Commit | Line | Data |
---|---|---|
94c744b6 | 1 | #include <linux/kernel.h> |
4e319027 | 2 | #include <traceevent/event-parse.h> |
94c744b6 | 3 | |
ba21594c | 4 | #include <byteswap.h> |
94c744b6 ACM |
5 | #include <unistd.h> |
6 | #include <sys/types.h> | |
a41794cd | 7 | #include <sys/mman.h> |
94c744b6 | 8 | |
e248de33 ACM |
9 | #include "evlist.h" |
10 | #include "evsel.h" | |
94c744b6 | 11 | #include "session.h" |
45694aa7 | 12 | #include "tool.h" |
a328626b | 13 | #include "sort.h" |
94c744b6 | 14 | #include "util.h" |
5d67be97 | 15 | #include "cpumap.h" |
0f6a3015 | 16 | #include "perf_regs.h" |
b0a45203 | 17 | #include "asm/bug.h" |
c446870d | 18 | #include "auxtrace.h" |
a5499b37 | 19 | #include "thread-stack.h" |
94c744b6 | 20 | |
c446870d AH |
21 | static int perf_session__deliver_event(struct perf_session *session, |
22 | union perf_event *event, | |
23 | struct perf_sample *sample, | |
24 | struct perf_tool *tool, | |
25 | u64 file_offset); | |
d10eb1eb | 26 | |
316c7136 | 27 | static int perf_session__open(struct perf_session *session) |
94c744b6 | 28 | { |
316c7136 | 29 | struct perf_data_file *file = session->file; |
8dc58101 | 30 | |
316c7136 | 31 | if (perf_session__read_header(session) < 0) { |
69996df4 | 32 | pr_err("incompatible file format (rerun with -v to learn more)"); |
6a4d98d7 | 33 | return -1; |
94c744b6 ACM |
34 | } |
35 | ||
cc9784bd JO |
36 | if (perf_data_file__is_pipe(file)) |
37 | return 0; | |
38 | ||
316c7136 | 39 | if (!perf_evlist__valid_sample_type(session->evlist)) { |
c2a70653 | 40 | pr_err("non matching sample_type"); |
6a4d98d7 | 41 | return -1; |
c2a70653 ACM |
42 | } |
43 | ||
316c7136 | 44 | if (!perf_evlist__valid_sample_id_all(session->evlist)) { |
c2a70653 | 45 | pr_err("non matching sample_id_all"); |
6a4d98d7 | 46 | return -1; |
c2a70653 ACM |
47 | } |
48 | ||
316c7136 | 49 | if (!perf_evlist__valid_read_format(session->evlist)) { |
9ede473c | 50 | pr_err("non matching read_format"); |
6a4d98d7 | 51 | return -1; |
9ede473c JO |
52 | } |
53 | ||
94c744b6 | 54 | return 0; |
94c744b6 ACM |
55 | } |
56 | ||
7b56cce2 | 57 | void perf_session__set_id_hdr_size(struct perf_session *session) |
9c90a61c | 58 | { |
7b56cce2 ACM |
59 | u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist); |
60 | ||
7b56cce2 | 61 | machines__set_id_hdr_size(&session->machines, id_hdr_size); |
9c90a61c ACM |
62 | } |
63 | ||
316c7136 | 64 | int perf_session__create_kernel_maps(struct perf_session *session) |
a1645ce1 | 65 | { |
316c7136 | 66 | int ret = machine__create_kernel_maps(&session->machines.host); |
a1645ce1 | 67 | |
a1645ce1 | 68 | if (ret >= 0) |
316c7136 | 69 | ret = machines__create_guest_kernel_maps(&session->machines); |
a1645ce1 ZY |
70 | return ret; |
71 | } | |
72 | ||
316c7136 | 73 | static void perf_session__destroy_kernel_maps(struct perf_session *session) |
076c6e45 | 74 | { |
316c7136 | 75 | machines__destroy_kernel_maps(&session->machines); |
076c6e45 ACM |
76 | } |
77 | ||
cfe1c414 AH |
78 | static bool perf_session__has_comm_exec(struct perf_session *session) |
79 | { | |
80 | struct perf_evsel *evsel; | |
81 | ||
82 | evlist__for_each(session->evlist, evsel) { | |
83 | if (evsel->attr.comm_exec) | |
84 | return true; | |
85 | } | |
86 | ||
87 | return false; | |
88 | } | |
89 | ||
90 | static void perf_session__set_comm_exec(struct perf_session *session) | |
91 | { | |
92 | bool comm_exec = perf_session__has_comm_exec(session); | |
93 | ||
94 | machines__set_comm_exec(&session->machines, comm_exec); | |
95 | } | |
96 | ||
d10eb1eb | 97 | static int ordered_events__deliver_event(struct ordered_events *oe, |
9870d780 | 98 | struct ordered_event *event) |
d10eb1eb | 99 | { |
9870d780 ACM |
100 | struct perf_sample sample; |
101 | struct perf_session *session = container_of(oe, struct perf_session, | |
102 | ordered_events); | |
103 | int ret = perf_evlist__parse_sample(session->evlist, event->event, &sample); | |
104 | ||
105 | if (ret) { | |
106 | pr_err("Can't parse sample, err = %d\n", ret); | |
107 | return ret; | |
108 | } | |
109 | ||
c446870d AH |
110 | return perf_session__deliver_event(session, event->event, &sample, |
111 | session->tool, event->file_offset); | |
d10eb1eb ACM |
112 | } |
113 | ||
f5fc1412 JO |
114 | struct perf_session *perf_session__new(struct perf_data_file *file, |
115 | bool repipe, struct perf_tool *tool) | |
94c744b6 | 116 | { |
316c7136 | 117 | struct perf_session *session = zalloc(sizeof(*session)); |
efad1415 | 118 | |
316c7136 | 119 | if (!session) |
94c744b6 ACM |
120 | goto out; |
121 | ||
316c7136 | 122 | session->repipe = repipe; |
9870d780 | 123 | session->tool = tool; |
99fa2984 | 124 | INIT_LIST_HEAD(&session->auxtrace_index); |
316c7136 | 125 | machines__init(&session->machines); |
9870d780 | 126 | ordered_events__init(&session->ordered_events, ordered_events__deliver_event); |
94c744b6 | 127 | |
6a4d98d7 JO |
128 | if (file) { |
129 | if (perf_data_file__open(file)) | |
64abebf7 | 130 | goto out_delete; |
6a4d98d7 | 131 | |
316c7136 | 132 | session->file = file; |
6a4d98d7 JO |
133 | |
134 | if (perf_data_file__is_read(file)) { | |
316c7136 | 135 | if (perf_session__open(session) < 0) |
6a4d98d7 JO |
136 | goto out_close; |
137 | ||
316c7136 | 138 | perf_session__set_id_hdr_size(session); |
cfe1c414 | 139 | perf_session__set_comm_exec(session); |
6a4d98d7 JO |
140 | } |
141 | } | |
142 | ||
143 | if (!file || perf_data_file__is_write(file)) { | |
64abebf7 ACM |
144 | /* |
145 | * In O_RDONLY mode this will be performed when reading the | |
8115d60c | 146 | * kernel MMAP event, in perf_event__process_mmap(). |
64abebf7 | 147 | */ |
316c7136 | 148 | if (perf_session__create_kernel_maps(session) < 0) |
a5c2a4c9 | 149 | pr_warning("Cannot read kernel map\n"); |
64abebf7 | 150 | } |
d549c769 | 151 | |
45694aa7 | 152 | if (tool && tool->ordering_requires_timestamps && |
0a8cb85c | 153 | tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) { |
21ef97f0 | 154 | dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); |
0a8cb85c | 155 | tool->ordered_events = false; |
d10eb1eb | 156 | } |
21ef97f0 | 157 | |
316c7136 | 158 | return session; |
6a4d98d7 JO |
159 | |
160 | out_close: | |
161 | perf_data_file__close(file); | |
162 | out_delete: | |
316c7136 | 163 | perf_session__delete(session); |
6a4d98d7 | 164 | out: |
4aa65636 | 165 | return NULL; |
94c744b6 ACM |
166 | } |
167 | ||
b424eba2 ACM |
168 | static void perf_session__delete_threads(struct perf_session *session) |
169 | { | |
876650e6 | 170 | machine__delete_threads(&session->machines.host); |
b424eba2 ACM |
171 | } |
172 | ||
ce80d3be | 173 | static void perf_session_env__exit(struct perf_env *env) |
03cd2094 | 174 | { |
74cf249d ACM |
175 | zfree(&env->hostname); |
176 | zfree(&env->os_release); | |
177 | zfree(&env->version); | |
178 | zfree(&env->arch); | |
179 | zfree(&env->cpu_desc); | |
180 | zfree(&env->cpuid); | |
181 | ||
182 | zfree(&env->cmdline); | |
768dd3f3 | 183 | zfree(&env->cmdline_argv); |
74cf249d ACM |
184 | zfree(&env->sibling_cores); |
185 | zfree(&env->sibling_threads); | |
186 | zfree(&env->numa_nodes); | |
187 | zfree(&env->pmu_mappings); | |
2bb00d2f | 188 | zfree(&env->cpu); |
03cd2094 NK |
189 | } |
190 | ||
316c7136 | 191 | void perf_session__delete(struct perf_session *session) |
94c744b6 | 192 | { |
c446870d | 193 | auxtrace__free(session); |
99fa2984 | 194 | auxtrace_index__free(&session->auxtrace_index); |
316c7136 | 195 | perf_session__destroy_kernel_maps(session); |
316c7136 | 196 | perf_session__delete_threads(session); |
4c7de49a | 197 | perf_session_env__exit(&session->header.env); |
316c7136 ACM |
198 | machines__exit(&session->machines); |
199 | if (session->file) | |
200 | perf_data_file__close(session->file); | |
201 | free(session); | |
94c744b6 | 202 | } |
a328626b | 203 | |
47c3d109 AH |
204 | static int process_event_synth_tracing_data_stub(struct perf_tool *tool |
205 | __maybe_unused, | |
206 | union perf_event *event | |
1d037ca1 IT |
207 | __maybe_unused, |
208 | struct perf_session *session | |
209 | __maybe_unused) | |
d20deb64 ACM |
210 | { |
211 | dump_printf(": unhandled!\n"); | |
212 | return 0; | |
213 | } | |
214 | ||
47c3d109 AH |
215 | static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused, |
216 | union perf_event *event __maybe_unused, | |
1d037ca1 IT |
217 | struct perf_evlist **pevlist |
218 | __maybe_unused) | |
10d0f086 ACM |
219 | { |
220 | dump_printf(": unhandled!\n"); | |
221 | return 0; | |
222 | } | |
223 | ||
1d037ca1 IT |
224 | static int process_event_sample_stub(struct perf_tool *tool __maybe_unused, |
225 | union perf_event *event __maybe_unused, | |
226 | struct perf_sample *sample __maybe_unused, | |
227 | struct perf_evsel *evsel __maybe_unused, | |
228 | struct machine *machine __maybe_unused) | |
9e69c210 ACM |
229 | { |
230 | dump_printf(": unhandled!\n"); | |
231 | return 0; | |
232 | } | |
233 | ||
1d037ca1 IT |
234 | static int process_event_stub(struct perf_tool *tool __maybe_unused, |
235 | union perf_event *event __maybe_unused, | |
236 | struct perf_sample *sample __maybe_unused, | |
237 | struct machine *machine __maybe_unused) | |
06aae590 ACM |
238 | { |
239 | dump_printf(": unhandled!\n"); | |
240 | return 0; | |
241 | } | |
242 | ||
d704ebda ACM |
243 | static int process_build_id_stub(struct perf_tool *tool __maybe_unused, |
244 | union perf_event *event __maybe_unused, | |
245 | struct perf_session *session __maybe_unused) | |
246 | { | |
247 | dump_printf(": unhandled!\n"); | |
248 | return 0; | |
249 | } | |
250 | ||
1d037ca1 IT |
251 | static int process_finished_round_stub(struct perf_tool *tool __maybe_unused, |
252 | union perf_event *event __maybe_unused, | |
d704ebda | 253 | struct ordered_events *oe __maybe_unused) |
743eb868 ACM |
254 | { |
255 | dump_printf(": unhandled!\n"); | |
256 | return 0; | |
257 | } | |
258 | ||
45694aa7 | 259 | static int process_finished_round(struct perf_tool *tool, |
d20deb64 | 260 | union perf_event *event, |
d704ebda | 261 | struct ordered_events *oe); |
d6b17beb | 262 | |
3c659eed AH |
263 | static int process_id_index_stub(struct perf_tool *tool __maybe_unused, |
264 | union perf_event *event __maybe_unused, | |
