %u unknown events!\n\n" | |
948 | "Is this an older tool processing a perf.data " | |
949 | "file generated by a more recent tool?\n\n" | |
950 | "If that is not the case, consider " | |
951 | "reporting to linux-kernel@vger.kernel.org.\n\n", | |
952 | session->hists.stats.nr_unknown_events); | |
953 | } | |
954 | ||
9e69c210 ACM |
955 | if (session->hists.stats.nr_unknown_id != 0) { |
956 | ui__warning("%u samples with id not present in the header\n", | |
957 | session->hists.stats.nr_unknown_id); | |
958 | } | |
959 | ||
11095994 ACM |
960 | if (session->hists.stats.nr_invalid_chains != 0) { |
961 | ui__warning("Found invalid callchains!\n\n" | |
962 | "%u out of %u events were discarded for this reason.\n\n" | |
963 | "Consider reporting to linux-kernel@vger.kernel.org.\n\n", | |
964 | session->hists.stats.nr_invalid_chains, | |
965 | session->hists.stats.nr_events[PERF_RECORD_SAMPLE]); | |
966 | } | |
967 | } | |
968 | ||
8dc58101 TZ |
969 | #define session_done() (*(volatile int *)(&session_done)) |
970 | volatile int session_done; | |
971 | ||
972 | static int __perf_session__process_pipe_events(struct perf_session *self, | |
45694aa7 | 973 | struct perf_tool *tool) |
8dc58101 | 974 | { |
8115d60c | 975 | union perf_event event; |
8dc58101 TZ |
976 | uint32_t size; |
977 | int skip = 0; | |
978 | u64 head; | |
979 | int err; | |
980 | void *p; | |
981 | ||
45694aa7 | 982 | perf_tool__fill_defaults(tool); |
8dc58101 TZ |
983 | |
984 | head = 0; | |
985 | more: | |
1e7972cc | 986 | err = readn(self->fd, &event, sizeof(struct perf_event_header)); |
8dc58101 TZ |
987 | if (err <= 0) { |
988 | if (err == 0) | |
989 | goto done; | |
990 | ||
991 | pr_err("failed to read event header\n"); | |
992 | goto out_err; | |
993 | } | |
994 | ||
995 | if (self->header.needs_swap) | |
996 | perf_event_header__bswap(&event.header); | |
997 | ||
998 | size = event.header.size; | |
999 | if (size == 0) | |
1000 | size = 8; | |
1001 | ||
1002 | p = &event; | |
1003 | p += sizeof(struct perf_event_header); | |
1004 | ||
794e43b5 | 1005 | if (size - sizeof(struct perf_event_header)) { |
1e7972cc | 1006 | err = readn(self->fd, p, size - sizeof(struct perf_event_header)); |
794e43b5 TZ |
1007 | if (err <= 0) { |
1008 | if (err == 0) { | |
1009 | pr_err("unexpected end of event stream\n"); | |
1010 | goto done; | |
1011 | } | |
8dc58101 | 1012 | |
794e43b5 TZ |
1013 | pr_err("failed to read event data\n"); |
1014 | goto out_err; | |
1015 | } | |
8dc58101 TZ |
1016 | } |
1017 | ||
29c9862f | 1018 | if ((skip = perf_session__process_event(self, &event, tool, head)) < 0) { |
9486aa38 | 1019 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
8dc58101 TZ |
1020 | head, event.header.size, event.header.type); |
1021 | /* | |
1022 | * assume we lost track of the stream, check alignment, and | |
1023 | * increment a single u64 in the hope to catch on again 'soon'. | |
1024 | */ | |
1025 | if (unlikely(head & 7)) | |
1026 | head &= ~7ULL; | |
1027 | ||
1028 | size = 8; | |
1029 | } | |
1030 | ||
1031 | head += size; | |
1032 | ||
8dc58101 TZ |
1033 | if (skip > 0) |
1034 | head += skip; | |
1035 | ||
1036 | if (!session_done()) | |
1037 | goto more; | |
1038 | done: | |
1039 | err = 0; | |
1040 | out_err: | |
45694aa7 | 1041 | perf_session__warn_about_errors(self, tool); |
