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" |
7dbf4dcf | 17 | #include "vdso.h" |
94c744b6 ACM |
18 | |
19 | static int perf_session__open(struct perf_session *self, bool force) | |
20 | { | |
21 | struct stat input_stat; | |
22 | ||
8dc58101 TZ |
23 | if (!strcmp(self->filename, "-")) { |
24 | self->fd_pipe = true; | |
25 | self->fd = STDIN_FILENO; | |
26 | ||
a91e5431 | 27 | if (perf_session__read_header(self, self->fd) < 0) |
69996df4 | 28 | pr_err("incompatible file format (rerun with -v to learn more)"); |
8dc58101 TZ |
29 | |
30 | return 0; | |
31 | } | |
32 | ||
f887f301 | 33 | self->fd = open(self->filename, O_RDONLY); |
94c744b6 | 34 | if (self->fd < 0) { |
0f2c3de2 AI |
35 | int err = errno; |
36 | ||
37 | pr_err("failed to open %s: %s", self->filename, strerror(err)); | |
38 | if (err == ENOENT && !strcmp(self->filename, "perf.data")) | |
94c744b6 ACM |
39 | pr_err(" (try 'perf record' first)"); |
40 | pr_err("\n"); | |
41 | return -errno; | |
42 | } | |
43 | ||
44 | if (fstat(self->fd, &input_stat) < 0) | |
45 | goto out_close; | |
46 | ||
47 | if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) { | |
48 | pr_err("file %s not owned by current user or root\n", | |
49 | self->filename); | |
50 | goto out_close; | |
51 | } | |
52 | ||
53 | if (!input_stat.st_size) { | |
54 | pr_info("zero-sized file (%s), nothing to do!\n", | |
55 | self->filename); | |
56 | goto out_close; | |
57 | } | |
58 | ||
a91e5431 | 59 | if (perf_session__read_header(self, self->fd) < 0) { |
69996df4 | 60 | pr_err("incompatible file format (rerun with -v to learn more)"); |
94c744b6 ACM |
61 | goto out_close; |
62 | } | |
63 | ||
c2a70653 ACM |
64 | if (!perf_evlist__valid_sample_type(self->evlist)) { |
65 | pr_err("non matching sample_type"); | |
66 | goto out_close; | |
67 | } | |
68 | ||
69 | if (!perf_evlist__valid_sample_id_all(self->evlist)) { | |
70 | pr_err("non matching sample_id_all"); | |
71 | goto out_close; | |
72 | } | |
73 | ||
94c744b6 ACM |
74 | self->size = input_stat.st_size; |
75 | return 0; | |
76 | ||
77 | out_close: | |
78 | close(self->fd); | |
79 | self->fd = -1; | |
80 | return -1; | |
81 | } | |
82 | ||
7b56cce2 | 83 | void perf_session__set_id_hdr_size(struct perf_session *session) |
9c90a61c | 84 | { |
7b56cce2 ACM |
85 | u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist); |
86 | ||
7b56cce2 | 87 | machines__set_id_hdr_size(&session->machines, id_hdr_size); |
9c90a61c ACM |
88 | } |
89 | ||
a1645ce1 ZY |
90 | int perf_session__create_kernel_maps(struct perf_session *self) |
91 | { | |
876650e6 | 92 | int ret = machine__create_kernel_maps(&self->machines.host); |
a1645ce1 | 93 | |
a1645ce1 | 94 | if (ret >= 0) |
d118f8ba | 95 | ret = machines__create_guest_kernel_maps(&self->machines); |
a1645ce1 ZY |
96 | return ret; |
97 | } | |
98 | ||
076c6e45 ACM |
99 | static void perf_session__destroy_kernel_maps(struct perf_session *self) |
100 | { | |
876650e6 | 101 | machines__destroy_kernel_maps(&self->machines); |
076c6e45 ACM |
102 | } |
103 | ||
21ef97f0 IM |
104 | struct perf_session *perf_session__new(const char *filename, int mode, |
105 | bool force, bool repipe, | |
45694aa7 | 106 | struct perf_tool *tool) |
94c744b6 | 107 | { |
efad1415 RR |
108 | struct perf_session *self; |
109 | struct stat st; | |
110 | size_t len; | |
111 | ||
112 | if (!filename || !strlen(filename)) { | |
113 | if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) | |
114 | filename = "-"; | |
115 | else | |
116 | filename = "perf.data"; | |
117 | } | |
118 | ||
119 | len = strlen(filename); | |
120 | self = zalloc(sizeof(*self) + len); | |
94c744b6 ACM |
121 | |
122 | if (self == NULL) | |
123 | goto out; | |
124 | ||
94c744b6 | 125 | memcpy(self->filename, filename, len); |
454c407e | 126 | self->repipe = repipe; |
a1225dec | 127 | INIT_LIST_HEAD(&self->ordered_samples.samples); |
020bb75a | 128 | INIT_LIST_HEAD(&self->ordered_samples.sample_cache); |
5c891f38 | 129 | INIT_LIST_HEAD(&self->ordered_samples.to_free); |
876650e6 | 130 | machines__init(&self->machines); |
94c744b6 | 131 | |
64abebf7 ACM |
132 | if (mode == O_RDONLY) { |
133 | if (perf_session__open(self, force) < 0) | |
134 | goto out_delete; | |
7b56cce2 | 135 | perf_session__set_id_hdr_size(self); |
64abebf7 ACM |
136 | } else if (mode == O_WRONLY) { |
137 | /* | |
138 | * In O_RDONLY mode this will be performed when reading the | |
8115d60c | 139 | * kernel MMAP event, in perf_event__process_mmap(). |
64abebf7 ACM |
140 | */ |
141 | if (perf_session__create_kernel_maps(self) < 0) | |
142 | goto out_delete; | |
143 | } | |
d549c769 | 144 | |
45694aa7 | 145 | if (tool && tool->ordering_requires_timestamps && |
5e562474 | 146 | tool->ordered_samples && !perf_evlist__sample_id_all(self->evlist)) { |
21ef97f0 | 147 | dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n"); |
45694aa7 | 148 | tool->ordered_samples = false; |
21ef97f0 IM |
149 | } |
150 | ||
94c744b6 ACM |
151 | out: |
152 | return self; | |
4aa65636 ACM |
153 | out_delete: |
154 | perf_session__delete(self); | |
155 | return NULL; | |
94c744b6 ACM |
156 | } |
157 | ||
b424eba2 ACM |
158 | static void perf_session__delete_dead_threads(struct perf_session *session) |
159 | { | |
876650e6 | 160 | machine__delete_dead_threads(&session->machines.host); |
b424eba2 ACM |
161 | } |
162 | ||
b424eba2 ACM |
163 | static void perf_session__delete_threads(struct perf_session *session) |
164 | { | |
876650e6 | 165 | machine__delete_threads(&session->machines.host); |
b424eba2 ACM |
166 | } |
167 | ||
03cd2094 NK |
168 | static void perf_session_env__delete(struct perf_session_env *env) |
169 | { | |
170 | free(env->hostname); | |
171 | free(env->os_release); | |
172 | free(env->version); | |
173 | free(env->arch); | |
174 | free(env->cpu_desc); | |
175 | free(env->cpuid); | |
176 | ||
177 | free(env->cmdline); | |
178 | free(env->sibling_cores); | |
179 | free(env->sibling_threads); | |
180 | free(env->numa_nodes); | |
181 | free(env->pmu_mappings); | |
182 | } | |
183 | ||
94c744b6 ACM |
184 | void perf_session__delete(struct perf_session *self) |
185 | { | |
076c6e45 | 186 | perf_session__destroy_kernel_maps(self); |
d65a458b ACM |
187 | perf_session__delete_dead_threads(self); |
188 | perf_session__delete_threads(self); | |
03cd2094 | 189 | perf_session_env__delete(&self->header.env); |
876650e6 | 190 | machines__exit(&self->machines); |
94c744b6 ACM |
191 | close(self->fd); |
192 | free(self); | |
7dbf4dcf | 193 | vdso__exit(); |
94c744b6 | 194 | } |
a328626b | 195 | |
47c3d109 AH |
196 | static int process_event_synth_tracing_data_stub(struct perf_tool *tool |
197 | __maybe_unused, | |
198 | union perf_event *event | |
1d037ca1 IT |
199 | __maybe_unused, |
200 | struct perf_session *session | |
201 | __maybe_unused) | |
d20deb64 ACM |
202 | { |
203 | dump_printf(": unhandled!\n"); | |
204 | return 0; | |
205 | } | |
206 | ||
47c3d109 AH |
207 | static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused, |
208 | union perf_event *event __maybe_unused, | |
1d037ca1 IT |
209 | struct perf_evlist **pevlist |
210 | __maybe_unused) | |
10d0f086 ACM |
211 | { |
212 | dump_printf(": unhandled!\n"); | |
213 | return 0; | |
214 | } | |
215 | ||
1d037ca1 IT |
216 | static int process_event_sample_stub(struct perf_tool *tool __maybe_unused, |
217 | union perf_event *event __maybe_unused, | |