265 | struct perf_session *perf_session | |
266 | __maybe_unused) | |
267 | { | |
268 | dump_printf(": unhandled!\n"); | |
269 | return 0; | |
270 | } | |
271 | ||
a16ac023 AH |
272 | static int process_event_auxtrace_info_stub(struct perf_tool *tool __maybe_unused, |
273 | union perf_event *event __maybe_unused, | |
274 | struct perf_session *session __maybe_unused) | |
275 | { | |
276 | dump_printf(": unhandled!\n"); | |
277 | return 0; | |
278 | } | |
279 | ||
280 | static int skipn(int fd, off_t n) | |
281 | { | |
282 | char buf[4096]; | |
283 | ssize_t ret; | |
284 | ||
285 | while (n > 0) { | |
286 | ret = read(fd, buf, min(n, (off_t)sizeof(buf))); | |
287 | if (ret <= 0) | |
288 | return ret; | |
289 | n -= ret; | |
290 | } | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
295 | static s64 process_event_auxtrace_stub(struct perf_tool *tool __maybe_unused, | |
296 | union perf_event *event, | |
297 | struct perf_session *session | |
298 | __maybe_unused) | |
299 | { | |
300 | dump_printf(": unhandled!\n"); | |
301 | if (perf_data_file__is_pipe(session->file)) | |
302 | skipn(perf_data_file__fd(session->file), event->auxtrace.size); | |
303 | return event->auxtrace.size; | |
304 | } | |
305 | ||
e9bf54d2 AH |
306 | static |
307 | int process_event_auxtrace_error_stub(struct perf_tool *tool __maybe_unused, | |
308 | union perf_event *event __maybe_unused, | |
309 | struct perf_session *session __maybe_unused) | |
310 | { | |
311 | dump_printf(": unhandled!\n"); | |
312 | return 0; | |
313 | } | |
314 | ||
9c501402 | 315 | void perf_tool__fill_defaults(struct perf_tool *tool) |
06aae590 | 316 | { |
45694aa7 ACM |
317 | if (tool->sample == NULL) |
318 | tool->sample = process_event_sample_stub; | |
319 | if (tool->mmap == NULL) | |
320 | tool->mmap = process_event_stub; | |
6adb0b0a DA |
321 | if (tool->mmap2 == NULL) |
322 | tool->mmap2 = process_event_stub; | |
45694aa7 ACM |
323 | if (tool->comm == NULL) |
324 | tool->comm = process_event_stub; | |
325 | if (tool->fork == NULL) | |
326 | tool->fork = process_event_stub; | |
327 | if (tool->exit == NULL) | |
328 | tool->exit = process_event_stub; | |
329 | if (tool->lost == NULL) | |
330 | tool->lost = perf_event__process_lost; | |
c4937a91 KL |
331 | if (tool->lost_samples == NULL) |
332 | tool->lost_samples = perf_event__process_lost_samples; | |
4a96f7a0 AH |
333 | if (tool->aux == NULL) |
334 | tool->aux = perf_event__process_aux; | |
0ad21f68 AH |
335 | if (tool->itrace_start == NULL) |
336 | tool->itrace_start = perf_event__process_itrace_start; | |
0286039f AH |
337 | if (tool->context_switch == NULL) |
338 | tool->context_switch = perf_event__process_switch; | |
45694aa7 ACM |
339 | if (tool->read == NULL) |
340 | tool->read = process_event_sample_stub; | |
341 | if (tool->throttle == NULL) | |
342 | tool->throttle = process_event_stub; | |
343 | if (tool->unthrottle == NULL) | |
344 | tool->unthrottle = process_event_stub; | |
345 | if (tool->attr == NULL) | |
346 | tool->attr = process_event_synth_attr_stub; | |
45694aa7 ACM |
347 | if (tool->tracing_data == NULL) |
348 | tool->tracing_data = process_event_synth_tracing_data_stub; | |
349 | if (tool->build_id == NULL) | |
d704ebda | 350 | tool->build_id = process_build_id_stub; |
45694aa7 | 351 | if (tool->finished_round == NULL) { |
0a8cb85c | 352 | if (tool->ordered_events) |
45694aa7 | 353 | tool->finished_round = process_finished_round; |
d6b17beb | 354 | else |
45694aa7 | 355 | tool->finished_round = process_finished_round_stub; |
d6b17beb | 356 | } |
3c659eed AH |
357 | if (tool->id_index == NULL) |
358 | tool->id_index = process_id_index_stub; | |
a16ac023 AH |
359 | if (tool->auxtrace_info == NULL) |
360 | tool->auxtrace_info = process_event_auxtrace_info_stub; | |
361 | if (tool->auxtrace == NULL) | |
362 | tool->auxtrace = process_event_auxtrace_stub; | |
e9bf54d2 AH |
363 | if (tool->auxtrace_error == NULL) |
364 | tool->auxtrace_error = process_event_auxtrace_error_stub; | |
06aae590 | 365 | } |
48000a1a | 366 | |
268fb20f JO |
367 | static void swap_sample_id_all(union perf_event *event, void *data) |
368 | { | |
369 | void *end = (void *) event + event->header.size; | |
370 | int size = end - data; | |
371 | ||
372 | BUG_ON(size % sizeof(u64)); | |
373 | mem_bswap_64(data, size); | |
374 | } | |
375 | ||
376 | static void perf_event__all64_swap(union perf_event *event, | |
1d037ca1 | 377 | bool sample_id_all __maybe_unused) |
ba21594c | 378 | { |
8115d60c ACM |
379 | struct perf_event_header *hdr = &event->header; |
380 | mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); | |
ba21594c ACM |
381 | } |
382 | ||
268fb20f | 383 | static void perf_event__comm_swap(union perf_event *event, bool sample_id_all) |
ba21594c | 384 | { |
8115d60c ACM |
385 | event->comm.pid = bswap_32(event->comm.pid); |
386 | event->comm.tid = bswap_32(event->comm.tid); | |
268fb20f JO |
387 | |
388 | if (sample_id_all) { | |
389 | void *data = &event->comm.comm; | |
390 | ||
9ac3e487 | 391 | data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); |
268fb20f JO |
392 | swap_sample_id_all(event, data); |
393 | } | |
ba21594c ACM |
394 | } |
395 | ||
268fb20f JO |
396 | static void perf_event__mmap_swap(union perf_event *event, |
397 | bool sample_id_all) | |
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); | |
268fb20f JO |
404 | |
405 | if (sample_id_all) { | |
406 | void *data = &event->mmap.filename; | |
407 | ||
9ac3e487 | 408 | data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); |
268fb20f JO |
409 | swap_sample_id_all(event, data); |
410 | } | |
ba21594c ACM |
411 | } |
412 | ||
5c5e854b SE |
413 | static void perf_event__mmap2_swap(union perf_event *event, |
414 | bool sample_id_all) | |
415 | { | |
416 | event->mmap2.pid = bswap_32(event->mmap2.pid); | |
417 | event->mmap2.tid = bswap_32(event->mmap2.tid); | |
418 | event->mmap2.start = bswap_64(event->mmap2.start); | |
419 | event->mmap2.len = bswap_64(event->mmap2.len); | |
420 | event->mmap2.pgoff = bswap_64(event->mmap2.pgoff); | |
421 | event->mmap2.maj = bswap_32(event->mmap2.maj); | |
422 | event->mmap2.min = bswap_32(event->mmap2.min); | |
423 | event->mmap2.ino = bswap_64(event->mmap2.ino); | |
424 | ||
425 | if (sample_id_all) { | |
426 | void *data = &event->mmap2.filename; | |
427 | ||
428 | data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); | |
429 | swap_sample_id_all(event, data); | |
430 | } | |
431 | } | |
268fb20f | 432 | static void perf_event__task_swap(union perf_event *event, bool sample_id_all) |
ba21594c | 433 | { |
8115d60c ACM |
434 | event->fork.pid = bswap_32(event->fork.pid); |
435 | event->fork.tid = bswap_32(event->fork.tid); | |
436 | event->fork.ppid = bswap_32(event->fork.ppid); | |
437 | event->fork.ptid = bswap_32(event->fork.ptid); | |
438 | event->fork.time = bswap_64(event->fork.time); | |
268fb20f JO |
439 | |
440 | if (sample_id_all) | |
441 | swap_sample_id_all(event, &event->fork + 1); | |
ba21594c ACM |
442 | } |
443 | ||
268fb20f | 444 | static void perf_event__read_swap(union perf_event *event, bool sample_id_all) |
ba21594c | 445 | { |
8115d60c ACM |
446 | event->read.pid = bswap_32(event->read.pid); |
447 | event->read.tid = bswap_32(event->read.tid); | |
448 | event->read.value = bswap_64(event->read.value); | |
449 | event->read.time_enabled = bswap_64(event->read.time_enabled); | |
450 | event->read.time_running = bswap_64(event->read.time_running); | |
451 | event->read.id = bswap_64(event->read.id); | |
268fb20f JO |
452 | |
453 | if (sample_id_all) | |
454 | swap_sample_id_all(event, &event->read + 1); | |
ba21594c ACM |
455 | } |
456 | ||
4a96f7a0 AH |
457 | static void perf_event__aux_swap(union perf_event *event, bool sample_id_all) |
458 | { | |
459 | event->aux.aux_offset = bswap_64(event->aux.aux_offset); | |
460 | event->aux.aux_size = bswap_64(event->aux.aux_size); | |
461 | event->aux.flags = bswap_64(event->aux.flags); | |
462 | ||
463 | if (sample_id_all) | |
464 | swap_sample_id_all(event, &event->aux + 1); | |
465 | } | |
466 | ||
0ad21f68 AH |
467 | static void perf_event__itrace_start_swap(union perf_event *event, |
468 | bool sample_id_all) | |
469 | { | |
470 | event->itrace_start.pid = bswap_32(event->itrace_start.pid); | |
471 | event->itrace_start.tid = bswap_32(event->itrace_start.tid); | |
472 | ||
473 | if (sample_id_all) | |
474 | swap_sample_id_all(event, &event->itrace_start + 1); | |
475 | } | |
476 | ||
0286039f AH |
477 | static void perf_event__switch_swap(union perf_event *event, bool sample_id_all) |
478 | { | |
479 | if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) { | |
480 | event->context_switch.next_prev_pid = | |
481 | bswap_32(event->context_switch.next_prev_pid); | |
482 | event->context_switch.next_prev_tid = | |
483 | bswap_32(event->context_switch.next_prev_tid); | |
484 | } | |
485 | ||
486 | if (sample_id_all) | |
487 | swap_sample_id_all(event, &event->context_switch + 1); | |
488 | } | |
489 | ||
dd96c46b JO |
490 | static void perf_event__throttle_swap(union perf_event *event, |
491 | bool sample_id_all) | |
492 | { | |
493 | event->throttle.time = bswap_64(event->throttle.time); | |
494 | event->throttle.id = bswap_64(event->throttle.id); | |
495 | event->throttle.stream_id = bswap_64(event->throttle.stream_id); | |
496 | ||
497 | if (sample_id_all) | |
498 | swap_sample_id_all(event, &event->throttle + 1); | |
499 | } | |
500 | ||
e108c66e JO |
501 | static u8 revbyte(u8 b) |
502 | { | |
503 | int rev = (b >> 4) | ((b & 0xf) << 4); | |
504 | rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2); | |
505 | rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1); | |
506 | return (u8) rev; | |
507 | } | |
508 | ||
509 | /* | |
510 | * XXX this is hack in attempt to carry flags bitfield | |
511 | * throught endian village. ABI says: | |
512 | * | |
513 | * Bit-fields are allocated from right to left (least to most significant) | |
514 | * on little-endian implementations and from left to right (most to least | |
515 | * significant) on big-endian implementations. | |
516 | * | |
517 | * The above seems to be byte specific, so we need to reverse each | |