020bb75a | 1042 | perf_session_free_sample_buffers(self); |
8dc58101 TZ |
1043 | return err; |
1044 | } | |
1045 | ||
998bedc8 FW |
1046 | static union perf_event * |
1047 | fetch_mmaped_event(struct perf_session *session, | |
1048 | u64 head, size_t mmap_size, char *buf) | |
1049 | { | |
1050 | union perf_event *event; | |
1051 | ||
1052 | /* | |
1053 | * Ensure we have enough space remaining to read | |
1054 | * the size of the event in the headers. | |
1055 | */ | |
1056 | if (head + sizeof(event->header) > mmap_size) | |
1057 | return NULL; | |
1058 | ||
1059 | event = (union perf_event *)(buf + head); | |
1060 | ||
1061 | if (session->header.needs_swap) | |
1062 | perf_event_header__bswap(&event->header); | |
1063 | ||
1064 | if (head + event->header.size > mmap_size) | |
1065 | return NULL; | |
1066 | ||
1067 | return event; | |
1068 | } | |
1069 | ||
0331ee0c | 1070 | int __perf_session__process_events(struct perf_session *session, |
6122e4e4 | 1071 | u64 data_offset, u64 data_size, |
45694aa7 | 1072 | u64 file_size, struct perf_tool *tool) |
06aae590 | 1073 | { |
55b44629 | 1074 | u64 head, page_offset, file_offset, file_pos, progress_next; |
fe174207 | 1075 | int err, mmap_prot, mmap_flags, map_idx = 0; |
55b44629 | 1076 | size_t page_size, mmap_size; |
fe174207 | 1077 | char *buf, *mmaps[8]; |
8115d60c | 1078 | union perf_event *event; |
06aae590 | 1079 | uint32_t size; |
0331ee0c | 1080 | |
45694aa7 | 1081 | perf_tool__fill_defaults(tool); |
06aae590 | 1082 | |
1b75962e | 1083 | page_size = sysconf(_SC_PAGESIZE); |
06aae590 | 1084 | |
0331ee0c TG |
1085 | page_offset = page_size * (data_offset / page_size); |
1086 | file_offset = page_offset; | |
1087 | head = data_offset - page_offset; | |
06aae590 | 1088 | |
d6513281 TG |
1089 | if (data_offset + data_size < file_size) |
1090 | file_size = data_offset + data_size; | |
1091 | ||
55b44629 | 1092 | progress_next = file_size / 16; |
55b44629 TG |
1093 | |
1094 | mmap_size = session->mmap_window; | |
1095 | if (mmap_size > file_size) | |
1096 | mmap_size = file_size; | |
1097 | ||
fe174207 TG |
1098 | memset(mmaps, 0, sizeof(mmaps)); |
1099 | ||
ba21594c ACM |
1100 | mmap_prot = PROT_READ; |
1101 | mmap_flags = MAP_SHARED; | |
1102 | ||
0331ee0c | 1103 | if (session->header.needs_swap) { |
ba21594c ACM |
1104 | mmap_prot |= PROT_WRITE; |
1105 | mmap_flags = MAP_PRIVATE; | |
1106 | } | |
06aae590 | 1107 | remap: |
55b44629 TG |
1108 | buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd, |
1109 | file_offset); | |
06aae590 ACM |
1110 | if (buf == MAP_FAILED) { |
1111 | pr_err("failed to mmap file\n"); | |
1112 | err = -errno; | |
1113 | goto out_err; | |
1114 | } | |
fe174207 TG |
1115 | mmaps[map_idx] = buf; |
1116 | map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); | |
d6513281 | 1117 | file_pos = file_offset + head; |
06aae590 ACM |
1118 | |
1119 | more: | |
998bedc8 FW |
1120 | event = fetch_mmaped_event(session, head, mmap_size, buf); |
1121 | if (!event) { | |
fe174207 TG |
1122 | if (mmaps[map_idx]) { |
1123 | munmap(mmaps[map_idx], mmap_size); | |
1124 | mmaps[map_idx] = NULL; | |
1125 | } | |
06aae590 | 1126 | |
0331ee0c TG |
1127 | page_offset = page_size * (head / page_size); |
1128 | file_offset += page_offset; | |
1129 | head -= page_offset; | |
06aae590 ACM |
1130 | goto remap; |
1131 | } | |
1132 | ||
1133 | size = event->header.size; | |