218 | struct perf_sample *sample __maybe_unused, | |
219 | struct perf_evsel *evsel __maybe_unused, | |
220 | struct machine *machine __maybe_unused) | |
9e69c210 ACM |
221 | { |
222 | dump_printf(": unhandled!\n"); | |
223 | return 0; | |
224 | } | |
225 | ||
1d037ca1 IT |
226 | static int process_event_stub(struct perf_tool *tool __maybe_unused, |
227 | union perf_event *event __maybe_unused, | |
228 | struct perf_sample *sample __maybe_unused, | |
229 | struct machine *machine __maybe_unused) | |
06aae590 ACM |
230 | { |
231 | dump_printf(": unhandled!\n"); | |
232 | return 0; | |
233 | } | |
234 | ||
1d037ca1 IT |
235 | static int process_finished_round_stub(struct perf_tool *tool __maybe_unused, |
236 | union perf_event *event __maybe_unused, | |
237 | struct perf_session *perf_session | |
238 | __maybe_unused) | |
743eb868 ACM |
239 | { |
240 | dump_printf(": unhandled!\n"); | |
241 | return 0; | |
242 | } | |
243 | ||
1d037ca1 IT |
244 | static int process_event_type_stub(struct perf_tool *tool __maybe_unused, |
245 | union perf_event *event __maybe_unused) | |
d6b17beb FW |
246 | { |
247 | dump_printf(": unhandled!\n"); | |
248 | return 0; | |
249 | } | |
250 | ||
45694aa7 | 251 | static int process_finished_round(struct perf_tool *tool, |
d20deb64 ACM |
252 | union perf_event *event, |
253 | struct perf_session *session); | |
d6b17beb | 254 | |
45694aa7 | 255 | static void perf_tool__fill_defaults(struct perf_tool *tool) |
06aae590 | 256 | { |
45694aa7 ACM |
257 | if (tool->sample == NULL) |
258 | tool->sample = process_event_sample_stub; | |
259 | if (tool->mmap == NULL) | |
260 | tool->mmap = process_event_stub; | |
261 | if (tool->comm == NULL) | |
262 | tool->comm = process_event_stub; | |
263 | if (tool->fork == NULL) | |
264 | tool->fork = process_event_stub; | |
265 | if (tool->exit == NULL) | |
266 | tool->exit = process_event_stub; | |
267 | if (tool->lost == NULL) | |
268 | tool->lost = perf_event__process_lost; | |
269 | if (tool->read == NULL) | |
270 | tool->read = process_event_sample_stub; | |
271 | if (tool->throttle == NULL) | |
272 | tool->throttle = process_event_stub; | |
273 | if (tool->unthrottle == NULL) | |
274 | tool->unthrottle = process_event_stub; | |
275 | if (tool->attr == NULL) | |
276 | tool->attr = process_event_synth_attr_stub; | |
277 | if (tool->event_type == NULL) | |
278 | tool->event_type = process_event_type_stub; | |
279 | if (tool->tracing_data == NULL) | |
280 | tool->tracing_data = process_event_synth_tracing_data_stub; | |
281 | if (tool->build_id == NULL) | |
282 | tool->build_id = process_finished_round_stub; | |
283 | if (tool->finished_round == NULL) { | |
284 | if (tool->ordered_samples) | |
285 | tool->finished_round = process_finished_round; | |
d6b17beb | 286 | else |
45694aa7 | 287 | tool->finished_round = process_finished_round_stub; |
d6b17beb | 288 | } |
06aae590 | 289 | } |
80c0120a DA |
290 | |
291 | void mem_bswap_32(void *src, int byte_size) | |
292 | { | |
293 | u32 *m = src; | |
294 | while (byte_size > 0) { | |
295 | *m = bswap_32(*m); | |
296 | byte_size -= sizeof(u32); | |
297 | ++m; | |
298 | } | |
299 | } | |
06aae590 | 300 | |
ba21594c ACM |
301 | void mem_bswap_64(void *src, int byte_size) |
302 | { | |
303 | u64 *m = src; | |
304 | ||
305 | while (byte_size > 0) { | |
306 | *m = bswap_64(*m); | |
307 | byte_size -= sizeof(u64); | |
308 | ++m; | |
309 | } | |
310 | } | |
311 | ||
268fb20f JO |
312 | static void swap_sample_id_all(union perf_event *event, void *data) |
313 | { | |
314 | void *end = (void *) event + event->header.size; | |
315 | int size = end - data; | |
316 | ||
317 | BUG_ON(size % sizeof(u64)); | |
318 | mem_bswap_64(data, size); | |
319 | } | |
320 | ||
321 | static void perf_event__all64_swap(union perf_event *event, | |
1d037ca1 | 322 | bool sample_id_all __maybe_unused) |
ba21594c | 323 | { |
8115d60c ACM |
324 | struct perf_event_header *hdr = &event->header; |
325 | mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr)); | |
ba21594c ACM |
326 | } |
327 | ||
268fb20f | 328 | static void perf_event__comm_swap(union perf_event *event, bool sample_id_all) |
ba21594c | 329 | { |
8115d60c ACM |
330 | event->comm.pid = bswap_32(event->comm.pid); |
331 | event->comm.tid = bswap_32(event->comm.tid); | |
268fb20f JO |
332 | |
333 | if (sample_id_all) { | |
334 | void *data = &event->comm.comm; | |
335 | ||
9ac3e487 | 336 | data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); |
268fb20f JO |
337 | swap_sample_id_all(event, data); |
338 | } | |
ba21594c ACM |
339 | } |
340 | ||
268fb20f JO |
341 | static void perf_event__mmap_swap(union perf_event *event, |
342 | bool sample_id_all) | |
ba21594c | 343 | { |
8115d60c ACM |
344 | event->mmap.pid = bswap_32(event->mmap.pid); |
345 | event->mmap.tid = bswap_32(event->mmap.tid); | |
346 | event->mmap.start = bswap_64(event->mmap.start); | |
347 | event->mmap.len = bswap_64(event->mmap.len); | |
348 | event->mmap.pgoff = bswap_64(event->mmap.pgoff); | |
268fb20f JO |
349 | |
350 | if (sample_id_all) { | |
351 | void *data = &event->mmap.filename; | |
352 | ||
9ac3e487 | 353 | data += PERF_ALIGN(strlen(data) + 1, sizeof(u64)); |
268fb20f JO |
354 | swap_sample_id_all(event, data); |
355 | } | |
ba21594c ACM |
356 | } |
357 | ||
268fb20f | 358 | static void perf_event__task_swap(union perf_event *event, bool sample_id_all) |
ba21594c | 359 | { |
8115d60c ACM |
360 | event->fork.pid = bswap_32(event->fork.pid); |
361 | event->fork.tid = bswap_32(event->fork.tid); | |
362 | event->fork.ppid = bswap_32(event->fork.ppid); | |
363 | event->fork.ptid = bswap_32(event->fork.ptid); | |
364 | event->fork.time = bswap_64(event->fork.time); | |
268fb20f JO |
365 | |
366 | if (sample_id_all) | |
367 | swap_sample_id_all(event, &event->fork + 1); | |
ba21594c ACM |
368 | } |
369 | ||
268fb20f | 370 | static void perf_event__read_swap(union perf_event *event, bool sample_id_all) |
ba21594c | 371 | { |
8115d60c ACM |
372 | event->read.pid = bswap_32(event->read.pid); |
373 | event->read.tid = bswap_32(event->read.tid); | |
374 | event->read.value = bswap_64(event->read.value); | |
375 | event->read.time_enabled = bswap_64(event->read.time_enabled); | |
376 | event->read.time_running = bswap_64(event->read.time_running); | |
377 | event->read.id = bswap_64(event->read.id); | |
268fb20f JO |
378 | |
379 | if (sample_id_all) | |
380 | swap_sample_id_all(event, &event->read + 1); | |
ba21594c ACM |
381 | } |
382 | ||
e108c66e JO |
383 | static u8 revbyte(u8 b) |
384 | { | |
385 | int rev = (b >> 4) | ((b & 0xf) << 4); | |
386 | rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2); | |
387 | rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1); | |
388 | return (u8) rev; | |
389 | } | |
390 | ||
391 | /* | |
392 | * XXX this is hack in attempt to carry flags bitfield | |
393 | * throught endian village. ABI says: | |
394 | * | |
395 | * Bit-fields are allocated from right to left (least to most significant) | |
396 | * on little-endian implementations and from left to right (most to least | |
397 | * significant) on big-endian implementations. | |
398 | * | |
399 | * The above seems to be byte specific, so we need to reverse each | |
400 | * byte of the bitfield. 'Internet' also says this might be implementation | |
401 | * specific and we probably need proper fix and carry perf_event_attr | |