518 | * byte of the bitfield. 'Internet' also says this might be implementation | |
519 | * specific and we probably need proper fix and carry perf_event_attr | |
520 | * bitfield flags in separate data file FEAT_ section. Thought this seems | |
521 | * to work for now. | |
522 | */ | |
523 | static void swap_bitfield(u8 *p, unsigned len) | |
524 | { | |
525 | unsigned i; | |
526 | ||
527 | for (i = 0; i < len; i++) { | |
528 | *p = revbyte(*p); | |
529 | p++; | |
530 | } | |
531 | } | |
532 | ||
eda3913b DA |
533 | /* exported for swapping attributes in file header */ |
534 | void perf_event__attr_swap(struct perf_event_attr *attr) | |
535 | { | |
536 | attr->type = bswap_32(attr->type); | |
537 | attr->size = bswap_32(attr->size); | |
b30b6172 WN |
538 | |
539 | #define bswap_safe(f, n) \ | |
540 | (attr->size > (offsetof(struct perf_event_attr, f) + \ | |
541 | sizeof(attr->f) * (n))) | |
542 | #define bswap_field(f, sz) \ | |
543 | do { \ | |
544 | if (bswap_safe(f, 0)) \ | |
545 | attr->f = bswap_##sz(attr->f); \ | |
546 | } while(0) | |
547 | #define bswap_field_32(f) bswap_field(f, 32) | |
548 | #define bswap_field_64(f) bswap_field(f, 64) | |
549 | ||
550 | bswap_field_64(config); | |
551 | bswap_field_64(sample_period); | |
552 | bswap_field_64(sample_type); | |
553 | bswap_field_64(read_format); | |
554 | bswap_field_32(wakeup_events); | |
555 | bswap_field_32(bp_type); | |
556 | bswap_field_64(bp_addr); | |
557 | bswap_field_64(bp_len); | |
558 | bswap_field_64(branch_sample_type); | |
559 | bswap_field_64(sample_regs_user); | |
560 | bswap_field_32(sample_stack_user); | |
561 | bswap_field_32(aux_watermark); | |
562 | ||
563 | /* | |
564 | * After read_format are bitfields. Check read_format because | |
565 | * we are unable to use offsetof on bitfield. | |
566 | */ | |
567 | if (bswap_safe(read_format, 1)) | |
568 | swap_bitfield((u8 *) (&attr->read_format + 1), | |
569 | sizeof(u64)); | |
570 | #undef bswap_field_64 | |
571 | #undef bswap_field_32 | |
572 | #undef bswap_field | |
573 | #undef bswap_safe | |
eda3913b DA |
574 | } |
575 | ||
268fb20f | 576 | static void perf_event__hdr_attr_swap(union perf_event *event, |
1d037ca1 | 577 | bool sample_id_all __maybe_unused) |
2c46dbb5 TZ |
578 | { |
579 | size_t size; | |
580 | ||
eda3913b | 581 | perf_event__attr_swap(&event->attr.attr); |
2c46dbb5 | 582 | |
8115d60c ACM |
583 | size = event->header.size; |
584 | size -= (void *)&event->attr.id - (void *)event; | |
585 | mem_bswap_64(event->attr.id, size); | |
2c46dbb5 TZ |
586 | } |
587 | ||
268fb20f | 588 | static void perf_event__event_type_swap(union perf_event *event, |
1d037ca1 | 589 | bool sample_id_all __maybe_unused) |
cd19a035 | 590 | { |
8115d60c ACM |
591 | event->event_type.event_type.event_id = |
592 | bswap_64(event->event_type.event_type.event_id); | |
cd19a035 TZ |
593 | } |
594 | ||
268fb20f | 595 | static void perf_event__tracing_data_swap(union perf_event *event, |
1d037ca1 | 596 | bool sample_id_all __maybe_unused) |
9215545e | 597 | { |
8115d60c | 598 | event->tracing_data.size = bswap_32(event->tracing_data.size); |
9215545e TZ |
599 | } |
600 | ||
a16ac023 AH |
601 | static void perf_event__auxtrace_info_swap(union perf_event *event, |
602 | bool sample_id_all __maybe_unused) | |
603 | { | |
604 | size_t size; | |
605 | ||
606 | event->auxtrace_info.type = bswap_32(event->auxtrace_info.type); | |
607 | ||
608 | size = event->header.size; | |
609 | size -= (void *)&event->auxtrace_info.priv - (void *)event; | |
610 | mem_bswap_64(event->auxtrace_info.priv, size); | |
611 | } | |
612 | ||
613 | static void perf_event__auxtrace_swap(union perf_event *event, | |
614 | bool sample_id_all __maybe_unused) | |
615 | { | |
616 | event->auxtrace.size = bswap_64(event->auxtrace.size); | |
617 | event->auxtrace.offset = bswap_64(event->auxtrace.offset); | |
618 | event->auxtrace.reference = bswap_64(event->auxtrace.reference); | |
619 | event->auxtrace.idx = bswap_32(event->auxtrace.idx); | |
620 | event->auxtrace.tid = bswap_32(event->auxtrace.tid); | |
621 | event->auxtrace.cpu = bswap_32(event->auxtrace.cpu); | |
622 | } | |
623 | ||
e9bf54d2 AH |
624 | static void perf_event__auxtrace_error_swap(union perf_event *event, |
625 | bool sample_id_all __maybe_unused) | |
626 | { | |
627 | event->auxtrace_error.type = bswap_32(event->auxtrace_error.type); | |
628 | event->auxtrace_error.code = bswap_32(event->auxtrace_error.code); | |
629 | event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu); | |
630 | event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid); | |
631 | event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid); | |
632 | event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip); | |
633 | } | |
634 | ||
268fb20f JO |
635 | typedef void (*perf_event__swap_op)(union perf_event *event, |
636 | bool sample_id_all); | |
ba21594c | 637 | |
8115d60c ACM |
638 | static perf_event__swap_op perf_event__swap_ops[] = { |
639 | [PERF_RECORD_MMAP] = perf_event__mmap_swap, | |
5c5e854b | 640 | [PERF_RECORD_MMAP2] = perf_event__mmap2_swap, |
8115d60c ACM |
641 | [PERF_RECORD_COMM] = perf_event__comm_swap, |
642 | [PERF_RECORD_FORK] = perf_event__task_swap, | |
643 | [PERF_RECORD_EXIT] = perf_event__task_swap, | |
644 | [PERF_RECORD_LOST] = perf_event__all64_swap, | |
645 | [PERF_RECORD_READ] = perf_event__read_swap, | |
dd96c46b JO |
646 | [PERF_RECORD_THROTTLE] = perf_event__throttle_swap, |
647 | [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap, | |
8115d60c | 648 | [PERF_RECORD_SAMPLE] = perf_event__all64_swap, |
4a96f7a0 | 649 | [PERF_RECORD_AUX] = perf_event__aux_swap, |
0ad21f68 | 650 | [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap, |
c4937a91 | 651 | [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap, |
0286039f AH |
652 | [PERF_RECORD_SWITCH] = perf_event__switch_swap, |
653 | [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap, | |
eda3913b | 654 | [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, |
8115d60c ACM |
655 | [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, |
656 | [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, | |
657 | [PERF_RECORD_HEADER_BUILD_ID] = NULL, | |
3c659eed | 658 | [PERF_RECORD_ID_INDEX] = perf_event__all64_swap, |
a16ac023 AH |
659 | [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap, |
660 | [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap, | |
e9bf54d2 | 661 | [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap, |
8115d60c | 662 | [PERF_RECORD_HEADER_MAX] = NULL, |
ba21594c ACM |
663 | }; |
664 | ||
d6b17beb FW |
665 | /* |
666 | * When perf record finishes a pass on every buffers, it records this pseudo | |
667 | * event. | |
668 | * We record the max timestamp t found in the pass n. | |
669 | * Assuming these timestamps are monotonic across cpus, we know that if | |
670 | * a buffer still has events with timestamps below t, they will be all | |
671 | * available and then read in the pass n + 1. | |
672 | * Hence when we start to read the pass n + 2, we can safely flush every | |
673 | * events with timestamps below t. | |
674 | * | |
675 | * ============ PASS n ================= | |
676 | * CPU 0 | CPU 1 | |
677 | * | | |
678 | * cnt1 timestamps | cnt2 timestamps | |
679 | * 1 | 2 | |
680 | * 2 | 3 | |
681 | * - | 4 <--- max recorded | |
682 | * | |
683 | * ============ PASS n + 1 ============== | |
684 | * CPU 0 | CPU 1 | |
685 | * | | |
686 | * cnt1 timestamps | cnt2 timestamps | |
687 | * 3 | 5 | |
688 | * 4 | 6 | |
689 | * 5 | 7 <---- max recorded | |
690 | * | |
691 | * Flush every events below timestamp 4 | |
692 | * | |
693 | * ============ PASS n + 2 ============== | |
694 | * CPU 0 | CPU 1 | |
695 | * | | |
696 | * cnt1 timestamps | cnt2 timestamps | |
697 | * 6 | 8 | |
698 | * 7 | 9 | |
699 | * - | 10 | |
700 | * | |
701 | * Flush every events below timestamp 7 | |
702 | * etc... | |
703 | */ | |
b7b61cbe | 704 | static int process_finished_round(struct perf_tool *tool __maybe_unused, |
1d037ca1 | 705 | union perf_event *event __maybe_unused, |
d704ebda | 706 | struct ordered_events *oe) |
d6b17beb | 707 | { |
5531e162 AH |
708 | if (dump_trace) |
709 | fprintf(stdout, "\n"); | |
b7b61cbe | 710 | return ordered_events__flush(oe, OE_FLUSH__ROUND); |
d6b17beb FW |
711 | } |
712 | ||
b7b61cbe ACM |
713 | int perf_session__queue_event(struct perf_session *s, union perf_event *event, |
714 | struct perf_sample *sample, u64 file_offset) | |
c61e52ee | 715 | { |
4a6b362f | 716 | return ordered_events__queue(&s->ordered_events, event, sample, file_offset); |
640c03ce | 717 | } |
c61e52ee | 718 | |
384b6055 | 719 | static void callchain__lbr_callstack_printf(struct perf_sample *sample) |
640c03ce | 720 | { |
384b6055 KL |
721 | struct ip_callchain *callchain = sample->callchain; |
722 | struct branch_stack *lbr_stack = sample->branch_stack; | |
723 | u64 kernel_callchain_nr = callchain->nr; | |
640c03ce | 724 | unsigned int i; |
c61e52ee | 725 | |
384b6055 KL |
726 | for (i = 0; i < kernel_callchain_nr; i++) { |
727 | if (callchain->ips[i] == PERF_CONTEXT_USER) | |
728 | break; | |
729 | } | |
730 | ||
731 | if ((i != kernel_callchain_nr) && lbr_stack->nr) { | |
732 | u64 total_nr; | |
733 | /* | |
734 | * LBR callstack can only get user call chain, | |
735 | * i is kernel call chain number, | |
736 | * 1 is PERF_CONTEXT_USER. | |
737 | * | |
738 | * The user call chain is stored in LBR registers. | |
739 | * LBR are pair registers. The caller is stored | |
740 | * in "from" register, while the callee is stored | |
741 | * in "to" register. | |
742 | * For example, there is a call stack | |
743 | * "A"->"B"->"C"->"D". | |
744 | * The LBR registers will recorde like | |
745 | * "C"->"D", "B"->"C", "A"->"B". | |
746 | * So only the first "to" register and all "from" | |
747 | * registers are needed to construct the whole stack. | |
748 | */ | |
749 | total_nr = i + 1 + lbr_stack->nr + 1; | |
750 | kernel_callchain_nr = i + 1; | |
751 | ||
752 | printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr); | |
753 | ||
754 | for (i = 0; i < kernel_callchain_nr; i++) | |
755 | printf("..... %2d: %016" PRIx64 "\n", | |
756 | i, callchain->ips[i]); | |