1134 | ||
d6513281 | 1135 | if (size == 0 || |
45694aa7 | 1136 | perf_session__process_event(session, event, tool, file_pos) < 0) { |
9486aa38 | 1137 | dump_printf("%#" PRIx64 " [%#x]: skipping unknown header type: %d\n", |
0331ee0c | 1138 | file_offset + head, event->header.size, |
06aae590 ACM |
1139 | event->header.type); |
1140 | /* | |
1141 | * assume we lost track of the stream, check alignment, and | |
1142 | * increment a single u64 in the hope to catch on again 'soon'. | |
1143 | */ | |
1144 | if (unlikely(head & 7)) | |
1145 | head &= ~7ULL; | |
1146 | ||
1147 | size = 8; | |
1148 | } | |
1149 | ||
1150 | head += size; | |
d6513281 | 1151 | file_pos += size; |
06aae590 | 1152 | |
55b44629 TG |
1153 | if (file_pos >= progress_next) { |
1154 | progress_next += file_size / 16; | |
ca59bcbc ACM |
1155 | ui_progress__update(file_pos, file_size, |
1156 | "Processing events..."); | |
55b44629 TG |
1157 | } |
1158 | ||
d6513281 | 1159 | if (file_pos < file_size) |
06aae590 | 1160 | goto more; |
d6513281 | 1161 | |
06aae590 | 1162 | err = 0; |
c61e52ee | 1163 | /* do the final flush for ordered samples */ |
0331ee0c | 1164 | session->ordered_samples.next_flush = ULLONG_MAX; |
45694aa7 | 1165 | flush_sample_queue(session, tool); |
06aae590 | 1166 | out_err: |
45694aa7 | 1167 | perf_session__warn_about_errors(session, tool); |
020bb75a | 1168 | perf_session_free_sample_buffers(session); |
06aae590 ACM |
1169 | return err; |
1170 | } | |
27295592 | 1171 | |
6122e4e4 | 1172 | int perf_session__process_events(struct perf_session *self, |
45694aa7 | 1173 | struct perf_tool *tool) |
6122e4e4 ACM |
1174 | { |
1175 | int err; | |
1176 | ||
1177 | if (perf_session__register_idle_thread(self) == NULL) | |
1178 | return -ENOMEM; | |
1179 | ||
8dc58101 TZ |
1180 | if (!self->fd_pipe) |
1181 | err = __perf_session__process_events(self, | |
1182 | self->header.data_offset, | |
1183 | self->header.data_size, | |
45694aa7 | 1184 | self->size, tool); |
8dc58101 | 1185 | else |
45694aa7 | 1186 | err = __perf_session__process_pipe_events(self, tool); |
88ca895d | 1187 | |
6122e4e4 ACM |
1188 | return err; |
1189 | } | |
1190 | ||
d549c769 | 1191 | bool perf_session__has_traces(struct perf_session *self, const char *msg) |
27295592 ACM |
1192 | { |
1193 | if (!(self->sample_type & PERF_SAMPLE_RAW)) { | |
d549c769 ACM |
1194 | pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); |
1195 | return false; | |
27295592 ACM |
1196 | } |
1197 | ||
d549c769 | 1198 | return true; |
27295592 | 1199 | } |
56b03f3c | 1200 | |
743eb868 ACM |
1201 | int maps__set_kallsyms_ref_reloc_sym(struct map **maps, |
1202 | const char *symbol_name, u64 addr) | |
56b03f3c ACM |
1203 | { |
1204 | char *bracket; | |
9de89fe7 | 1205 | enum map_type i; |
a1645ce1 ZY |
1206 | struct ref_reloc_sym *ref; |
1207 | ||
1208 | ref = zalloc(sizeof(struct ref_reloc_sym)); | |
1209 | if (ref == NULL) | |
1210 | return -ENOMEM; | |
56b03f3c | 1211 | |
a1645ce1 ZY |
1212 | ref->name = strdup(symbol_name); |
1213 | if (ref->name == NULL) { | |
1214 | free(ref); | |
56b03f3c | 1215 | return -ENOMEM; |
a1645ce1 | 1216 | } |
56b03f3c | 1217 | |
a1645ce1 | 1218 | bracket = strchr(ref->name, ']'); |
56b03f3c ACM |
1219 | if (bracket) |
1220 | *bracket = '\0'; | |
1221 | ||
a1645ce1 | 1222 | ref->addr = addr; |
9de89fe7 ACM |