402 | * bitfield flags in separate data file FEAT_ section. Thought this seems | |
403 | * to work for now. | |
404 | */ | |
405 | static void swap_bitfield(u8 *p, unsigned len) | |
406 | { | |
407 | unsigned i; | |
408 | ||
409 | for (i = 0; i < len; i++) { | |
410 | *p = revbyte(*p); | |
411 | p++; | |
412 | } | |
413 | } | |
414 | ||
eda3913b DA |
415 | /* exported for swapping attributes in file header */ |
416 | void perf_event__attr_swap(struct perf_event_attr *attr) | |
417 | { | |
418 | attr->type = bswap_32(attr->type); | |
419 | attr->size = bswap_32(attr->size); | |
420 | attr->config = bswap_64(attr->config); | |
421 | attr->sample_period = bswap_64(attr->sample_period); | |
422 | attr->sample_type = bswap_64(attr->sample_type); | |
423 | attr->read_format = bswap_64(attr->read_format); | |
424 | attr->wakeup_events = bswap_32(attr->wakeup_events); | |
425 | attr->bp_type = bswap_32(attr->bp_type); | |
426 | attr->bp_addr = bswap_64(attr->bp_addr); | |
427 | attr->bp_len = bswap_64(attr->bp_len); | |
e108c66e JO |
428 | |
429 | swap_bitfield((u8 *) (&attr->read_format + 1), sizeof(u64)); | |
eda3913b DA |
430 | } |
431 | ||
268fb20f | 432 | static void perf_event__hdr_attr_swap(union perf_event *event, |
1d037ca1 | 433 | bool sample_id_all __maybe_unused) |
2c46dbb5 TZ |
434 | { |
435 | size_t size; | |
436 | ||
eda3913b | 437 | perf_event__attr_swap(&event->attr.attr); |
2c46dbb5 | 438 | |
8115d60c ACM |
439 | size = event->header.size; |
440 | size -= (void *)&event->attr.id - (void *)event; | |
441 | mem_bswap_64(event->attr.id, size); | |
2c46dbb5 TZ |
442 | } |
443 | ||
268fb20f | 444 | static void perf_event__event_type_swap(union perf_event *event, |
1d037ca1 | 445 | bool sample_id_all __maybe_unused) |
cd19a035 | 446 | { |
8115d60c ACM |
447 | event->event_type.event_type.event_id = |
448 | bswap_64(event->event_type.event_type.event_id); | |
cd19a035 TZ |
449 | } |
450 | ||
268fb20f | 451 | static void perf_event__tracing_data_swap(union perf_event *event, |
1d037ca1 | 452 | bool sample_id_all __maybe_unused) |
9215545e | 453 | { |
8115d60c | 454 | event->tracing_data.size = bswap_32(event->tracing_data.size); |
9215545e TZ |
455 | } |
456 | ||
268fb20f JO |
457 | typedef void (*perf_event__swap_op)(union perf_event *event, |
458 | bool sample_id_all); | |
ba21594c | 459 | |
8115d60c ACM |
460 | static perf_event__swap_op perf_event__swap_ops[] = { |
461 | [PERF_RECORD_MMAP] = perf_event__mmap_swap, | |
462 | [PERF_RECORD_COMM] = perf_event__comm_swap, | |
463 | [PERF_RECORD_FORK] = perf_event__task_swap, | |
464 | [PERF_RECORD_EXIT] = perf_event__task_swap, | |
465 | [PERF_RECORD_LOST] = perf_event__all64_swap, | |
466 | [PERF_RECORD_READ] = perf_event__read_swap, | |
467 | [PERF_RECORD_SAMPLE] = perf_event__all64_swap, | |
eda3913b | 468 | [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap, |
8115d60c ACM |
469 | [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap, |
470 | [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap, | |
471 | [PERF_RECORD_HEADER_BUILD_ID] = NULL, | |
472 | [PERF_RECORD_HEADER_MAX] = NULL, | |
ba21594c ACM |
473 | }; |
474 | ||
c61e52ee FW |
475 | struct sample_queue { |
476 | u64 timestamp; | |
e4c2df13 | 477 | u64 file_offset; |
8115d60c | 478 | union perf_event *event; |
c61e52ee FW |
479 | struct list_head list; |
480 | }; | |
481 | ||
020bb75a TG |
482 | static void perf_session_free_sample_buffers(struct perf_session *session) |
483 | { | |
484 | struct ordered_samples *os = &session->ordered_samples; | |
485 | ||
5c891f38 | 486 | while (!list_empty(&os->to_free)) { |
020bb75a TG |
487 | struct sample_queue *sq; |
488 | ||
5c891f38 | 489 | sq = list_entry(os->to_free.next, struct sample_queue, list); |
020bb75a TG |
490 | list_del(&sq->list); |
491 | free(sq); | |
492 | } | |
493 | } | |
494 | ||
cbf41645 | 495 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 496 | union perf_event *event, |
8d50e5b4 | 497 | struct perf_sample *sample, |
45694aa7 | 498 | struct perf_tool *tool, |
f74725dc | 499 | u64 file_offset); |
cbf41645 | 500 | |
d25380cd | 501 | static int flush_sample_queue(struct perf_session *s, |
45694aa7 | 502 | struct perf_tool *tool) |
c61e52ee | 503 | { |
a1225dec TG |
504 | struct ordered_samples *os = &s->ordered_samples; |
505 | struct list_head *head = &os->samples; | |
c61e52ee | 506 | struct sample_queue *tmp, *iter; |
8d50e5b4 | 507 | struct perf_sample sample; |
a1225dec TG |
508 | u64 limit = os->next_flush; |
509 | u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL; | |
88660563 | 510 | unsigned idx = 0, progress_next = os->nr_samples / 16; |
5538beca | 511 | int ret; |
c61e52ee | 512 | |
45694aa7 | 513 | if (!tool->ordered_samples || !limit) |
d25380cd | 514 | return 0; |
c61e52ee FW |
515 | |
516 | list_for_each_entry_safe(iter, tmp, head, list) { | |
517 | if (iter->timestamp > limit) | |
a1225dec | 518 | break; |
c61e52ee | 519 | |
0807d2d8 | 520 | ret = perf_evlist__parse_sample(s->evlist, iter->event, &sample); |
5538beca FW |
521 | if (ret) |
522 | pr_err("Can't parse sample, err = %d\n", ret); | |
d25380cd DA |
523 | else { |
524 | ret = perf_session_deliver_event(s, iter->event, &sample, tool, | |
525 | iter->file_offset); | |
526 | if (ret) | |
527 | return ret; | |
528 | } | |
c61e52ee | 529 | |
a1225dec | 530 | os->last_flush = iter->timestamp; |
c61e52ee | 531 | list_del(&iter->list); |
020bb75a | 532 | list_add(&iter->list, &os->sample_cache); |
88660563 ACM |
533 | if (++idx >= progress_next) { |
534 | progress_next += os->nr_samples / 16; | |
535 | ui_progress__update(idx, os->nr_samples, | |
536 | "Processing time ordered events..."); | |
537 | } | |
c61e52ee | 538 | } |
a1225dec TG |
539 | |
540 | if (list_empty(head)) { | |
541 | os->last_sample = NULL; | |
542 | } else if (last_ts <= limit) { | |
543 | os->last_sample = | |
544 | list_entry(head->prev, struct sample_queue, list); | |
545 | } | |
88660563 ACM |
546 | |
547 | os->nr_samples = 0; | |
d25380cd DA |
548 | |
549 | return 0; | |
c61e52ee FW |
550 | } |
551 | ||
d6b17beb FW |
552 | /* |
553 | * When perf record finishes a pass on every buffers, it records this pseudo | |
554 | * event. | |
555 | * We record the max timestamp t found in the pass n. | |
556 | * Assuming these timestamps are monotonic across cpus, we know that if | |
557 | * a buffer still has events with timestamps below t, they will be all | |
558 | * available and then read in the pass n + 1. | |
559 | * Hence when we start to read the pass n + 2, we can safely flush every | |
560 | * events with timestamps below t. | |
561 | * | |
562 | * ============ PASS n ================= | |
563 | * CPU 0 | CPU 1 | |
564 | * | | |
565 | * cnt1 timestamps | cnt2 timestamps | |
566 | * 1 | 2 | |
567 | * 2 | 3 | |
568 | * - | 4 <--- max recorded | |
569 | * | |
570 | * ============ PASS n + 1 ============== | |
571 | * CPU 0 | CPU 1 | |
572 | * | | |
573 | * cnt1 timestamps | cnt2 timestamps | |
574 | * 3 | 5 | |
575 | * 4 | 6 | |
576 | * 5 | 7 <---- max recorded | |
577 | * | |
578 | * Flush every events below timestamp 4 | |
579 | * | |
580 | * ============ PASS n + 2 ============== | |
581 | * CPU 0 | CPU 1 | |
582 | * | | |
583 | * cnt1 timestamps | cnt2 timestamps | |
584 | * 6 | 8 | |
585 | * 7 | 9 | |
586 | * - | 10 | |
587 | * | |
588 | * Flush every events below timestamp 7 | |
589 | * etc... | |
590 | */ | |