757 | ||
758 | printf("..... %2d: %016" PRIx64 "\n", | |
759 | (int)(kernel_callchain_nr), lbr_stack->entries[0].to); | |
760 | for (i = 0; i < lbr_stack->nr; i++) | |
761 | printf("..... %2d: %016" PRIx64 "\n", | |
762 | (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from); | |
763 | } | |
764 | } | |
765 | ||
766 | static void callchain__printf(struct perf_evsel *evsel, | |
767 | struct perf_sample *sample) | |
768 | { | |
769 | unsigned int i; | |
770 | struct ip_callchain *callchain = sample->callchain; | |
771 | ||
772 | if (has_branch_callstack(evsel)) | |
773 | callchain__lbr_callstack_printf(sample); | |
774 | ||
775 | printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr); | |
640c03ce | 776 | |
384b6055 | 777 | for (i = 0; i < callchain->nr; i++) |
9486aa38 | 778 | printf("..... %2d: %016" PRIx64 "\n", |
384b6055 | 779 | i, callchain->ips[i]); |
c61e52ee FW |
780 | } |
781 | ||
b5387528 RAV |
782 | static void branch_stack__printf(struct perf_sample *sample) |
783 | { | |
784 | uint64_t i; | |
785 | ||
786 | printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr); | |
787 | ||
0e332f03 AK |
788 | for (i = 0; i < sample->branch_stack->nr; i++) { |
789 | struct branch_entry *e = &sample->branch_stack->entries[i]; | |
790 | ||
791 | printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n", | |
792 | i, e->from, e->to, | |
793 | e->flags.cycles, | |
794 | e->flags.mispred ? "M" : " ", | |
795 | e->flags.predicted ? "P" : " ", | |
796 | e->flags.abort ? "A" : " ", | |
797 | e->flags.in_tx ? "T" : " ", | |
798 | (unsigned)e->flags.reserved); | |
799 | } | |
b5387528 RAV |
800 | } |
801 | ||
0f6a3015 JO |
802 | static void regs_dump__printf(u64 mask, u64 *regs) |
803 | { | |
804 | unsigned rid, i = 0; | |
805 | ||
806 | for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { | |
807 | u64 val = regs[i++]; | |
808 | ||
809 | printf(".... %-5s 0x%" PRIx64 "\n", | |
810 | perf_reg_name(rid), val); | |
811 | } | |
812 | } | |
813 | ||
6a21c0b5 SE |
814 | static const char *regs_abi[] = { |
815 | [PERF_SAMPLE_REGS_ABI_NONE] = "none", | |
816 | [PERF_SAMPLE_REGS_ABI_32] = "32-bit", | |
817 | [PERF_SAMPLE_REGS_ABI_64] = "64-bit", | |
818 | }; | |
819 | ||
820 | static inline const char *regs_dump_abi(struct regs_dump *d) | |
821 | { | |
822 | if (d->abi > PERF_SAMPLE_REGS_ABI_64) | |
823 | return "unknown"; | |
824 | ||
825 | return regs_abi[d->abi]; | |
826 | } | |
827 | ||
828 | static void regs__printf(const char *type, struct regs_dump *regs) | |
829 | { | |
830 | u64 mask = regs->mask; | |
831 | ||
832 | printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n", | |
833 | type, | |
834 | mask, | |
835 | regs_dump_abi(regs)); | |
836 | ||
837 | regs_dump__printf(mask, regs->regs); | |
838 | } | |
839 | ||
352ea45a | 840 | static void regs_user__printf(struct perf_sample *sample) |
0f6a3015 JO |
841 | { |
842 | struct regs_dump *user_regs = &sample->user_regs; | |
843 | ||
6a21c0b5 SE |
844 | if (user_regs->regs) |
845 | regs__printf("user", user_regs); | |
846 | } | |
847 | ||
848 | static void regs_intr__printf(struct perf_sample *sample) | |
849 | { | |
850 | struct regs_dump *intr_regs = &sample->intr_regs; | |
851 | ||
852 | if (intr_regs->regs) | |
853 | regs__printf("intr", intr_regs); | |
0f6a3015 JO |
854 | } |
855 | ||
856 | static void stack_user__printf(struct stack_dump *dump) | |
857 | { | |
858 | printf("... ustack: size %" PRIu64 ", offset 0x%x\n", | |
859 | dump->size, dump->offset); | |
860 | } | |
861 | ||
9fa8727a | 862 | static void perf_evlist__print_tstamp(struct perf_evlist *evlist, |
8115d60c | 863 | union perf_event *event, |
8d50e5b4 | 864 | struct perf_sample *sample) |
9c90a61c | 865 | { |
9fa8727a | 866 | u64 sample_type = __perf_evlist__combined_sample_type(evlist); |
7f3be652 | 867 | |
9c90a61c | 868 | if (event->header.type != PERF_RECORD_SAMPLE && |
9fa8727a | 869 | !perf_evlist__sample_id_all(evlist)) { |
9c90a61c ACM |
870 | fputs("-1 -1 ", stdout); |
871 | return; | |
872 | } | |
873 | ||
7f3be652 | 874 | if ((sample_type & PERF_SAMPLE_CPU)) |
9c90a61c ACM |
875 | printf("%u ", sample->cpu); |
876 | ||
7f3be652 | 877 | if (sample_type & PERF_SAMPLE_TIME) |
9486aa38 | 878 | printf("%" PRIu64 " ", sample->time); |
9c90a61c ACM |
879 | } |
880 | ||
9ede473c JO |
881 | static void sample_read__printf(struct perf_sample *sample, u64 read_format) |
882 | { | |
883 | printf("... sample_read:\n"); | |
884 | ||
885 | if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) | |
886 | printf("...... time enabled %016" PRIx64 "\n", | |
887 | sample->read.time_enabled); | |
888 | ||
889 | if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) | |
890 | printf("...... time running %016" PRIx64 "\n", | |
891 | sample->read.time_running); | |
892 | ||
893 | if (read_format & PERF_FORMAT_GROUP) { | |
894 | u64 i; | |
895 | ||
896 | printf(".... group nr %" PRIu64 "\n", sample->read.group.nr); | |
897 | ||
898 | for (i = 0; i < sample->read.group.nr; i++) { | |
899 | struct sample_read_value *value; | |
900 | ||
901 | value = &sample->read.group.values[i]; | |
902 | printf("..... id %016" PRIx64 | |
903 | ", value %016" PRIx64 "\n", | |
904 | value->id, value->value); | |
905 | } | |
906 | } else | |
907 | printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", | |
908 | sample->read.one.id, sample->read.one.value); | |
909 | } | |
910 | ||
9fa8727a | 911 | static void dump_event(struct perf_evlist *evlist, union perf_event *event, |
8d50e5b4 | 912 | u64 file_offset, struct perf_sample *sample) |
9aefcab0 TG |
913 | { |
914 | if (!dump_trace) | |
915 | return; | |
916 | ||
9486aa38 ACM |
917 | printf("\n%#" PRIx64 " [%#x]: event: %d\n", |
918 | file_offset, event->header.size, event->header.type); | |
9aefcab0 TG |
919 | |
920 | trace_event(event); | |
921 | ||
922 | if (sample) | |
9fa8727a | 923 | perf_evlist__print_tstamp(evlist, event, sample); |
9aefcab0 | 924 | |
9486aa38 | 925 | printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, |
8115d60c | 926 | event->header.size, perf_event__name(event->header.type)); |
9aefcab0 TG |
927 | } |
928 | ||
0f6a3015 | 929 | static void dump_sample(struct perf_evsel *evsel, union perf_event *event, |
8d50e5b4 | 930 | struct perf_sample *sample) |
9aefcab0 | 931 | { |
7f3be652 ACM |
932 | u64 sample_type; |
933 | ||
ddbc24b7 ACM |
934 | if (!dump_trace) |
935 | return; | |
936 | ||
0ea590ae | 937 | printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", |
9486aa38 | 938 | event->header.misc, sample->pid, sample->tid, sample->ip, |
7cec0922 | 939 | sample->period, sample->addr); |
9aefcab0 | 940 | |
0f6a3015 | 941 | sample_type = evsel->attr.sample_type; |
7f3be652 ACM |
942 | |
943 | if (sample_type & PERF_SAMPLE_CALLCHAIN) | |
384b6055 | 944 | callchain__printf(evsel, sample); |
b5387528 | 945 | |
384b6055 | 946 | if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !has_branch_callstack(evsel)) |
b5387528 | 947 | branch_stack__printf(sample); |
0f6a3015 JO |
948 | |
949 | if (sample_type & PERF_SAMPLE_REGS_USER) | |
352ea45a | 950 | regs_user__printf(sample); |
0f6a3015 | 951 | |
6a21c0b5 SE |
952 | if (sample_type & PERF_SAMPLE_REGS_INTR) |
953 | regs_intr__printf(sample); | |
954 | ||
0f6a3015 JO |
955 | if (sample_type & PERF_SAMPLE_STACK_USER) |
956 | stack_user__printf(&sample->user_stack); | |
05484298 AK |
957 | |
958 | if (sample_type & PERF_SAMPLE_WEIGHT) | |
959 | printf("... weight: %" PRIu64 "\n", sample->weight); | |
98a3b32c SE |
960 | |
961 | if (sample_type & PERF_SAMPLE_DATA_SRC) | |
962 | printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); | |
9ede473c | 963 | |
475eeab9 AK |
964 | if (sample_type & PERF_SAMPLE_TRANSACTION) |
965 | printf("... transaction: %" PRIx64 "\n", sample->transaction); | |
966 | ||
9ede473c JO |
967 | if (sample_type & PERF_SAMPLE_READ) |
968 | sample_read__printf(sample, evsel->attr.read_format); | |
9aefcab0 TG |
969 | } |
970 | ||
54245fdc | 971 | static struct machine *machines__find_for_cpumode(struct machines *machines, |
ef89325f AH |
972 | union perf_event *event, |
973 | struct perf_sample *sample) | |
743eb868 ACM |
974 | { |
975 | const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
ad85ace0 | 976 | struct machine *machine; |
743eb868 | 977 | |
7c0f4a41 DA |
978 | if (perf_guest && |
979 | ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || | |
980 | (cpumode == PERF_RECORD_MISC_GUEST_USER))) { | |
7fb0a5ee ND |
981 | u32 pid; |
982 | ||
5c5e854b SE |
983 | if (event->header.type == PERF_RECORD_MMAP |
984 | || event->header.type == PERF_RECORD_MMAP2) | |
7fb0a5ee ND |
985 | pid = event->mmap.pid; |
986 | else | |
ef89325f | 987 | pid = sample->pid; |
7fb0a5ee | 988 | |
54245fdc | 989 | machine = machines__find(machines, pid); |
ad85ace0 | 990 | if (!machine) |
54245fdc | 991 | machine = machines__find(machines, DEFAULT_GUEST_KERNEL_ID); |
ad85ace0 | 992 | return machine; |
7fb0a5ee | 993 | } |
743eb868 | 994 | |
54245fdc | 995 | return &machines->host; |
743eb868 ACM |
996 | } |
997 | ||
313e53b0 | 998 | static int deliver_sample_value(struct perf_evlist *evlist, |
e4caec0d JO |
999 | struct perf_tool *tool, |
1000 | union perf_event *event, | |
1001 | struct perf_sample *sample, | |
1002 | struct sample_read_value *v, | |
1003 | struct machine *machine) | |
1004 | { | |
313e53b0 | 1005 | struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id); |
e4caec0d | 1006 | |
e4caec0d JO |
1007 | if (sid) { |
1008 | sample->id = v->id; | |
1009 | sample->period = v->value - sid->period; | |
1010 | sid->period = v->value; | |
1011 | } | |
1012 | ||
1013 | if (!sid || sid->evsel == NULL) { | |
313e53b0 | 1014 | ++evlist->stats.nr_unknown_id; |
e4caec0d JO |
1015 | return 0; |
1016 | } | |
1017 | ||
1018 | return tool->sample(tool, event, sample, sid->evsel, machine); | |
1019 | } | |
1020 | ||
313e53b0 | 1021 | static int deliver_sample_group(struct perf_evlist *evlist, |
e4caec0d JO |
1022 | struct perf_tool *tool, |
1023 | union perf_event *event, | |
1024 | struct perf_sample *sample, | |
1025 | struct machine *machine) | |
1026 | { | |
1027 | int ret = -EINVAL; | |
1028 | u64 i; | |
1029 | ||