1223 | |
1224 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
a1645ce1 ZY |
1225 | struct kmap *kmap = map__kmap(maps[i]); |
1226 | kmap->ref_reloc_sym = ref; | |
9de89fe7 ACM |
1227 | } |
1228 | ||
56b03f3c ACM |
1229 | return 0; |
1230 | } | |
1f626bc3 ACM |
1231 | |
1232 | size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp) | |
1233 | { | |
1234 | return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) + | |
1235 | __dsos__fprintf(&self->host_machine.user_dsos, fp) + | |
1236 | machines__fprintf_dsos(&self->machines, fp); | |
1237 | } | |
f869097e ACM |
1238 | |
1239 | size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp, | |
1240 | bool with_hits) | |
1241 | { | |
1242 | size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits); | |
1243 | return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits); | |
1244 | } | |
e248de33 ACM |
1245 | |
1246 | size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) | |
1247 | { | |
1248 | struct perf_evsel *pos; | |
1249 | size_t ret = fprintf(fp, "Aggregated stats:\n"); | |
1250 | ||
1251 | ret += hists__fprintf_nr_events(&session->hists, fp); | |
1252 | ||
1253 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1254 | ret += fprintf(fp, "%s stats:\n", event_name(pos)); | |
1255 | ret += hists__fprintf_nr_events(&pos->hists, fp); | |
1256 | } | |
1257 | ||
1258 | return ret; | |
1259 | } | |
c0230b2b | 1260 | |
b424eba2 ACM |
1261 | size_t perf_session__fprintf(struct perf_session *session, FILE *fp) |
1262 | { | |
1263 | /* | |
1264 | * FIXME: Here we have to actually print all the machines in this | |
1265 | * session, not just the host... | |
1266 | */ | |
1267 | return machine__fprintf(&session->host_machine, fp); | |
1268 | } | |
1269 | ||
1270 | void perf_session__remove_thread(struct perf_session *session, | |
1271 | struct thread *th) | |
1272 | { | |
1273 | /* | |
1274 | * FIXME: This one makes no sense, we need to remove the thread from | |
1275 | * the machine it belongs to, perf_session can have many machines, so | |
1276 | * doing it always on ->host_machine is wrong. Fix when auditing all | |
1277 | * the 'perf kvm' code. | |
1278 | */ | |
1279 | machine__remove_thread(&session->host_machine, th); | |
1280 | } | |
1281 | ||
9cbdb702 DA |
1282 | struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, |
1283 | unsigned int type) | |
1284 | { | |
1285 | struct perf_evsel *pos; | |
1286 | ||
1287 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1288 | if (pos->attr.type == type) | |
1289 | return pos; | |
1290 | } | |
1291 | return NULL; | |
1292 | } | |
1293 | ||
743eb868 ACM |
1294 | void perf_event__print_ip(union perf_event *event, struct perf_sample *sample, |
1295 | struct machine *machine, struct perf_evsel *evsel, | |
a978f2ab | 1296 | int print_sym, int print_dso, int print_symoffset) |
c0230b2b DA |
1297 | { |
1298 | struct addr_location al; | |
246d4ce8 | 1299 | struct callchain_cursor *cursor = &evsel->hists.callchain_cursor; |
c0230b2b DA |
1300 | struct callchain_cursor_node *node; |
1301 | ||
743eb868 | 1302 | if (perf_event__preprocess_sample(event, machine, &al, sample, |
c0230b2b DA |
1303 | NULL) < 0) { |
1304 | error("problem processing %d event, skipping it.\n", | |
1305 | event->header.type); | |
1306 | return; | |
1307 | } | |
1308 | ||