45694aa7 | 591 | static int process_finished_round(struct perf_tool *tool, |
1d037ca1 | 592 | union perf_event *event __maybe_unused, |
d20deb64 | 593 | struct perf_session *session) |
d6b17beb | 594 | { |
d25380cd DA |
595 | int ret = flush_sample_queue(session, tool); |
596 | if (!ret) | |
597 | session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; | |
d6b17beb | 598 | |
d25380cd | 599 | return ret; |
d6b17beb FW |
600 | } |
601 | ||
c61e52ee | 602 | /* The queue is ordered by time */ |
cbf41645 | 603 | static void __queue_event(struct sample_queue *new, struct perf_session *s) |
c61e52ee | 604 | { |
a1225dec TG |
605 | struct ordered_samples *os = &s->ordered_samples; |
606 | struct sample_queue *sample = os->last_sample; | |
607 | u64 timestamp = new->timestamp; | |
608 | struct list_head *p; | |
c61e52ee | 609 | |
88660563 | 610 | ++os->nr_samples; |
a1225dec | 611 | os->last_sample = new; |
c61e52ee | 612 | |
a1225dec TG |
613 | if (!sample) { |
614 | list_add(&new->list, &os->samples); | |
615 | os->max_timestamp = timestamp; | |
c61e52ee FW |
616 | return; |
617 | } | |
618 | ||
619 | /* | |
a1225dec TG |
620 | * last_sample might point to some random place in the list as it's |
621 | * the last queued event. We expect that the new event is close to | |
622 | * this. | |
c61e52ee | 623 | */ |
a1225dec TG |
624 | if (sample->timestamp <= timestamp) { |
625 | while (sample->timestamp <= timestamp) { | |
626 | p = sample->list.next; | |
627 | if (p == &os->samples) { | |
628 | list_add_tail(&new->list, &os->samples); | |
629 | os->max_timestamp = timestamp; | |
630 | return; | |
631 | } | |
632 | sample = list_entry(p, struct sample_queue, list); | |
633 | } | |
634 | list_add_tail(&new->list, &sample->list); | |
635 | } else { | |
636 | while (sample->timestamp > timestamp) { | |
637 | p = sample->list.prev; | |
638 | if (p == &os->samples) { | |
639 | list_add(&new->list, &os->samples); | |
640 | return; | |
641 | } | |
642 | sample = list_entry(p, struct sample_queue, list); | |
643 | } | |
644 | list_add(&new->list, &sample->list); | |
645 | } | |
c61e52ee FW |
646 | } |
647 | ||
5c891f38 TG |
648 | #define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue)) |
649 | ||
8115d60c | 650 | static int perf_session_queue_event(struct perf_session *s, union perf_event *event, |
8d50e5b4 | 651 | struct perf_sample *sample, u64 file_offset) |
c61e52ee | 652 | { |
5c891f38 TG |
653 | struct ordered_samples *os = &s->ordered_samples; |
654 | struct list_head *sc = &os->sample_cache; | |
8d50e5b4 | 655 | u64 timestamp = sample->time; |
c61e52ee | 656 | struct sample_queue *new; |
c61e52ee | 657 | |
79a14c1f | 658 | if (!timestamp || timestamp == ~0ULL) |
cbf41645 TG |
659 | return -ETIME; |
660 | ||
c61e52ee FW |
661 | if (timestamp < s->ordered_samples.last_flush) { |
662 | printf("Warning: Timestamp below last timeslice flush\n"); | |
663 | return -EINVAL; | |
664 | } | |
665 | ||
020bb75a TG |
666 | if (!list_empty(sc)) { |
667 | new = list_entry(sc->next, struct sample_queue, list); | |
668 | list_del(&new->list); | |
5c891f38 TG |
669 | } else if (os->sample_buffer) { |
670 | new = os->sample_buffer + os->sample_buffer_idx; | |
671 | if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER) | |
672 | os->sample_buffer = NULL; | |
020bb75a | 673 | } else { |
5c891f38 TG |
674 | os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new)); |
675 | if (!os->sample_buffer) | |
020bb75a | 676 | return -ENOMEM; |
5c891f38 TG |
677 | list_add(&os->sample_buffer->list, &os->to_free); |
678 | os->sample_buffer_idx = 2; | |
679 | new = os->sample_buffer + 1; | |
020bb75a | 680 | } |
c61e52ee FW |
681 | |
682 | new->timestamp = timestamp; | |
e4c2df13 | 683 | new->file_offset = file_offset; |
fe174207 | 684 | new->event = event; |
c61e52ee | 685 | |
cbf41645 | 686 | __queue_event(new, s); |
640c03ce | 687 | |
640c03ce ACM |
688 | return 0; |
689 | } | |
c61e52ee | 690 | |
8d50e5b4 | 691 | static void callchain__printf(struct perf_sample *sample) |
640c03ce ACM |
692 | { |
693 | unsigned int i; | |
c61e52ee | 694 | |
9486aa38 | 695 | printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr); |
640c03ce ACM |
696 | |
697 | for (i = 0; i < sample->callchain->nr; i++) | |
9486aa38 ACM |
698 | printf("..... %2d: %016" PRIx64 "\n", |
699 | i, sample->callchain->ips[i]); | |
c61e52ee FW |
700 | } |
701 | ||
b5387528 RAV |
702 | static void branch_stack__printf(struct perf_sample *sample) |
703 | { | |
704 | uint64_t i; | |
705 | ||
706 | printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr); | |
707 | ||
708 | for (i = 0; i < sample->branch_stack->nr; i++) | |
709 | printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n", | |
710 | i, sample->branch_stack->entries[i].from, | |
711 | sample->branch_stack->entries[i].to); | |
712 | } | |
713 | ||
0f6a3015 JO |
714 | static void regs_dump__printf(u64 mask, u64 *regs) |
715 | { | |
716 | unsigned rid, i = 0; | |
717 | ||
718 | for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) { | |
719 | u64 val = regs[i++]; | |
720 | ||
721 | printf(".... %-5s 0x%" PRIx64 "\n", | |
722 | perf_reg_name(rid), val); | |
723 | } | |
724 | } | |
725 | ||
726 | static void regs_user__printf(struct perf_sample *sample, u64 mask) | |
727 | { | |
728 | struct regs_dump *user_regs = &sample->user_regs; | |
729 | ||
730 | if (user_regs->regs) { | |
731 | printf("... user regs: mask 0x%" PRIx64 "\n", mask); | |
732 | regs_dump__printf(mask, user_regs->regs); | |
733 | } | |
734 | } | |
735 | ||
736 | static void stack_user__printf(struct stack_dump *dump) | |
737 | { | |
738 | printf("... ustack: size %" PRIu64 ", offset 0x%x\n", | |
739 | dump->size, dump->offset); | |
740 | } | |
741 | ||
9c90a61c | 742 | static void perf_session__print_tstamp(struct perf_session *session, |
8115d60c | 743 | union perf_event *event, |
8d50e5b4 | 744 | struct perf_sample *sample) |
9c90a61c | 745 | { |
7f3be652 ACM |
746 | u64 sample_type = perf_evlist__sample_type(session->evlist); |
747 | ||
9c90a61c | 748 | if (event->header.type != PERF_RECORD_SAMPLE && |
5e562474 | 749 | !perf_evlist__sample_id_all(session->evlist)) { |
9c90a61c ACM |
750 | fputs("-1 -1 ", stdout); |
751 | return; | |
752 | } | |
753 | ||
7f3be652 | 754 | if ((sample_type & PERF_SAMPLE_CPU)) |
9c90a61c ACM |
755 | printf("%u ", sample->cpu); |
756 | ||
7f3be652 | 757 | if (sample_type & PERF_SAMPLE_TIME) |
9486aa38 | 758 | printf("%" PRIu64 " ", sample->time); |
9c90a61c ACM |
759 | } |
760 | ||
8115d60c | 761 | static void dump_event(struct perf_session *session, union perf_event *event, |
8d50e5b4 | 762 | u64 file_offset, struct perf_sample *sample) |
9aefcab0 TG |
763 | { |
764 | if (!dump_trace) | |
765 | return; | |
766 | ||
9486aa38 ACM |
767 | printf("\n%#" PRIx64 " [%#x]: event: %d\n", |
768 | file_offset, event->header.size, event->header.type); | |
9aefcab0 TG |
769 | |
770 | trace_event(event); | |
771 | ||
772 | if (sample) | |
773 | perf_session__print_tstamp(session, event, sample); | |
774 | ||
9486aa38 | 775 | printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset, |
8115d60c | 776 | event->header.size, perf_event__name(event->header.type)); |
9aefcab0 TG |
777 | } |
778 | ||
0f6a3015 | 779 | static void dump_sample(struct perf_evsel *evsel, union perf_event *event, |
8d50e5b4 | 780 | struct perf_sample *sample) |
9aefcab0 | 781 | { |