1030 | for (i = 0; i < sample->read.group.nr; i++) { | |
313e53b0 | 1031 | ret = deliver_sample_value(evlist, tool, event, sample, |
e4caec0d JO |
1032 | &sample->read.group.values[i], |
1033 | machine); | |
1034 | if (ret) | |
1035 | break; | |
1036 | } | |
1037 | ||
1038 | return ret; | |
1039 | } | |
1040 | ||
1041 | static int | |
313e53b0 | 1042 | perf_evlist__deliver_sample(struct perf_evlist *evlist, |
e4caec0d JO |
1043 | struct perf_tool *tool, |
1044 | union perf_event *event, | |
1045 | struct perf_sample *sample, | |
1046 | struct perf_evsel *evsel, | |
1047 | struct machine *machine) | |
1048 | { | |
1049 | /* We know evsel != NULL. */ | |
1050 | u64 sample_type = evsel->attr.sample_type; | |
1051 | u64 read_format = evsel->attr.read_format; | |
1052 | ||
1053 | /* Standard sample delievery. */ | |
1054 | if (!(sample_type & PERF_SAMPLE_READ)) | |
1055 | return tool->sample(tool, event, sample, evsel, machine); | |
1056 | ||
1057 | /* For PERF_SAMPLE_READ we have either single or group mode. */ | |
1058 | if (read_format & PERF_FORMAT_GROUP) | |
313e53b0 | 1059 | return deliver_sample_group(evlist, tool, event, sample, |
e4caec0d JO |
1060 | machine); |
1061 | else | |
313e53b0 | 1062 | return deliver_sample_value(evlist, tool, event, sample, |
e4caec0d JO |
1063 | &sample->read.one, machine); |
1064 | } | |
1065 | ||
d10eb1eb ACM |
1066 | static int machines__deliver_event(struct machines *machines, |
1067 | struct perf_evlist *evlist, | |
1068 | union perf_event *event, | |
1069 | struct perf_sample *sample, | |
1070 | struct perf_tool *tool, u64 file_offset) | |
cbf41645 | 1071 | { |
9e69c210 | 1072 | struct perf_evsel *evsel; |
743eb868 | 1073 | struct machine *machine; |
9e69c210 | 1074 | |
9fa8727a | 1075 | dump_event(evlist, event, file_offset, sample); |
532e7269 | 1076 | |
313e53b0 | 1077 | evsel = perf_evlist__id2evsel(evlist, sample->id); |
7b27509f | 1078 | |
fa713a4e | 1079 | machine = machines__find_for_cpumode(machines, event, sample); |
743eb868 | 1080 | |
cbf41645 TG |
1081 | switch (event->header.type) { |
1082 | case PERF_RECORD_SAMPLE: | |
0f6a3015 | 1083 | dump_sample(evsel, event, sample); |
9e69c210 | 1084 | if (evsel == NULL) { |
313e53b0 | 1085 | ++evlist->stats.nr_unknown_id; |
6782206b | 1086 | return 0; |
9e69c210 | 1087 | } |
0c095715 | 1088 | if (machine == NULL) { |
313e53b0 | 1089 | ++evlist->stats.nr_unprocessable_samples; |
6782206b | 1090 | return 0; |
0c095715 | 1091 | } |
313e53b0 | 1092 | return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine); |
cbf41645 | 1093 | case PERF_RECORD_MMAP: |
45694aa7 | 1094 | return tool->mmap(tool, event, sample, machine); |
5c5e854b | 1095 | case PERF_RECORD_MMAP2: |
930e6fcd KL |
1096 | if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT) |
1097 | ++evlist->stats.nr_proc_map_timeout; | |
5c5e854b | 1098 | return tool->mmap2(tool, event, sample, machine); |
cbf41645 | 1099 | case PERF_RECORD_COMM: |
45694aa7 | 1100 | return tool->comm(tool, event, sample, machine); |
cbf41645 | 1101 | case PERF_RECORD_FORK: |
45694aa7 | 1102 | return tool->fork(tool, event, sample, machine); |
cbf41645 | 1103 | case PERF_RECORD_EXIT: |
45694aa7 | 1104 | return tool->exit(tool, event, sample, machine); |
cbf41645 | 1105 | case PERF_RECORD_LOST: |
45694aa7 | 1106 | if (tool->lost == perf_event__process_lost) |
313e53b0 | 1107 | evlist->stats.total_lost += event->lost.lost; |
45694aa7 | 1108 | return tool->lost(tool, event, sample, machine); |
c4937a91 KL |
1109 | case PERF_RECORD_LOST_SAMPLES: |
1110 | if (tool->lost_samples == perf_event__process_lost_samples) | |
1111 | evlist->stats.total_lost_samples += event->lost_samples.lost; | |
1112 | return tool->lost_samples(tool, event, sample, machine); | |
cbf41645 | 1113 | case PERF_RECORD_READ: |
45694aa7 | 1114 | return tool->read(tool, event, sample, evsel, machine); |
cbf41645 | 1115 | case PERF_RECORD_THROTTLE: |
45694aa7 | 1116 | return tool->throttle(tool, event, sample, machine); |
cbf41645 | 1117 | case PERF_RECORD_UNTHROTTLE: |
45694aa7 | 1118 | return tool->unthrottle(tool, event, sample, machine); |
4a96f7a0 AH |
1119 | case PERF_RECORD_AUX: |
1120 | return tool->aux(tool, event, sample, machine); | |
0ad21f68 AH |
1121 | case PERF_RECORD_ITRACE_START: |
1122 | return tool->itrace_start(tool, event, sample, machine); | |
0286039f AH |
1123 | case PERF_RECORD_SWITCH: |
1124 | case PERF_RECORD_SWITCH_CPU_WIDE: | |
1125 | return tool->context_switch(tool, event, sample, machine); | |
cbf41645 | 1126 | default: |
313e53b0 | 1127 | ++evlist->stats.nr_unknown_events; |
cbf41645 TG |
1128 | return -1; |
1129 | } | |
1130 | } | |
1131 | ||
c446870d AH |
1132 | static int perf_session__deliver_event(struct perf_session *session, |
1133 | union perf_event *event, | |
1134 | struct perf_sample *sample, | |
1135 | struct perf_tool *tool, | |
1136 | u64 file_offset) | |
1137 | { | |
1138 | int ret; | |
1139 | ||
1140 | ret = auxtrace__process_event(session, event, sample, tool); | |
1141 | if (ret < 0) | |
1142 | return ret; | |
1143 | if (ret > 0) | |
1144 | return 0; | |
1145 | ||
1146 | return machines__deliver_event(&session->machines, session->evlist, | |
1147 | event, sample, tool, file_offset); | |
1148 | } | |
1149 | ||
d5652d86 AH |
1150 | static s64 perf_session__process_user_event(struct perf_session *session, |
1151 | union perf_event *event, | |
d5652d86 | 1152 | u64 file_offset) |
06aae590 | 1153 | { |
d704ebda | 1154 | struct ordered_events *oe = &session->ordered_events; |
9870d780 | 1155 | struct perf_tool *tool = session->tool; |
cc9784bd | 1156 | int fd = perf_data_file__fd(session->file); |
10d0f086 ACM |
1157 | int err; |
1158 | ||
9fa8727a | 1159 | dump_event(session->evlist, event, file_offset, NULL); |
06aae590 | 1160 | |
cbf41645 | 1161 | /* These events are processed right away */ |
06aae590 | 1162 | switch (event->header.type) { |
2c46dbb5 | 1163 | case PERF_RECORD_HEADER_ATTR: |
47c3d109 | 1164 | err = tool->attr(tool, event, &session->evlist); |
cfe1c414 | 1165 | if (err == 0) { |
7b56cce2 | 1166 | perf_session__set_id_hdr_size(session); |
cfe1c414 AH |
1167 | perf_session__set_comm_exec(session); |
1168 | } | |
10d0f086 | 1169 | return err; |
f67697bd JO |
1170 | case PERF_RECORD_HEADER_EVENT_TYPE: |
1171 | /* | |
1172 | * Depreceated, but we need to handle it for sake | |
1173 | * of old data files create in pipe mode. | |
1174 | */ | |
1175 | return 0; | |
9215545e TZ |
1176 | case PERF_RECORD_HEADER_TRACING_DATA: |
1177 | /* setup for reading amidst mmap */ | |
cc9784bd | 1178 | lseek(fd, file_offset, SEEK_SET); |
47c3d109 | 1179 | return tool->tracing_data(tool, event, session); |
c7929e47 | 1180 | case PERF_RECORD_HEADER_BUILD_ID: |
45694aa7 | 1181 | return tool->build_id(tool, event, session); |
d6b17beb | 1182 | case PERF_RECORD_FINISHED_ROUND: |
d704ebda | 1183 | return tool->finished_round(tool, event, oe); |
3c659eed AH |
1184 | case PERF_RECORD_ID_INDEX: |
1185 | return tool->id_index(tool, event, session); | |
a16ac023 AH |
1186 | case PERF_RECORD_AUXTRACE_INFO: |
1187 | return tool->auxtrace_info(tool, event, session); | |
1188 | case PERF_RECORD_AUXTRACE: | |
1189 | /* setup for reading amidst mmap */ | |
1190 | lseek(fd, file_offset + event->header.size, SEEK_SET); | |
1191 | return tool->auxtrace(tool, event, session); | |
e9bf54d2 | 1192 | case PERF_RECORD_AUXTRACE_ERROR: |
85ed4729 | 1193 | perf_session__auxtrace_error_inc(session, event); |
e9bf54d2 | 1194 | return tool->auxtrace_error(tool, event, session); |
06aae590 | 1195 | default: |
ba74f064 | 1196 | return -EINVAL; |
06aae590 | 1197 | } |
ba74f064 TG |
1198 | } |
1199 | ||
a293829d AH |
1200 | int perf_session__deliver_synth_event(struct perf_session *session, |
1201 | union perf_event *event, | |
b7b61cbe | 1202 | struct perf_sample *sample) |
a293829d | 1203 | { |
fa713a4e | 1204 | struct perf_evlist *evlist = session->evlist; |
9870d780 | 1205 | struct perf_tool *tool = session->tool; |
fa713a4e ACM |
1206 | |
1207 | events_stats__inc(&evlist->stats, event->header.type); | |
a293829d AH |
1208 | |
1209 | if (event->header.type >= PERF_RECORD_USER_TYPE_START) | |
b7b61cbe | 1210 | return perf_session__process_user_event(session, event, 0); |
a293829d | 1211 | |
fa713a4e | 1212 | return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0); |
a293829d AH |
1213 | } |
1214 | ||
268fb20f JO |
1215 | static void event_swap(union perf_event *event, bool sample_id_all) |
1216 | { | |
1217 | perf_event__swap_op swap; | |
1218 | ||
1219 | swap = perf_event__swap_ops[event->header.type]; | |
1220 | if (swap) | |
1221 | swap(event, sample_id_all); | |
1222 | } | |
1223 | ||
5a52f33a AH |
1224 | int perf_session__peek_event(struct perf_session *session, off_t file_offset, |
1225 | void *buf, size_t buf_sz, | |
1226 | union perf_event **event_ptr, | |
1227 | struct perf_sample *sample) | |
1228 | { | |
1229 | union perf_event *event; | |
1230 | size_t hdr_sz, rest; | |
1231 | int fd; | |
1232 | ||
1233 | if (session->one_mmap && !session->header.needs_swap) { | |
1234 | event = file_offset - session->one_mmap_offset + | |
1235 | session->one_mmap_addr; | |
1236 | goto out_parse_sample; | |
1237 | } | |
1238 | ||
1239 | if (perf_data_file__is_pipe(session->file)) | |
1240 | return -1; | |
1241 | ||
1242 | fd = perf_data_file__fd(session->file); | |
1243 | hdr_sz = sizeof(struct perf_event_header); | |
1244 | ||
1245 | if (buf_sz < hdr_sz) | |
1246 | return -1; | |
1247 | ||
1248 | if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 || | |
554e92ed | 1249 | readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz) |
5a52f33a AH |
1250 | return -1; |
1251 | ||
1252 | event = (union perf_event *)buf; | |
1253 | ||
1254 | if (session->header.needs_swap) | |
1255 | perf_event_header__bswap(&event->header); | |
1256 | ||
554e92ed | 1257 | if (event->header.size < hdr_sz || event->header.size > buf_sz) |
5a52f33a AH |
1258 | return -1; |
1259 | ||
1260 | rest = event->header.size - hdr_sz; | |
1261 | ||
554e92ed | 1262 | if (readn(fd, buf, rest) != (ssize_t)rest) |
5a52f33a AH |
1263 | return -1; |
1264 | ||
1265 | if (session->header.needs_swap) | |
1266 | event_swap(event, perf_evlist__sample_id_all(session->evlist)); | |