1309 | if (symbol_conf.use_callchain && sample->callchain) { | |
1310 | ||
743eb868 | 1311 | if (machine__resolve_callchain(machine, evsel, al.thread, |
c0230b2b DA |
1312 | sample->callchain, NULL) != 0) { |
1313 | if (verbose) | |
1314 | error("Failed to resolve callchain. Skipping\n"); | |
1315 | return; | |
1316 | } | |
1317 | callchain_cursor_commit(cursor); | |
1318 | ||
1319 | while (1) { | |
1320 | node = callchain_cursor_current(cursor); | |
1321 | if (!node) | |
1322 | break; | |
1323 | ||
787bef17 DA |
1324 | printf("\t%16" PRIx64, node->ip); |
1325 | if (print_sym) { | |
547a92e0 AN |
1326 | printf(" "); |
1327 | symbol__fprintf_symname(node->sym, stdout); | |
610723f2 DA |
1328 | } |
1329 | if (print_dso) { | |
547a92e0 AN |
1330 | printf(" ("); |
1331 | map__fprintf_dsoname(al.map, stdout); | |
1332 | printf(")"); | |
787bef17 DA |
1333 | } |
1334 | printf("\n"); | |
c0230b2b DA |
1335 | |
1336 | callchain_cursor_advance(cursor); | |
1337 | } | |
1338 | ||
1339 | } else { | |
adc4bf99 | 1340 | printf("%16" PRIx64, sample->ip); |
787bef17 | 1341 | if (print_sym) { |
547a92e0 | 1342 | printf(" "); |
a978f2ab AN |
1343 | if (print_symoffset) |
1344 | symbol__fprintf_symname_offs(al.sym, &al, | |
1345 | stdout); | |
1346 | else | |
1347 | symbol__fprintf_symname(al.sym, stdout); | |
610723f2 DA |
1348 | } |
1349 | ||
1350 | if (print_dso) { | |
547a92e0 AN |
1351 | printf(" ("); |
1352 | map__fprintf_dsoname(al.map, stdout); | |
1353 | printf(")"); | |
787bef17 | 1354 | } |
c0230b2b DA |
1355 | } |
1356 | } | |
5d67be97 AB |
1357 | |
1358 | int perf_session__cpu_bitmap(struct perf_session *session, | |
1359 | const char *cpu_list, unsigned long *cpu_bitmap) | |
1360 | { | |
1361 | int i; | |
1362 | struct cpu_map *map; | |
1363 | ||
1364 | for (i = 0; i < PERF_TYPE_MAX; ++i) { | |
1365 | struct perf_evsel *evsel; | |
1366 | ||
1367 | evsel = perf_session__find_first_evtype(session, i); | |
1368 | if (!evsel) | |
1369 | continue; | |
1370 | ||
1371 | if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { | |
1372 | pr_err("File does not contain CPU events. " | |
1373 | "Remove -c option to proceed.\n"); | |
1374 | return -1; | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | map = cpu_map__new(cpu_list); | |
47fbe53b DA |
1379 | if (map == NULL) { |
1380 | pr_err("Invalid cpu_list\n"); | |
1381 | return -1; | |
1382 | } | |
5d67be97 AB |
1383 | |
1384 | for (i = 0; i < map->nr; i++) { | |
1385 | int cpu = map->map[i]; | |
1386 | ||
1387 | if (cpu >= MAX_NR_CPUS) { | |
1388 | pr_err("Requested CPU %d too large. " | |
1389 | "Consider raising MAX_NR_CPUS\n", cpu); | |
1390 | return -1; | |
1391 | } | |
1392 | ||
1393 | set_bit(cpu, cpu_bitmap); | |
1394 | } | |
1395 | ||
1396 | return 0; | |
1397 | } | |
fbe96f29 SE |
1398 | |
1399 | void perf_session__fprintf_info(struct perf_session *session, FILE *fp, | |
1400 | bool full) | |
1401 | { | |
1402 | struct stat st; | |
1403 | int ret; | |
1404 | ||
1405 | if (session == NULL || fp == NULL) | |
1406 | return; | |
1407 | ||
1408 | ret = fstat(session->fd, &st); | |
1409 | if (ret == -1) | |
1410 | return; | |
1411 | ||
1412 | fprintf(fp, "# ========\n"); | |
1413 | fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); | |
1414 | perf_header__fprintf_info(session, fp, full); | |
1415 | fprintf(fp, "# ========\n#\n"); | |
1416 | } |