7f3be652 ACM |
782 | u64 sample_type; |
783 | ||
ddbc24b7 ACM |
784 | if (!dump_trace) |
785 | return; | |
786 | ||
7cec0922 | 787 | printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n", |
9486aa38 | 788 | event->header.misc, sample->pid, sample->tid, sample->ip, |
7cec0922 | 789 | sample->period, sample->addr); |
9aefcab0 | 790 | |
0f6a3015 | 791 | sample_type = evsel->attr.sample_type; |
7f3be652 ACM |
792 | |
793 | if (sample_type & PERF_SAMPLE_CALLCHAIN) | |
ddbc24b7 | 794 | callchain__printf(sample); |
b5387528 | 795 | |
7f3be652 | 796 | if (sample_type & PERF_SAMPLE_BRANCH_STACK) |
b5387528 | 797 | branch_stack__printf(sample); |
0f6a3015 JO |
798 | |
799 | if (sample_type & PERF_SAMPLE_REGS_USER) | |
800 | regs_user__printf(sample, evsel->attr.sample_regs_user); | |
801 | ||
802 | if (sample_type & PERF_SAMPLE_STACK_USER) | |
803 | stack_user__printf(&sample->user_stack); | |
05484298 AK |
804 | |
805 | if (sample_type & PERF_SAMPLE_WEIGHT) | |
806 | printf("... weight: %" PRIu64 "\n", sample->weight); | |
98a3b32c SE |
807 | |
808 | if (sample_type & PERF_SAMPLE_DATA_SRC) | |
809 | printf(" . data_src: 0x%"PRIx64"\n", sample->data_src); | |
9aefcab0 TG |
810 | } |
811 | ||
743eb868 ACM |
812 | static struct machine * |
813 | perf_session__find_machine_for_cpumode(struct perf_session *session, | |
814 | union perf_event *event) | |
815 | { | |
816 | const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
817 | ||
7c0f4a41 DA |
818 | if (perf_guest && |
819 | ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || | |
820 | (cpumode == PERF_RECORD_MISC_GUEST_USER))) { | |
7fb0a5ee ND |
821 | u32 pid; |
822 | ||
823 | if (event->header.type == PERF_RECORD_MMAP) | |
824 | pid = event->mmap.pid; | |
825 | else | |
826 | pid = event->ip.pid; | |
827 | ||
207b5792 | 828 | return perf_session__findnew_machine(session, pid); |
7fb0a5ee | 829 | } |
743eb868 | 830 | |
34ba5122 | 831 | return &session->machines.host; |
743eb868 ACM |
832 | } |
833 | ||
cbf41645 | 834 | static int perf_session_deliver_event(struct perf_session *session, |
8115d60c | 835 | union perf_event *event, |
8d50e5b4 | 836 | struct perf_sample *sample, |
45694aa7 | 837 | struct perf_tool *tool, |
532e7269 | 838 | u64 file_offset) |
cbf41645 | 839 | { |
9e69c210 | 840 | struct perf_evsel *evsel; |
743eb868 | 841 | struct machine *machine; |
9e69c210 | 842 | |
532e7269 TG |
843 | dump_event(session, event, file_offset, sample); |
844 | ||
7b27509f ACM |
845 | evsel = perf_evlist__id2evsel(session->evlist, sample->id); |
846 | if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) { | |
847 | /* | |
848 | * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here | |
849 | * because the tools right now may apply filters, discarding | |
850 | * some of the samples. For consistency, in the future we | |
851 | * should have something like nr_filtered_samples and remove | |
852 | * the sample->period from total_sample_period, etc, KISS for | |
853 | * now tho. | |
854 | * | |
855 | * Also testing against NULL allows us to handle files without | |
856 | * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the | |
857 | * future probably it'll be a good idea to restrict event | |
858 | * processing via perf_session to files with both set. | |
859 | */ | |
860 | hists__inc_nr_events(&evsel->hists, event->header.type); | |
861 | } | |
862 | ||
743eb868 ACM |
863 | machine = perf_session__find_machine_for_cpumode(session, event); |
864 | ||
cbf41645 TG |
865 | switch (event->header.type) { |
866 | case PERF_RECORD_SAMPLE: | |
0f6a3015 | 867 | dump_sample(evsel, event, sample); |
9e69c210 | 868 | if (evsel == NULL) { |
28a6b6aa | 869 | ++session->stats.nr_unknown_id; |
6782206b | 870 | return 0; |
9e69c210 | 871 | } |
0c095715 | 872 | if (machine == NULL) { |
28a6b6aa | 873 | ++session->stats.nr_unprocessable_samples; |
6782206b | 874 | return 0; |
0c095715 | 875 | } |
45694aa7 | 876 | return tool->sample(tool, event, sample, evsel, machine); |
cbf41645 | 877 | case PERF_RECORD_MMAP: |
45694aa7 | 878 | return tool->mmap(tool, event, sample, machine); |
cbf41645 | 879 | case PERF_RECORD_COMM: |
45694aa7 | 880 | return tool->comm(tool, event, sample, machine); |
cbf41645 | 881 | case PERF_RECORD_FORK: |
45694aa7 | 882 | return tool->fork(tool, event, sample, machine); |
cbf41645 | 883 | case PERF_RECORD_EXIT: |
45694aa7 | 884 | return tool->exit(tool, event, sample, machine); |
cbf41645 | 885 | case PERF_RECORD_LOST: |
45694aa7 | 886 | if (tool->lost == perf_event__process_lost) |
28a6b6aa | 887 | session->stats.total_lost += event->lost.lost; |
45694aa7 | 888 | return tool->lost(tool, event, sample, machine); |
cbf41645 | 889 | case PERF_RECORD_READ: |
45694aa7 | 890 | return tool->read(tool, event, sample, evsel, machine); |
cbf41645 | 891 | case PERF_RECORD_THROTTLE: |
45694aa7 | 892 | return tool->throttle(tool, event, sample, machine); |
cbf41645 | 893 | case PERF_RECORD_UNTHROTTLE: |
45694aa7 | 894 | return tool->unthrottle(tool, event, sample, machine); |
cbf41645 | 895 | default: |
28a6b6aa | 896 | ++session->stats.nr_unknown_events; |
cbf41645 TG |
897 | return -1; |
898 | } | |
899 | } | |
900 | ||
3dfc2c0a | 901 | static int perf_session__preprocess_sample(struct perf_session *session, |
8115d60c | 902 | union perf_event *event, struct perf_sample *sample) |
3dfc2c0a TG |
903 | { |
904 | if (event->header.type != PERF_RECORD_SAMPLE || | |
7f3be652 | 905 | !(perf_evlist__sample_type(session->evlist) & PERF_SAMPLE_CALLCHAIN)) |
3dfc2c0a TG |
906 | return 0; |
907 | ||
908 | if (!ip_callchain__valid(sample->callchain, event)) { | |
909 | pr_debug("call-chain problem with event, skipping it.\n"); | |
28a6b6aa ACM |
910 | ++session->stats.nr_invalid_chains; |
911 | session->stats.total_invalid_chains += sample->period; | |
3dfc2c0a TG |
912 | return -EINVAL; |
913 | } | |
914 | return 0; | |
915 | } | |
916 | ||
8115d60c | 917 | static int perf_session__process_user_event(struct perf_session *session, union perf_event *event, |
45694aa7 | 918 | struct perf_tool *tool, u64 file_offset) |
06aae590 | 919 | { |
10d0f086 ACM |
920 | int err; |
921 | ||
ba74f064 | 922 | dump_event(session, event, file_offset, NULL); |
06aae590 | 923 | |
cbf41645 | 924 | /* These events are processed right away */ |
06aae590 | 925 | switch (event->header.type) { |
2c46dbb5 | 926 | case PERF_RECORD_HEADER_ATTR: |
47c3d109 | 927 | err = tool->attr(tool, event, &session->evlist); |
10d0f086 | 928 | if (err == 0) |
7b56cce2 | 929 | perf_session__set_id_hdr_size(session); |
10d0f086 | 930 | return err; |
cd19a035 | 931 | case PERF_RECORD_HEADER_EVENT_TYPE: |
45694aa7 | 932 | return tool->event_type(tool, event); |
9215545e TZ |
933 | case PERF_RECORD_HEADER_TRACING_DATA: |
934 | /* setup for reading amidst mmap */ | |
cbf41645 | 935 | lseek(session->fd, file_offset, SEEK_SET); |
47c3d109 | 936 | return tool->tracing_data(tool, event, session); |
c7929e47 | 937 | case PERF_RECORD_HEADER_BUILD_ID: |
45694aa7 | 938 | return tool->build_id(tool, event, session); |
d6b17beb | 939 | case PERF_RECORD_FINISHED_ROUND: |
45694aa7 | 940 | return tool->finished_round(tool, event, session); |
06aae590 | 941 | default: |
ba74f064 | 942 | return -EINVAL; |
06aae590 | 943 | } |
ba74f064 TG |
944 | } |
945 | ||
268fb20f JO |
946 | static void event_swap(union perf_event *event, bool sample_id_all) |