1267 | ||
1268 | out_parse_sample: | |
1269 | ||
1270 | if (sample && event->header.type < PERF_RECORD_USER_TYPE_START && | |
1271 | perf_evlist__parse_sample(session->evlist, event, sample)) | |
1272 | return -1; | |
1273 | ||
1274 | *event_ptr = event; | |
1275 | ||
1276 | return 0; | |
1277 | } | |
1278 | ||
d5652d86 | 1279 | static s64 perf_session__process_event(struct perf_session *session, |
b7b61cbe | 1280 | union perf_event *event, u64 file_offset) |
ba74f064 | 1281 | { |
313e53b0 | 1282 | struct perf_evlist *evlist = session->evlist; |
9870d780 | 1283 | struct perf_tool *tool = session->tool; |
8d50e5b4 | 1284 | struct perf_sample sample; |
ba74f064 TG |
1285 | int ret; |
1286 | ||
268fb20f | 1287 | if (session->header.needs_swap) |
313e53b0 | 1288 | event_swap(event, perf_evlist__sample_id_all(evlist)); |
ba74f064 TG |
1289 | |
1290 | if (event->header.type >= PERF_RECORD_HEADER_MAX) | |
1291 | return -EINVAL; | |
1292 | ||
313e53b0 | 1293 | events_stats__inc(&evlist->stats, event->header.type); |
ba74f064 TG |
1294 | |
1295 | if (event->header.type >= PERF_RECORD_USER_TYPE_START) | |
b7b61cbe | 1296 | return perf_session__process_user_event(session, event, file_offset); |
cbf41645 | 1297 | |
3dfc2c0a TG |
1298 | /* |
1299 | * For all kernel events we get the sample data | |
1300 | */ | |
313e53b0 | 1301 | ret = perf_evlist__parse_sample(evlist, event, &sample); |
5538beca FW |
1302 | if (ret) |
1303 | return ret; | |
3dfc2c0a | 1304 | |
0a8cb85c | 1305 | if (tool->ordered_events) { |
b7b61cbe | 1306 | ret = perf_session__queue_event(session, event, &sample, file_offset); |
cbf41645 TG |
1307 | if (ret != -ETIME) |
1308 | return ret; | |
1309 | } | |
1310 | ||
c446870d AH |
1311 | return perf_session__deliver_event(session, event, &sample, tool, |
1312 | file_offset); | |
06aae590 ACM |
1313 | } |
1314 | ||
316c7136 | 1315 | void perf_event_header__bswap(struct perf_event_header *hdr) |
ba21594c | 1316 | { |
316c7136 ACM |
1317 | hdr->type = bswap_32(hdr->type); |
1318 | hdr->misc = bswap_16(hdr->misc); | |
1319 | hdr->size = bswap_16(hdr->size); | |
ba21594c ACM |
1320 | } |
1321 | ||
b424eba2 ACM |
1322 | struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) |
1323 | { | |
1fcb8768 | 1324 | return machine__findnew_thread(&session->machines.host, -1, pid); |
b424eba2 ACM |
1325 | } |
1326 | ||
316c7136 | 1327 | static struct thread *perf_session__register_idle_thread(struct perf_session *session) |
06aae590 | 1328 | { |
1fcb8768 | 1329 | struct thread *thread; |
06aae590 | 1330 | |
1fcb8768 | 1331 | thread = machine__findnew_thread(&session->machines.host, 0, 0); |
162f0bef | 1332 | if (thread == NULL || thread__set_comm(thread, "swapper", 0)) { |
06aae590 ACM |
1333 | pr_err("problem inserting idle task.\n"); |
1334 | thread = NULL; | |
1335 | } | |
1336 | ||
1337 | return thread; | |
1338 | } | |
1339 | ||
9870d780 | 1340 | static void perf_session__warn_about_errors(const struct perf_session *session) |
11095994 | 1341 | { |
9870d780 ACM |
1342 | const struct events_stats *stats = &session->evlist->stats; |
1343 | const struct ordered_events *oe = &session->ordered_events; | |
1344 | ||
1345 | if (session->tool->lost == perf_event__process_lost && | |
ccda068f | 1346 | stats->nr_events[PERF_RECORD_LOST] != 0) { |
7b27509f ACM |
1347 | ui__warning("Processed %d events and lost %d chunks!\n\n" |
1348 | "Check IO/CPU overload!\n\n", | |
ccda068f ACM |
1349 | stats->nr_events[0], |
1350 | stats->nr_events[PERF_RECORD_LOST]); | |
11095994 ACM |
1351 | } |
1352 | ||
c4937a91 KL |
1353 | if (session->tool->lost_samples == perf_event__process_lost_samples) { |
1354 | double drop_rate; | |
1355 | ||
1356 | drop_rate = (double)stats->total_lost_samples / | |
1357 | (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples); | |
1358 | if (drop_rate > 0.05) { | |
6ba29c2f | 1359 | ui__warning("Processed %" PRIu64 " samples and lost %3.2f%% samples!\n\n", |
c4937a91 KL |
1360 | stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples, |
1361 | drop_rate * 100.0); | |
1362 | } | |
1363 | } | |
1364 | ||
ccda068f | 1365 | if (stats->nr_unknown_events != 0) { |
11095994 ACM |
1366 | ui__warning("Found %u unknown events!\n\n" |
1367 | "Is this an older tool processing a perf.data " | |
1368 | "file generated by a more recent tool?\n\n" | |
1369 | "If that is not the case, consider " | |
1370 | "reporting to linux-kernel@vger.kernel.org.\n\n", | |
ccda068f | 1371 | stats->nr_unknown_events); |
11095994 ACM |
1372 | } |
1373 | ||
ccda068f | 1374 | if (stats->nr_unknown_id != 0) { |
9e69c210 | 1375 | ui__warning("%u samples with id not present in the header\n", |
ccda068f | 1376 | stats->nr_unknown_id); |
9e69c210 ACM |
1377 | } |
1378 | ||
ccda068f | 1379 | if (stats->nr_invalid_chains != 0) { |
75be989a ACM |
1380 | ui__warning("Found invalid callchains!\n\n" |
1381 | "%u out of %u events were discarded for this reason.\n\n" | |
1382 | "Consider reporting to linux-kernel@vger.kernel.org.\n\n", | |
ccda068f ACM |
1383 | stats->nr_invalid_chains, |
1384 | stats->nr_events[PERF_RECORD_SAMPLE]); | |
75be989a | 1385 | } |
0c095715 | 1386 | |
ccda068f | 1387 | if (stats->nr_unprocessable_samples != 0) { |
0c095715 JR |
1388 | ui__warning("%u unprocessable samples recorded.\n" |
1389 | "Do you have a KVM guest running and not using 'perf kvm'?\n", | |
ccda068f | 1390 | stats->nr_unprocessable_samples); |
0c095715 | 1391 | } |
f61ff6c0 | 1392 | |
9870d780 ACM |
1393 | if (oe->nr_unordered_events != 0) |
1394 | ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events); | |
85ed4729 AH |
1395 | |
1396 | events_stats__auxtrace_error_warn(stats); | |
930e6fcd KL |
1397 | |
1398 | if (stats->nr_proc_map_timeout != 0) { | |
1399 | ui__warning("%d map information files for pre-existing threads were\n" | |
1400 | "not processed, if there are samples for addresses they\n" | |
1401 | "will not be resolved, you may find out which are these\n" | |
1402 | "threads by running with -v and redirecting the output\n" | |
9d9cad76 KL |
1403 | "to a file.\n" |
1404 | "The time limit to process proc map is too short?\n" | |
1405 | "Increase it by --proc-map-timeout\n", | |
930e6fcd KL |
1406 | stats->nr_proc_map_timeout); |
1407 | } | |
11095994 ACM |
1408 | } |
1409 | ||
a5499b37 AH |
1410 | static int perf_session__flush_thread_stack(struct thread *thread, |
1411 | void *p __maybe_unused) | |
1412 | { | |
1413 | return thread_stack__flush(thread); | |
1414 | } | |
1415 | ||
1416 | static int perf_session__flush_thread_stacks(struct perf_session *session) | |
1417 | { | |
1418 | return machines__for_each_thread(&session->machines, | |
1419 | perf_session__flush_thread_stack, | |
1420 | NULL); | |
1421 | } | |
1422 | ||
8dc58101 TZ |
1423 | volatile int session_done; |
1424 | ||
b7b61cbe | 1425 | static int __perf_session__process_pipe_events(struct perf_session *session) |
8dc58101 | 1426 | { |
fa713a4e | 1427 | struct ordered_events *oe = &session->ordered_events; |
9870d780 | 1428 | struct perf_tool *tool = session->tool; |
316c7136 | 1429 | int fd = perf_data_file__fd(session->file); |
444d2866 SE |
1430 | union perf_event *event; |
1431 | uint32_t size, cur_size = 0; | |
1432 | void *buf = NULL; | |
d5652d86 | 1433 | s64 skip = 0; |
8dc58101 | 1434 | u64 head; |
727ebd54 | 1435 | ssize_t err; |
8dc58101 TZ |
1436 | void *p; |
1437 | ||
45694aa7 | 1438 | perf_tool__fill_defaults(tool); |
8dc58101 TZ |
1439 | |
1440 | head = 0; | |
444d2866 SE |
1441 | cur_size = sizeof(union perf_event); |
1442 | ||
1443 | buf = malloc(cur_size); | |
1444 | if (!buf) | |
1445 | return -errno; | |
8dc58101 | 1446 | more: |
444d2866 | 1447 | event = buf; |
cc9784bd | 1448 | err = readn(fd, event, sizeof(struct perf_event_header)); |
8dc58101 TZ |
1449 | if (err <= 0) { |
1450 | if (err == 0) | |
1451 | goto done; | |
1452 | ||
1453 | pr_err("failed to read event header\n"); | |
1454 | goto out_err; | |
1455 | } | |
1456 | ||
316c7136 | 1457 | if (session->header.needs_swap) |
444d2866 | 1458 | perf_event_header__bswap(&event->header); |
8dc58101 | 1459 | |
444d2866 | 1460 | size = event->header.size; |
27389d78 AH |
1461 | if (size < sizeof(struct perf_event_header)) { |
1462 | pr_err("bad event header size\n"); | |
1463 | goto out_err; | |
1464 | } | |
8dc58101 | 1465 | |
444d2866 SE |
1466 | if (size > cur_size) { |
1467 | void *new = realloc(buf, size); | |
1468 | if (!new) { | |
1469 | pr_err("failed to allocate memory to read event\n"); | |
1470 | goto out_err; | |
1471 | } | |
1472 | buf = new; | |
1473 | cur_size = size; | |
1474 | event = buf; | |
1475 | } | |
1476 | p = event; | |
8dc58101 TZ |
1477 | p += sizeof(struct perf_event_header); |
1478 | ||
794e43b5 | 1479 | if (size - sizeof(struct perf_event_header)) { |
cc9784bd | 1480 | err = readn(fd, p, size - sizeof(struct perf_event_header)); |
794e43b5 TZ |
1481 | if (err <= 0) { |
1482 | if (err == 0) { | |
1483 | pr_err("unexpected end of event stream\n"); | |
1484 | goto done; | |
1485 | } | |
8dc58101 | 1486 | |
794e43b5 TZ |
1487 | pr_err("failed to read event data\n"); |
1488 | goto out_err; | |
1489 | } | |
8dc58101 TZ |
1490 | } |
1491 | ||
b7b61cbe | 1492 | if ((skip = perf_session__process_event(session, event, head)) < 0) { |
9389a460 | 1493 | pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", |
444d2866 | 1494 | head, event->header.size, event->header.type); |
9389a460 JO |
1495 | err = -EINVAL; |
1496 | goto out_err; | |
8dc58101 TZ |
1497 | } |
1498 | ||
1499 | head += size; | |
1500 | ||
8dc58101 TZ |
1501 | if (skip > 0) |
1502 | head += skip; | |
1503 | ||
1504 | if (!session_done()) | |
1505 | goto more; | |
1506 | done: | |
8c16b649 | 1507 | /* do the final flush for ordered samples */ |
b7b61cbe | 1508 | err = ordered_events__flush(oe, OE_FLUSH__FINAL); |
c446870d AH |
1509 | if (err) |
1510 | goto out_err; | |
1511 | err = auxtrace__flush_events(session, tool); | |
a5499b37 AH |
1512 | if (err) |
1513 | goto out_err; | |
1514 | err = perf_session__flush_thread_stacks(session); | |
8dc58101 | 1515 | out_err: |
444d2866 | 1516 | free(buf); |
9870d780 | 1517 | perf_session__warn_about_errors(session); |