947 | { | |
948 | perf_event__swap_op swap; | |
949 | ||
950 | swap = perf_event__swap_ops[event->header.type]; | |
951 | if (swap) | |
952 | swap(event, sample_id_all); | |
953 | } | |
954 | ||
ba74f064 | 955 | static int perf_session__process_event(struct perf_session *session, |
8115d60c | 956 | union perf_event *event, |
45694aa7 | 957 | struct perf_tool *tool, |
ba74f064 TG |
958 | u64 file_offset) |
959 | { | |
8d50e5b4 | 960 | struct perf_sample sample; |
ba74f064 TG |
961 | int ret; |
962 | ||
268fb20f | 963 | if (session->header.needs_swap) |
5e562474 | 964 | event_swap(event, perf_evlist__sample_id_all(session->evlist)); |
ba74f064 TG |
965 | |
966 | if (event->header.type >= PERF_RECORD_HEADER_MAX) | |
967 | return -EINVAL; | |
968 | ||
28a6b6aa | 969 | events_stats__inc(&session->stats, event->header.type); |
ba74f064 TG |
970 | |
971 | if (event->header.type >= PERF_RECORD_USER_TYPE_START) | |
45694aa7 | 972 | return perf_session__process_user_event(session, event, tool, file_offset); |
cbf41645 | 973 | |
3dfc2c0a TG |
974 | /* |
975 | * For all kernel events we get the sample data | |
976 | */ | |
0807d2d8 | 977 | ret = perf_evlist__parse_sample(session->evlist, event, &sample); |
5538beca FW |
978 | if (ret) |
979 | return ret; | |
3dfc2c0a TG |
980 | |
981 | /* Preprocess sample records - precheck callchains */ | |
982 | if (perf_session__preprocess_sample(session, event, &sample)) | |
983 | return 0; | |
984 | ||
45694aa7 | 985 | if (tool->ordered_samples) { |
e4c2df13 TG |
986 | ret = perf_session_queue_event(session, event, &sample, |
987 | file_offset); | |
cbf41645 TG |
988 | if (ret != -ETIME) |
989 | return ret; | |
990 | } | |
991 | ||
45694aa7 | 992 | return perf_session_deliver_event(session, event, &sample, tool, |
f74725dc | 993 | file_offset); |
06aae590 ACM |
994 | } |
995 | ||
ba21594c ACM |
996 | void perf_event_header__bswap(struct perf_event_header *self) |
997 | { | |
998 | self->type = bswap_32(self->type); | |
999 | self->misc = bswap_16(self->misc); | |
1000 | self->size = bswap_16(self->size); | |
1001 | } | |
1002 | ||
b424eba2 ACM |
1003 | struct thread *perf_session__findnew(struct perf_session *session, pid_t pid) |
1004 | { | |
876650e6 | 1005 | return machine__findnew_thread(&session->machines.host, pid); |
b424eba2 ACM |
1006 | } |
1007 | ||
06aae590 ACM |
1008 | static struct thread *perf_session__register_idle_thread(struct perf_session *self) |
1009 | { | |
1010 | struct thread *thread = perf_session__findnew(self, 0); | |
1011 | ||
1012 | if (thread == NULL || thread__set_comm(thread, "swapper")) { | |
1013 | pr_err("problem inserting idle task.\n"); | |
1014 | thread = NULL; | |
1015 | } | |
1016 | ||
1017 | return thread; | |
1018 | } | |
1019 | ||
11095994 | 1020 | static void perf_session__warn_about_errors(const struct perf_session *session, |
45694aa7 | 1021 | const struct perf_tool *tool) |
11095994 | 1022 | { |
45694aa7 | 1023 | if (tool->lost == perf_event__process_lost && |
28a6b6aa | 1024 | session->stats.nr_events[PERF_RECORD_LOST] != 0) { |
7b27509f ACM |
1025 | ui__warning("Processed %d events and lost %d chunks!\n\n" |
1026 | "Check IO/CPU overload!\n\n", | |
28a6b6aa ACM |
1027 | session->stats.nr_events[0], |
1028 | session->stats.nr_events[PERF_RECORD_LOST]); | |
11095994 ACM |
1029 | } |
1030 | ||
28a6b6aa | 1031 | if (session->stats.nr_unknown_events != 0) { |
11095994 ACM |
1032 | ui__warning("Found %u unknown events!\n\n" |
1033 | "Is this an older tool processing a perf.data " | |
1034 | "file generated by a more recent tool?\n\n" | |
1035 | "If that is not the case, consider " | |
1036 | "reporting to linux-kernel@vger.kernel.org.\n\n", | |
28a6b6aa | 1037 | session->stats.nr_unknown_events); |
11095994 ACM |
1038 | } |
1039 | ||
28a6b6aa | 1040 | if (session->stats.nr_unknown_id != 0) { |
9e69c210 | 1041 | ui__warning("%u samples with id not present in the header\n", |
28a6b6aa | 1042 | session->stats.nr_unknown_id); |
9e69c210 ACM |
1043 | } |
1044 | ||
28a6b6aa | 1045 | if (session->stats.nr_invalid_chains != 0) { |
11095994 ACM |
1046 | ui__warning("Found invalid callchains!\n\n" |
1047 | "%u out of %u events were discarded for this reason.\n\n" | |
1048 | "Consider reporting to linux-kernel@vger.kernel.org.\n\n", | |
28a6b6aa ACM |
1049 | session->stats.nr_invalid_chains, |
1050 | session->stats.nr_events[PERF_RECORD_SAMPLE]); | |
11095994 | 1051 | } |
0c095715 | 1052 | |
28a6b6aa | 1053 | if (session->stats.nr_unprocessable_samples != 0) { |
0c095715 JR |
1054 | ui__warning("%u unprocessable samples recorded.\n" |
1055 | "Do you have a KVM guest running and not using 'perf kvm'?\n", | |
28a6b6aa | 1056 | session->stats.nr_unprocessable_samples); |
0c095715 | 1057 | } |
11095994 ACM |
1058 | } |
1059 | ||
8dc58101 TZ |
1060 | #define session_done() (*(volatile int *)(&session_done)) |
1061 | volatile int session_done; | |
1062 | ||
1063 | static int __perf_session__process_pipe_events(struct perf_session *self, | |
45694aa7 | 1064 | struct perf_tool *tool) |
8dc58101 | 1065 | { |
444d2866 SE |
1066 | union perf_event *event; |
1067 | uint32_t size, cur_size = 0; | |
1068 | void *buf = NULL; | |
8dc58101 TZ |
1069 | int skip = 0; |
1070 | u64 head; | |
1071 | int err; | |
1072 | void *p; | |
1073 | ||
45694aa7 | 1074 | perf_tool__fill_defaults(tool); |
8dc58101 TZ |
1075 | |
1076 | head = 0; | |
444d2866 SE |
1077 | cur_size = sizeof(union perf_event); |
1078 | ||
1079 | buf = malloc(cur_size); | |
1080 | if (!buf) | |
1081 | return -errno; | |
8dc58101 | 1082 | more: |
444d2866 SE |
1083 | event = buf; |
1084 | err = readn(self->fd, event, sizeof(struct perf_event_header)); | |
8dc58101 TZ |
1085 | if (err <= 0) { |
1086 | if (err == 0) | |
1087 | goto done; | |
1088 | ||
1089 | pr_err("failed to read event header\n"); | |
1090 | goto out_err; | |
1091 | } | |
1092 | ||
1093 | if (self->header.needs_swap) | |
444d2866 | 1094 | perf_event_header__bswap(&event->header); |
8dc58101 | 1095 | |
444d2866 | 1096 | size = event->header.size; |
8dc58101 TZ |
1097 | if (size == 0) |
1098 | size = 8; | |
1099 | ||
444d2866 SE |
1100 | if (size > cur_size) { |
1101 | void *new = realloc(buf, size); | |
1102 | if (!new) { | |
1103 | pr_err("failed to allocate memory to read event\n"); | |
1104 | goto out_err; | |
1105 | } | |
1106 | buf = new; | |
1107 | cur_size = size; | |
1108 | event = buf; | |
1109 | } | |
1110 | p = event; | |
8dc58101 TZ |
1111 | p += sizeof(struct perf_event_header); |
1112 | ||
794e43b5 | 1113 | if (size - sizeof(struct perf_event_header)) { |
1e7972cc | 1114 | err = readn(self->fd, p, size - sizeof(struct perf_event_header)); |
794e43b5 TZ |
1115 | if (err <= 0) { |
1116 | if (err == 0) { | |
1117 | pr_err("unexpected end of event stream\n"); | |
1118 | goto done; | |
1119 | } | |
8dc58101 | 1120 | |
794e43b5 TZ |
1121 | pr_err("failed to read event data\n"); |
1122 | goto out_err; | |
1123 | } | |
8dc58101 TZ |
1124 | } |
1125 | ||
444d2866 | 1126 | if ((skip = perf_session__process_event(self, event, tool, head)) < 0) { |
9389a460 | 1127 | pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", |
444d2866 | 1128 | head, event->header.size, event->header.type); |
9389a460 JO |
1129 | err = -EINVAL; |
1130 | goto out_err; | |
8dc58101 TZ |
1131 | } |
1132 | ||
1133 | head += size; | |
1134 | ||
8dc58101 TZ |
1135 | if (skip > 0) |
1136 | head += skip; | |
1137 | ||
1138 | if (!session_done()) | |
1139 | goto more; | |
1140 | done: | |
1141 | err = 0; | |
1142 | out_err: | |
444d2866 | 1143 | free(buf); |
45694aa7 | 1144 | perf_session__warn_about_errors(self, tool); |
020bb75a | 1145 | perf_session_free_sample_buffers(self); |
8dc58101 TZ |
1146 | return err; |
1147 | } | |
1148 | ||
998bedc8 FW |
1149 | static union perf_event * |
1150 | fetch_mmaped_event(struct perf_session *session, | |
1151 | u64 head, size_t mmap_size, char *buf) | |
1152 | { | |
1153 | union perf_event *event; | |
1154 | ||
1155 | /* | |
1156 | * Ensure we have enough space remaining to read | |
1157 | * the size of the event in the headers. | |
1158 | */ | |
1159 | if (head + sizeof(event->header) > mmap_size) | |
1160 | return NULL; | |
1161 | ||
1162 | event = (union perf_event *)(buf + head); | |
1163 | ||
1164 | if (session->header.needs_swap) | |
1165 | perf_event_header__bswap(&event->header); | |
1166 | ||
1167 | if (head + event->header.size > mmap_size) | |
1168 | return NULL; | |
1169 | ||
1170 | return event; | |
1171 | } | |
1172 | ||
35d48ddf DM |
1173 | /* |
1174 | * On 64bit we can mmap the data file in one go. No need for tiny mmap | |
1175 | * slices. On 32bit we use 32MB. | |
1176 | */ | |
1177 | #if BITS_PER_LONG == 64 | |
1178 | #define MMAP_SIZE ULLONG_MAX | |
1179 | #define NUM_MMAPS 1 | |
1180 | #else | |
1181 | #define MMAP_SIZE (32 * 1024 * 1024ULL) | |
1182 | #define NUM_MMAPS 128 | |
1183 | #endif | |
1184 | ||
0331ee0c | 1185 | int __perf_session__process_events(struct perf_session *session, |
6122e4e4 | 1186 | u64 data_offset, u64 data_size, |
45694aa7 | 1187 | u64 file_size, struct perf_tool *tool) |
06aae590 | 1188 | { |
55b44629 | 1189 | u64 head, page_offset, file_offset, file_pos, progress_next; |
fe174207 | 1190 | int err, mmap_prot, mmap_flags, map_idx = 0; |
0c1fe6b2 | 1191 | size_t mmap_size; |
35d48ddf | 1192 | char *buf, *mmaps[NUM_MMAPS]; |
8115d60c | 1193 | union perf_event *event; |
06aae590 | 1194 | uint32_t size; |
0331ee0c | 1195 | |
45694aa7 | 1196 | perf_tool__fill_defaults(tool); |
06aae590 | 1197 | |
0331ee0c TG |
1198 | page_offset = page_size * (data_offset / page_size); |
1199 | file_offset = page_offset; | |
1200 | head = data_offset - page_offset; | |
06aae590 | 1201 | |
d6513281 TG |
1202 | if (data_offset + data_size < file_size) |
1203 | file_size = data_offset + data_size; | |
1204 | ||
55b44629 | 1205 | progress_next = file_size / 16; |
55b44629 | 1206 | |
35d48ddf | 1207 | mmap_size = MMAP_SIZE; |
55b44629 TG |
1208 | if (mmap_size > file_size) |
1209 | mmap_size = file_size; | |
1210 | ||
fe174207 TG |
1211 | memset(mmaps, 0, sizeof(mmaps)); |
1212 | ||
ba21594c ACM |
1213 | mmap_prot = PROT_READ; |
1214 | mmap_flags = MAP_SHARED; | |
1215 | ||
0331ee0c | 1216 | if (session->header.needs_swap) { |
ba21594c ACM |
1217 | mmap_prot |= PROT_WRITE; |
1218 | mmap_flags = MAP_PRIVATE; | |
1219 | } | |
06aae590 | 1220 | remap: |
55b44629 TG |
1221 | buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd, |
1222 | file_offset); | |
06aae590 ACM |
1223 | if (buf == MAP_FAILED) { |
1224 | pr_err("failed to mmap file\n"); | |
1225 | err = -errno; | |
1226 | goto out_err; | |
1227 | } | |
fe174207 TG |
1228 | mmaps[map_idx] = buf; |
1229 | map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1); | |
d6513281 | 1230 | file_pos = file_offset + head; |
06aae590 ACM |
1231 | |
1232 | more: | |
998bedc8 FW |
1233 | event = fetch_mmaped_event(session, head, mmap_size, buf); |
1234 | if (!event) { | |
fe174207 TG |
1235 | if (mmaps[map_idx]) { |
1236 | munmap(mmaps[map_idx], mmap_size); | |
1237 | mmaps[map_idx] = NULL; | |
1238 | } | |
06aae590 | 1239 | |
0331ee0c TG |
1240 | page_offset = page_size * (head / page_size); |
1241 | file_offset += page_offset; | |
1242 | head -= page_offset; | |
06aae590 ACM |
1243 | goto remap; |
1244 | } | |
1245 | ||
1246 | size = event->header.size; | |
1247 | ||
d6513281 | 1248 | if (size == 0 || |
45694aa7 | 1249 | perf_session__process_event(session, event, tool, file_pos) < 0) { |
9389a460 JO |
1250 | pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n", |
1251 | file_offset + head, event->header.size, | |
1252 | event->header.type); | |
1253 | err = -EINVAL; | |
1254 | goto out_err; | |
06aae590 ACM |
1255 | } |
1256 | ||
1257 | head += size; | |
d6513281 | 1258 | file_pos += size; |
06aae590 | 1259 | |
55b44629 TG |
1260 | if (file_pos >= progress_next) { |
1261 | progress_next += file_size / 16; | |
ca59bcbc ACM |
1262 | ui_progress__update(file_pos, file_size, |
1263 | "Processing events..."); | |
55b44629 TG |
1264 | } |
1265 | ||
d6513281 | 1266 | if (file_pos < file_size) |
06aae590 | 1267 | goto more; |
d6513281 | 1268 | |
06aae590 | 1269 | err = 0; |
c61e52ee | 1270 | /* do the final flush for ordered samples */ |
0331ee0c | 1271 | session->ordered_samples.next_flush = ULLONG_MAX; |
d25380cd | 1272 | err = flush_sample_queue(session, tool); |
06aae590 | 1273 | out_err: |
a5580f3e | 1274 | ui_progress__finish(); |
45694aa7 | 1275 | perf_session__warn_about_errors(session, tool); |
020bb75a | 1276 | perf_session_free_sample_buffers(session); |
06aae590 ACM |
1277 | return err; |
1278 | } | |
27295592 | 1279 | |
6122e4e4 | 1280 | int perf_session__process_events(struct perf_session *self, |
45694aa7 | 1281 | struct perf_tool *tool) |
6122e4e4 ACM |
1282 | { |
1283 | int err; | |
1284 | ||
1285 | if (perf_session__register_idle_thread(self) == NULL) | |
1286 | return -ENOMEM; | |
1287 | ||
8dc58101 TZ |
1288 | if (!self->fd_pipe) |
1289 | err = __perf_session__process_events(self, | |
1290 | self->header.data_offset, | |
1291 | self->header.data_size, | |
45694aa7 | 1292 | self->size, tool); |
8dc58101 | 1293 | else |
45694aa7 | 1294 | err = __perf_session__process_pipe_events(self, tool); |
88ca895d | 1295 | |
6122e4e4 ACM |
1296 | return err; |
1297 | } | |
1298 | ||
7f3be652 | 1299 | bool perf_session__has_traces(struct perf_session *session, const char *msg) |
27295592 | 1300 | { |
7f3be652 | 1301 | if (!(perf_evlist__sample_type(session->evlist) & PERF_SAMPLE_RAW)) { |
d549c769 ACM |
1302 | pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); |
1303 | return false; | |
27295592 ACM |
1304 | } |
1305 | ||
d549c769 | 1306 | return true; |
27295592 | 1307 | } |
56b03f3c | 1308 | |
743eb868 ACM |
1309 | int maps__set_kallsyms_ref_reloc_sym(struct map **maps, |
1310 | const char *symbol_name, u64 addr) | |
56b03f3c ACM |
1311 | { |
1312 | char *bracket; | |
9de89fe7 | 1313 | enum map_type i; |
a1645ce1 ZY |
1314 | struct ref_reloc_sym *ref; |
1315 | ||
1316 | ref = zalloc(sizeof(struct ref_reloc_sym)); | |
1317 | if (ref == NULL) | |
1318 | return -ENOMEM; | |
56b03f3c | 1319 | |
a1645ce1 ZY |
1320 | ref->name = strdup(symbol_name); |
1321 | if (ref->name == NULL) { | |
1322 | free(ref); | |
56b03f3c | 1323 | return -ENOMEM; |
a1645ce1 | 1324 | } |
56b03f3c | 1325 | |
a1645ce1 | 1326 | bracket = strchr(ref->name, ']'); |
56b03f3c ACM |
1327 | if (bracket) |
1328 | *bracket = '\0'; | |
1329 | ||
a1645ce1 | 1330 | ref->addr = addr; |
9de89fe7 ACM |
1331 | |
1332 | for (i = 0; i < MAP__NR_TYPES; ++i) { | |
a1645ce1 ZY |
1333 | struct kmap *kmap = map__kmap(maps[i]); |
1334 | kmap->ref_reloc_sym = ref; | |
9de89fe7 ACM |
1335 | } |
1336 | ||
56b03f3c ACM |
1337 | return 0; |
1338 | } | |
1f626bc3 ACM |