adc56ed1 | 1518 | ordered_events__free(&session->ordered_events); |
c446870d | 1519 | auxtrace__free_events(session); |
8dc58101 TZ |
1520 | return err; |
1521 | } | |
1522 | ||
998bedc8 FW |
1523 | static union perf_event * |
1524 | fetch_mmaped_event(struct perf_session *session, | |
1525 | u64 head, size_t mmap_size, char *buf) | |
1526 | { | |
1527 | union perf_event *event; | |
1528 | ||
1529 | /* | |
1530 | * Ensure we have enough space remaining to read | |
1531 | * the size of the event in the headers. | |
1532 | */ | |
1533 | if (head + sizeof(event->header) > mmap_size) | |
1534 | return NULL; | |
1535 | ||
1536 | event = (union perf_event *)(buf + head); | |
1537 | ||
1538 | if (session->header.needs_swap) | |
1539 | perf_event_header__bswap(&event->header); | |
1540 | ||
27389d78 AH |
1541 | if (head + event->header.size > mmap_size) { |
1542 | /* We're not fetching the event so swap back again */ | |
1543 | if (session->header.needs_swap) | |
1544 | perf_event_header__bswap(&event->header); | |
998bedc8 | 1545 | return NULL; |
27389d78 | 1546 | } |
998bedc8 FW |
1547 | |
1548 | return event; | |
1549 | } | |
1550 | ||
35d48ddf DM |
1551 | /* |
1552 | * On 64bit we can mmap the data file in one go. No need for tiny mmap | |
1553 | * slices. On 32bit we use 32MB. | |
1554 | */ | |
1555 | #if BITS_PER_LONG == 64 | |
1556 | #define MMAP_SIZE ULLONG_MAX | |
1557 | #define NUM_MMAPS 1 | |
1558 | #else | |
1559 | #define MMAP_SIZE (32 * 1024 * 1024ULL) | |
1560 | #define NUM_MMAPS 128 | |
1561 | #endif | |
1562 | ||
4ac30cf7 NK |
1563 | static int __perf_session__process_events(struct perf_session *session, |
1564 | u64 data_offset, u64 data_size, | |
b7b61cbe | 1565 | u64 file_size) |
06aae590 | 1566 | { |
fa713a4e | 1567 | struct ordered_events *oe = &session->ordered_events; |
9870d780 | 1568 | struct perf_tool *tool = session->tool; |
cc9784bd | 1569 | int fd = perf_data_file__fd(session->file); |
d5652d86 | 1570 | u64 head, page_offset, file_offset, file_pos, size; |
fe174207 | 1571 | int err, mmap_prot, mmap_flags, map_idx = 0; |
0c1fe6b2 | 1572 | size_t mmap_size; |
35d48ddf | 1573 | char *buf, *mmaps[NUM_MMAPS]; |
8115d60c | 1574 | union perf_event *event; |
4d3001fd | 1575 | struct ui_progress prog; |
d5652d86 | 1576 | s64 skip; |
0331ee0c | 1577 | |
45694aa7 | 1578 | perf_tool__fill_defaults(tool); |
06aae590 | 1579 | |
0331ee0c TG |
1580 | page_offset = page_size * (data_offset / page_size); |
1581 | file_offset = page_offset; | |
1582 | head = data_offset - page_offset; | |
06aae590 | 1583 | |
b314e5cf | 1584 | if (data_size && (data_offset + data_size < file_size)) |
d6513281 TG |
1585 | file_size = data_offset + data_size; |
1586 | ||
4d3001fd | 1587 | ui_progress__init(&prog, file_size, "Processing events..."); |
55b44629 | 1588 | |
35d48ddf | 1589 | mmap_size = MMAP_SIZE; |
919d86d3 | 1590 | if (mmap_size > file_size) { |
55b44629 | 1591 | mmap_size = file_size; |
919d86d3 AH |
1592 | session->one_mmap = true; |
1593 | } | |
55b44629 | 1594 | |
fe174207 TG |
1595 | memset(mmaps, 0, sizeof(mmaps)); |
1596 | ||
ba21594c ACM |
1597 | mmap_prot = PROT_READ; |
1598 | mmap_flags = MAP_SHARED; | |
1599 | ||
0331ee0c | 1600 | if (session->header.needs_swap) { |
ba21594c ACM |
1601 | mmap_prot |= PROT_WRITE; |
1602 | mmap_flags = MAP_PRIVATE; | |
1603 | } | |
06aae590 | 1604 | remap: |
cc9784bd | 1605 | buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd, |
55b44629 | 1606 | file_offset); |
06aae590 ACM |
1607 | if (buf == MAP_FAILED) { |
1608 | pr_err("failed to mmap file\n"); | |
1609 | err = -errno; | |
1610 | goto out_err; | |
1611 | } | |
fe174207 TG |
1612 | mmaps[map_idx] = buf; |
1613 | map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); | |
d6513281 | 1614 | file_pos = file_offset + head; |
919d86d3 AH |
1615 | if (session->one_mmap) { |
1616 | session->one_mmap_addr = buf; | |
1617 | session->one_mmap_offset = file_offset; | |
1618 | } | |
06aae590 ACM |
1619 | |
1620 | more: | |
998bedc8 FW |
1621 | event = fetch_mmaped_event(session, head, mmap_size, buf); |
1622 | if (!event) { | |
fe174207 TG |
1623 | if (mmaps[map_idx]) { |
1624 | munmap(mmaps[map_idx], mmap_size); | |
1625 | mmaps[map_idx] = NULL; | |
1626 | } | |
06aae590 | 1627 | |
0331ee0c TG |
1628 | page_offset = page_size * (head / page_size); |
1629 | file_offset += page_offset; | |
1630 | head -= page_offset; | |
06aae590 ACM |
1631 | goto remap; |
1632 | } | |
1633 | ||
1634 | size = event->header.size; | |
1635 | ||
27389d78 | 1636 | if (size < sizeof(struct perf_event_header) || |
b7b61cbe | 1637 | (skip = perf_session__process_event(session, event, file_pos)) < 0) { |
9389a460 JO |
1638 | pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", |
1639 | file_offset + head, event->header.size, | |
1640 | event->header.type); | |
1641 | err = -EINVAL; | |
1642 | goto out_err; | |
06aae590 ACM |
1643 | } |
1644 | ||
6f917c70 AH |
1645 | if (skip) |
1646 | size += skip; | |
1647 | ||
06aae590 | 1648 | head += size; |
d6513281 | 1649 | file_pos += size; |
06aae590 | 1650 | |
4d3001fd | 1651 | ui_progress__update(&prog, size); |
55b44629 | 1652 | |
33e940a2 | 1653 | if (session_done()) |
8c16b649 | 1654 | goto out; |
33e940a2 | 1655 | |
d6513281 | 1656 | if (file_pos < file_size) |
06aae590 | 1657 | goto more; |
d6513281 | 1658 | |
8c16b649 | 1659 | out: |
c61e52ee | 1660 | /* do the final flush for ordered samples */ |
b7b61cbe | 1661 | err = ordered_events__flush(oe, OE_FLUSH__FINAL); |
c446870d AH |
1662 | if (err) |
1663 | goto out_err; | |
1664 | err = auxtrace__flush_events(session, tool); | |
a5499b37 AH |
1665 | if (err) |
1666 | goto out_err; | |
1667 | err = perf_session__flush_thread_stacks(session); | |
06aae590 | 1668 | out_err: |
a5580f3e | 1669 | ui_progress__finish(); |
9870d780 | 1670 | perf_session__warn_about_errors(session); |
adc56ed1 | 1671 | ordered_events__free(&session->ordered_events); |
c446870d | 1672 | auxtrace__free_events(session); |
919d86d3 | 1673 | session->one_mmap = false; |
06aae590 ACM |
1674 | return err; |
1675 | } | |
27295592 | 1676 | |
b7b61cbe | 1677 | int perf_session__process_events(struct perf_session *session) |
6122e4e4 | 1678 | { |
316c7136 | 1679 | u64 size = perf_data_file__size(session->file); |
6122e4e4 ACM |
1680 | int err; |
1681 | ||
316c7136 | 1682 | if (perf_session__register_idle_thread(session) == NULL) |
6122e4e4 ACM |
1683 | return -ENOMEM; |
1684 | ||
316c7136 ACM |
1685 | if (!perf_data_file__is_pipe(session->file)) |
1686 | err = __perf_session__process_events(session, | |
1687 | session->header.data_offset, | |
b7b61cbe | 1688 | session->header.data_size, size); |
8dc58101 | 1689 | else |
b7b61cbe | 1690 | err = __perf_session__process_pipe_events(session); |
88ca895d | 1691 | |
6122e4e4 ACM |
1692 | return err; |
1693 | } | |
1694 | ||
7f3be652 | 1695 | bool perf_session__has_traces(struct perf_session *session, const char *msg) |
27295592 | 1696 | { |
93ea01c2 DA |
1697 | struct perf_evsel *evsel; |
1698 | ||
0050f7aa | 1699 | evlist__for_each(session->evlist, evsel) { |
93ea01c2 DA |
1700 | if (evsel->attr.type == PERF_TYPE_TRACEPOINT) |
1701 | return true; | |
27295592 ACM |
1702 | } |
1703 | ||
93ea01c2 DA |
1704 | pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); |
1705 | return false; | |
27295592 | 1706 | } |
56b03f3c | 1707 | |
743eb868 ACM |
1708 | int maps__set_kallsyms_ref_reloc_sym(struct map **maps, |
1709 | const char *symbol_name, u64 addr) | |
56b03f3c ACM |
1710 | { |
1711 | char *bracket; | |
9de89fe7 | 1712 | enum map_type i; |
a1645ce1 ZY |
1713 | struct ref_reloc_sym *ref; |
1714 | ||
1715 | ref = zalloc(sizeof(struct ref_reloc_sym)); | |
1716 | if (ref == NULL) | |
1717 | return -ENOMEM; | |
56b03f3c | 1718 | |
a1645ce1 ZY |
1719 | ref->name = strdup(symbol_name); |
1720 | if (ref->name == NULL) { | |
1721 | free(ref); | |
56b03f3c | 1722 | return -ENOMEM; |
a1645ce1 | 1723 | } |
56b03f3c | 1724 | |
a1645ce1 | 1725 | bracket = strchr(ref->name, ']'); |
56b03f3c ACM |
1726 | if (bracket) |
1727 | *bracket = '\0'; | |
1728 | ||
a1645ce1 | 1729 | ref->addr = addr; |
9de89fe7 ACM |
1730 | |
1731 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
a1645ce1 | 1732 | struct kmap *kmap = map__kmap(maps[i]); |
ba92732e WN |
1733 | |
1734 | if (!kmap) | |
1735 | continue; | |
a1645ce1 | 1736 | kmap->ref_reloc_sym = ref; |
9de89fe7 ACM |
1737 | } |
1738 | ||
56b03f3c ACM |
1739 | return 0; |
1740 | } | |
1f626bc3 | 1741 | |
316c7136 | 1742 | size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp) |
1f626bc3 | 1743 | { |
316c7136 | 1744 | return machines__fprintf_dsos(&session->machines, fp); |
1f626bc3 | 1745 | } |
f869097e | 1746 | |
316c7136 | 1747 | size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, |
417c2ff6 | 1748 | bool (skip)(struct dso *dso, int parm), int parm) |
f869097e | 1749 | { |
316c7136 | 1750 | return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm); |
f869097e | 1751 | } |
e248de33 ACM |
1752 | |
1753 | size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) | |
1754 | { | |
c446870d AH |
1755 | size_t ret; |
1756 | const char *msg = ""; | |
1757 | ||
1758 | if (perf_header__has_feat(&session->header, HEADER_AUXTRACE)) | |
1759 | msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)"; | |
1760 | ||
fe692ac8 | 1761 | ret = fprintf(fp, "\nAggregated stats:%s\n", msg); |
e248de33 | 1762 | |
75be989a | 1763 | ret += events_stats__fprintf(&session->evlist->stats, fp); |
e248de33 ACM |
1764 | return ret; |
1765 | } | |
c0230b2b | 1766 | |
b424eba2 ACM |
1767 | size_t perf_session__fprintf(struct perf_session *session, FILE *fp) |
1768 | { | |
1769 | /* | |
1770 | * FIXME: Here we have to actually print all the machines in this | |
1771 | * session, not just the host... | |
1772 | */ | |
876650e6 | 1773 | return machine__fprintf(&session->machines.host, fp); |
b424eba2 ACM |
1774 | } |
1775 | ||
9cbdb702 DA |
1776 | struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, |
1777 | unsigned int type) | |
1778 | { | |
1779 | struct perf_evsel *pos; | |
1780 | ||
0050f7aa | 1781 | evlist__for_each(session->evlist, pos) { |
9cbdb702 DA |
1782 | if (pos->attr.type == type) |
1783 | return pos; | |
1784 | } | |
1785 | return NULL; | |
1786 | } | |
1787 | ||
a2cb3cf2 | 1788 | void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample, |
cc22e575 | 1789 | struct addr_location *al, |
307cbb92 | 1790 | unsigned int print_opts, unsigned int stack_depth) |
c0230b2b | 1791 | { |
c0230b2b | 1792 | struct callchain_cursor_node *node; |
a6ffaf91 DA |
1793 | int print_ip = print_opts & PRINT_IP_OPT_IP; |
1794 | int print_sym = print_opts & PRINT_IP_OPT_SYM; | |
1795 | int print_dso = print_opts & PRINT_IP_OPT_DSO; | |
1796 | int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET; | |
b0b35f01 | 1797 | int print_oneline = print_opts & PRINT_IP_OPT_ONELINE; |
cc8fae1d | 1798 | int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE; |
b0b35f01 | 1799 | char s = print_oneline ? ' ' : '\t'; |
c0230b2b | 1800 | |
c0230b2b | 1801 | if (symbol_conf.use_callchain && sample->callchain) { |
a2cb3cf2 | 1802 | struct addr_location node_al; |
c0230b2b | 1803 | |
cc8b7c2b ACM |
1804 | if (thread__resolve_callchain(al->thread, evsel, |
1805 | sample, NULL, NULL, | |
1806 | PERF_MAX_STACK_DEPTH) != 0) { | |
c0230b2b DA |
1807 | if (verbose) |
1808 | error("Failed to resolve callchain. Skipping\n"); | |
1809 | return; | |
1810 | } | |
47260645 | 1811 | callchain_cursor_commit(&callchain_cursor); |
c0230b2b | 1812 | |
a2cb3cf2 AH |
1813 | if (print_symoffset) |
1814 | node_al = *al; | |
1815 | ||
307cbb92 | 1816 | while (stack_depth) { |
a4eb24a4 AH |
1817 | u64 addr = 0; |
1818 | ||
47260645 | 1819 | node = callchain_cursor_current(&callchain_cursor); |
c0230b2b DA |
1820 | if (!node) |
1821 | break; | |
1822 | ||
d2ff1b14 DA |
1823 | if (node->sym && node->sym->ignore) |
1824 | goto next; | |
1825 | ||
a6ffaf91 | 1826 | if (print_ip) |
b0b35f01 | 1827 | printf("%c%16" PRIx64, s, node->ip); |
a6ffaf91 | 1828 | |
a4eb24a4 AH |
1829 | if (node->map) |
1830 | addr = node->map->map_ip(node->map, node->ip); | |
1831 | ||
787bef17 | 1832 | if (print_sym) { |
547a92e0 | 1833 | printf(" "); |
251f426f | 1834 | if (print_symoffset) { |
a4eb24a4 | 1835 | node_al.addr = addr; |
a2cb3cf2 AH |
1836 | node_al.map = node->map; |
1837 | symbol__fprintf_symname_offs(node->sym, &node_al, stdout); | |
251f426f DA |
1838 | } else |
1839 | symbol__fprintf_symname(node->sym, stdout); | |
610723f2 | 1840 | } |
251f426f | 1841 | |
610723f2 | 1842 | if (print_dso) { |
547a92e0 | 1843 | printf(" ("); |
52deff71 | 1844 | map__fprintf_dsoname(node->map, stdout); |
547a92e0 | 1845 | printf(")"); |
787bef17 | 1846 | } |
b0b35f01 | 1847 | |
cc8fae1d AH |
1848 | if (print_srcline) |
1849 | map__fprintf_srcline(node->map, addr, "\n ", | |
1850 | stdout); | |
1851 | ||
b0b35f01 DA |
1852 | if (!print_oneline) |
1853 | printf("\n"); | |
c0230b2b | 1854 | |
307cbb92 | 1855 | stack_depth--; |
d2ff1b14 DA |
1856 | next: |
1857 | callchain_cursor_advance(&callchain_cursor); | |
c0230b2b DA |
1858 | } |
1859 | ||
1860 | } else { | |
a2cb3cf2 | 1861 | if (al->sym && al->sym->ignore) |
d2ff1b14 DA |
1862 | return; |
1863 | ||
a6ffaf91 DA |
1864 | if (print_ip) |
1865 | printf("%16" PRIx64, sample->ip); | |
1866 | ||
787bef17 | 1867 | if (print_sym) { |
547a92e0 | 1868 | printf(" "); |
a978f2ab | 1869 | if (print_symoffset) |
a2cb3cf2 | 1870 | symbol__fprintf_symname_offs(al->sym, al, |
a978f2ab AN |
1871 | stdout); |
1872 | else | |
a2cb3cf2 | 1873 | symbol__fprintf_symname(al->sym, stdout); |
610723f2 DA |
1874 | } |
1875 | ||
1876 | if (print_dso) { | |
547a92e0 | 1877 | printf(" ("); |
a2cb3cf2 | 1878 | map__fprintf_dsoname(al->map, stdout); |
547a92e0 | 1879 | printf(")"); |
787bef17 | 1880 | } |
cc8fae1d AH |
1881 | |
1882 | if (print_srcline) | |
1883 | map__fprintf_srcline(al->map, al->addr, "\n ", stdout); | |
c0230b2b DA |
1884 | } |
1885 | } | |
5d67be97 AB |
1886 | |
1887 | int perf_session__cpu_bitmap(struct perf_session *session, | |
1888 | const char *cpu_list, unsigned long *cpu_bitmap) | |
1889 | { | |
8bac41cb | 1890 | int i, err = -1; |
5d67be97 AB |
1891 | struct cpu_map *map; |
1892 | ||
1893 | for (i = 0; i < PERF_TYPE_MAX; ++i) { | |
1894 | struct perf_evsel *evsel; | |
1895 | ||
1896 | evsel = perf_session__find_first_evtype(session, i); | |
1897 | if (!evsel) | |
1898 | continue; | |
1899 | ||
1900 | if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { | |
1901 | pr_err("File does not contain CPU events. " | |
1902 | "Remove -c option to proceed.\n"); | |
1903 | return -1; | |
1904 | } | |
1905 | } | |
1906 | ||
1907 | map = cpu_map__new(cpu_list); | |
47fbe53b DA |
1908 | if (map == NULL) { |
1909 | pr_err("Invalid cpu_list\n"); | |
1910 | return -1; | |
1911 | } | |
5d67be97 AB |
1912 | |
1913 | for (i = 0; i < map->nr; i++) { | |
1914 | int cpu = map->map[i]; | |
1915 | ||
1916 | if (cpu >= MAX_NR_CPUS) { | |
1917 | pr_err("Requested CPU %d too large. " | |
1918 | "Consider raising MAX_NR_CPUS\n", cpu); | |
8bac41cb | 1919 | goto out_delete_map; |
5d67be97 AB |
1920 | } |
1921 | ||
1922 | set_bit(cpu, cpu_bitmap); | |
1923 | } | |
1924 | ||
8bac41cb SF |
1925 | err = 0; |
1926 | ||
1927 | out_delete_map: | |
f30a79b0 | 1928 | cpu_map__put(map); |
8bac41cb | 1929 | return err; |
5d67be97 | 1930 | } |
fbe96f29 SE |
1931 | |
1932 | void perf_session__fprintf_info(struct perf_session *session, FILE *fp, | |
1933 | bool full) | |
1934 | { | |
1935 | struct stat st; | |
c5765ece | 1936 | int fd, ret; |
fbe96f29 SE |
1937 | |
1938 | if (session == NULL || fp == NULL) | |
1939 | return; | |
1940 | ||
c5765ece MI |
1941 | fd = perf_data_file__fd(session->file); |
1942 | ||
cc9784bd | 1943 | ret = fstat(fd, &st); |
fbe96f29 SE |
1944 | if (ret == -1) |
1945 | return; | |
1946 | ||
1947 | fprintf(fp, "# ========\n"); | |
1948 | fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); | |
1949 | perf_header__fprintf_info(session, fp, full); | |
1950 | fprintf(fp, "# ========\n#\n"); | |
1951 | } | |
da378962 ACM |
1952 | |
1953 | ||
1954 | int __perf_session__set_tracepoints_handlers(struct perf_session *session, | |
1955 | const struct perf_evsel_str_handler *assocs, | |
1956 | size_t nr_assocs) | |
1957 | { | |
da378962 | 1958 | struct perf_evsel *evsel; |
da378962 ACM |
1959 | size_t i; |
1960 | int err; | |
1961 | ||
1962 | for (i = 0; i < nr_assocs; i++) { | |
ccf53eac ACM |
1963 | /* |
1964 | * Adding a handler for an event not in the session, | |
1965 | * just ignore it. | |
1966 | */ | |
1967 | evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name); | |
da378962 | 1968 | if (evsel == NULL) |
ccf53eac | 1969 | continue; |
da378962 ACM |
1970 | |
1971 | err = -EEXIST; | |
744a9719 | 1972 | if (evsel->handler != NULL) |
ccf53eac | 1973 | goto out; |
744a9719 | 1974 | evsel->handler = assocs[i].handler; |
da378962 ACM |
1975 | } |
1976 | ||
1977 | err = 0; | |
1978 | out: | |
1979 | return err; | |
da378962 | 1980 | } |
3c659eed AH |
1981 | |
1982 | int perf_event__process_id_index(struct perf_tool *tool __maybe_unused, | |
1983 | union perf_event *event, | |
1984 | struct perf_session *session) | |
1985 | { | |
1986 | struct perf_evlist *evlist = session->evlist; | |
1987 | struct id_index_event *ie = &event->id_index; | |
1988 | size_t i, nr, max_nr; | |
1989 | ||
1990 | max_nr = (ie->header.size - sizeof(struct id_index_event)) / | |
1991 | sizeof(struct id_index_entry); | |
1992 | nr = ie->nr; | |
1993 | if (nr > max_nr) | |
1994 | return -EINVAL; | |
1995 | ||
1996 | if (dump_trace) | |
1997 | fprintf(stdout, " nr: %zu\n", nr); | |
1998 | ||
1999 | for (i = 0; i < nr; i++) { | |
2000 | struct id_index_entry *e = &ie->entries[i]; | |
2001 | struct perf_sample_id *sid; | |
2002 | ||
2003 | if (dump_trace) { | |
2004 | fprintf(stdout, " ... id: %"PRIu64, e->id); | |
2005 | fprintf(stdout, " idx: %"PRIu64, e->idx); | |
2006 | fprintf(stdout, " cpu: %"PRId64, e->cpu); | |
2007 | fprintf(stdout, " tid: %"PRId64"\n", e->tid); | |
2008 | } | |
2009 | ||
2010 | sid = perf_evlist__id2sid(evlist, e->id); | |
2011 | if (!sid) | |
2012 | return -ENOENT; | |
2013 | sid->idx = e->idx; | |
2014 | sid->cpu = e->cpu; | |
2015 | sid->tid = e->tid; | |
2016 | } | |
2017 | return 0; | |
2018 | } | |
2019 | ||
2020 | int perf_event__synthesize_id_index(struct perf_tool *tool, | |
2021 | perf_event__handler_t process, | |
2022 | struct perf_evlist *evlist, | |
2023 | struct machine *machine) | |
2024 | { | |
2025 | union perf_event *ev; | |
2026 | struct perf_evsel *evsel; | |
2027 | size_t nr = 0, i = 0, sz, max_nr, n; | |
2028 | int err; | |
2029 | ||
2030 | pr_debug2("Synthesizing id index\n"); | |
2031 | ||
2032 | max_nr = (UINT16_MAX - sizeof(struct id_index_event)) / | |
2033 | sizeof(struct id_index_entry); | |
2034 | ||
cba9b847 | 2035 | evlist__for_each(evlist, evsel) |
3c659eed AH |
2036 | nr += evsel->ids; |
2037 | ||
2038 | n = nr > max_nr ? max_nr : nr; | |
2039 | sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry); | |
2040 | ev = zalloc(sz); | |
2041 | if (!ev) | |
2042 | return -ENOMEM; | |
2043 | ||
2044 | ev->id_index.header.type = PERF_RECORD_ID_INDEX; | |
2045 | ev->id_index.header.size = sz; | |
2046 | ev->id_index.nr = n; | |
2047 | ||
cba9b847 | 2048 | evlist__for_each(evlist, evsel) { |
3c659eed AH |
2049 | u32 j; |
2050 | ||
2051 | for (j = 0; j < evsel->ids; j++) { | |
2052 | struct id_index_entry *e; | |
2053 | struct perf_sample_id *sid; | |
2054 | ||
2055 | if (i >= n) { | |
2056 | err = process(tool, ev, NULL, machine); | |
2057 | if (err) | |
2058 | goto out_err; | |
2059 | nr -= n; | |
2060 | i = 0; | |
2061 | } | |
2062 | ||
2063 | e = &ev->id_index.entries[i++]; | |
2064 | ||
2065 | e->id = evsel->id[j]; | |
2066 | ||
2067 | sid = perf_evlist__id2sid(evlist, e->id); | |
2068 | if (!sid) { | |
2069 | free(ev); | |
2070 | return -ENOENT; | |
2071 | } | |
2072 | ||
2073 | e->idx = sid->idx; | |
2074 | e->cpu = sid->cpu; | |
2075 | e->tid = sid->tid; | |
2076 | } | |
2077 | } | |
2078 | ||
2079 | sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry); | |
2080 | ev->id_index.header.size = sz; | |
2081 | ev->id_index.nr = nr; | |
2082 | ||
2083 | err = process(tool, ev, NULL, machine); | |
2084 | out_err: | |
2085 | free(ev); | |
2086 | ||
2087 | return err; | |
2088 | } |