1339 | |
1340 | size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp) | |
1341 | { | |
876650e6 | 1342 | return machines__fprintf_dsos(&self->machines, fp); |
1f626bc3 | 1343 | } |
f869097e ACM |
1344 | |
1345 | size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp, | |
417c2ff6 | 1346 | bool (skip)(struct dso *dso, int parm), int parm) |
f869097e | 1347 | { |
876650e6 | 1348 | return machines__fprintf_dsos_buildid(&self->machines, fp, skip, parm); |
f869097e | 1349 | } |
e248de33 ACM |
1350 | |
1351 | size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp) | |
1352 | { | |
1353 | struct perf_evsel *pos; | |
1354 | size_t ret = fprintf(fp, "Aggregated stats:\n"); | |
1355 | ||
28a6b6aa | 1356 | ret += events_stats__fprintf(&session->stats, fp); |
e248de33 ACM |
1357 | |
1358 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
7289f83c | 1359 | ret += fprintf(fp, "%s stats:\n", perf_evsel__name(pos)); |
52168eea | 1360 | ret += events_stats__fprintf(&pos->hists.stats, fp); |
e248de33 ACM |
1361 | } |
1362 | ||
1363 | return ret; | |
1364 | } | |
c0230b2b | 1365 | |
b424eba2 ACM |
1366 | size_t perf_session__fprintf(struct perf_session *session, FILE *fp) |
1367 | { | |
1368 | /* | |
1369 | * FIXME: Here we have to actually print all the machines in this | |
1370 | * session, not just the host... | |
1371 | */ | |
876650e6 | 1372 | return machine__fprintf(&session->machines.host, fp); |
b424eba2 ACM |
1373 | } |
1374 | ||
9cbdb702 DA |
1375 | struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session, |
1376 | unsigned int type) | |
1377 | { | |
1378 | struct perf_evsel *pos; | |
1379 | ||
1380 | list_for_each_entry(pos, &session->evlist->entries, node) { | |
1381 | if (pos->attr.type == type) | |
1382 | return pos; | |
1383 | } | |
1384 | return NULL; | |
1385 | } | |
1386 | ||
71ad0f5e JO |
1387 | void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event, |
1388 | struct perf_sample *sample, struct machine *machine, | |
1389 | int print_sym, int print_dso, int print_symoffset) | |
c0230b2b DA |
1390 | { |
1391 | struct addr_location al; | |
c0230b2b DA |
1392 | struct callchain_cursor_node *node; |
1393 | ||
743eb868 | 1394 | if (perf_event__preprocess_sample(event, machine, &al, sample, |
c0230b2b DA |
1395 | NULL) < 0) { |
1396 | error("problem processing %d event, skipping it.\n", | |
1397 | event->header.type); | |
1398 | return; | |
1399 | } | |
1400 | ||
1401 | if (symbol_conf.use_callchain && sample->callchain) { | |
1402 | ||
71ad0f5e JO |
1403 | |
1404 | if (machine__resolve_callchain(machine, evsel, al.thread, | |
1405 | sample, NULL) != 0) { | |
c0230b2b DA |
1406 | if (verbose) |
1407 | error("Failed to resolve callchain. Skipping\n"); | |
1408 | return; | |
1409 | } | |
47260645 | 1410 | callchain_cursor_commit(&callchain_cursor); |
c0230b2b DA |
1411 | |
1412 | while (1) { | |
47260645 | 1413 | node = callchain_cursor_current(&callchain_cursor); |
c0230b2b DA |
1414 | if (!node) |
1415 | break; | |
1416 | ||
787bef17 DA |
1417 | printf("\t%16" PRIx64, node->ip); |
1418 | if (print_sym) { | |
547a92e0 AN |
1419 | printf(" "); |
1420 | symbol__fprintf_symname(node->sym, stdout); | |
610723f2 DA |
1421 | } |
1422 | if (print_dso) { | |
547a92e0 | 1423 | printf(" ("); |
52deff71 | 1424 | map__fprintf_dsoname(node->map, stdout); |
547a92e0 | 1425 | printf(")"); |
787bef17 DA |
1426 | } |
1427 | printf("\n"); | |
c0230b2b | 1428 | |
47260645 | 1429 | callchain_cursor_advance(&callchain_cursor); |
c0230b2b DA |
1430 | } |
1431 | ||
1432 | } else { | |
adc4bf99 | 1433 | printf("%16" PRIx64, sample->ip); |
787bef17 | 1434 | if (print_sym) { |
547a92e0 | 1435 | printf(" "); |
a978f2ab AN |
1436 | if (print_symoffset) |
1437 | symbol__fprintf_symname_offs(al.sym, &al, | |
1438 | stdout); | |
1439 | else | |
1440 | symbol__fprintf_symname(al.sym, stdout); | |
610723f2 DA |
1441 | } |
1442 | ||
1443 | if (print_dso) { | |
547a92e0 AN |
1444 | printf(" ("); |
1445 | map__fprintf_dsoname(al.map, stdout); | |
1446 | printf(")"); | |
787bef17 | 1447 | } |
c0230b2b DA |
1448 | } |
1449 | } | |
5d67be97 AB |
1450 | |
1451 | int perf_session__cpu_bitmap(struct perf_session *session, | |
1452 | const char *cpu_list, unsigned long *cpu_bitmap) | |
1453 | { | |
1454 | int i; | |
1455 | struct cpu_map *map; | |
1456 | ||
1457 | for (i = 0; i < PERF_TYPE_MAX; ++i) { | |
1458 | struct perf_evsel *evsel; | |
1459 | ||
1460 | evsel = perf_session__find_first_evtype(session, i); | |
1461 | if (!evsel) | |
1462 | continue; | |
1463 | ||
1464 | if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) { | |
1465 | pr_err("File does not contain CPU events. " | |
1466 | "Remove -c option to proceed.\n"); | |
1467 | return -1; | |
1468 | } | |
1469 | } | |
1470 | ||
1471 | map = cpu_map__new(cpu_list); | |
47fbe53b DA |
1472 | if (map == NULL) { |
1473 | pr_err("Invalid cpu_list\n"); | |
1474 | return -1; | |
1475 | } | |
5d67be97 AB |
1476 | |
1477 | for (i = 0; i < map->nr; i++) { | |
1478 | int cpu = map->map[i]; | |
1479 | ||
1480 | if (cpu >= MAX_NR_CPUS) { | |
1481 | pr_err("Requested CPU %d too large. " | |
1482 | "Consider raising MAX_NR_CPUS\n", cpu); | |
1483 | return -1; | |
1484 | } | |
1485 | ||
1486 | set_bit(cpu, cpu_bitmap); | |
1487 | } | |
1488 | ||
1489 | return 0; | |
1490 | } | |
fbe96f29 SE |
1491 | |
1492 | void perf_session__fprintf_info(struct perf_session *session, FILE *fp, | |
1493 | bool full) | |
1494 | { | |
1495 | struct stat st; | |
1496 | int ret; | |
1497 | ||
1498 | if (session == NULL || fp == NULL) | |
1499 | return; | |
1500 | ||
1501 | ret = fstat(session->fd, &st); | |
1502 | if (ret == -1) | |
1503 | return; | |
1504 | ||
1505 | fprintf(fp, "# ========\n"); | |
1506 | fprintf(fp, "# captured on: %s", ctime(&st.st_ctime)); | |
1507 | perf_header__fprintf_info(session, fp, full); | |
1508 | fprintf(fp, "# ========\n#\n"); | |
1509 | } | |
da378962 ACM |
1510 | |
1511 | ||
1512 | int __perf_session__set_tracepoints_handlers(struct perf_session *session, | |
1513 | const struct perf_evsel_str_handler *assocs, | |
1514 | size_t nr_assocs) | |
1515 | { | |
1516 | struct perf_evlist *evlist = session->evlist; | |
1517 | struct event_format *format; | |
1518 | struct perf_evsel *evsel; | |
1519 | char *tracepoint, *name; | |
1520 | size_t i; | |
1521 | int err; | |
1522 | ||
1523 | for (i = 0; i < nr_assocs; i++) { | |
1524 | err = -ENOMEM; | |
1525 | tracepoint = strdup(assocs[i].name); | |
1526 | if (tracepoint == NULL) | |
1527 | goto out; | |
1528 | ||
1529 | err = -ENOENT; | |
1530 | name = strchr(tracepoint, ':'); | |
1531 | if (name == NULL) | |
1532 | goto out_free; | |
1533 | ||
1534 | *name++ = '\0'; | |
1535 | format = pevent_find_event_by_name(session->pevent, | |
1536 | tracepoint, name); | |
1537 | if (format == NULL) { | |
1538 | /* | |
1539 | * Adding a handler for an event not in the session, | |
1540 | * just ignore it. | |
1541 | */ | |
1542 | goto next; | |
1543 | } | |
1544 | ||
1545 | evsel = perf_evlist__find_tracepoint_by_id(evlist, format->id); | |
1546 | if (evsel == NULL) | |
1547 | goto next; | |
1548 | ||
1549 | err = -EEXIST; | |
1550 | if (evsel->handler.func != NULL) | |
1551 | goto out_free; | |
1552 | evsel->handler.func = assocs[i].handler; | |
1553 | next: | |
1554 | free(tracepoint); | |
1555 | } | |
1556 | ||
1557 | err = 0; | |
1558 | out: | |
1559 | return err; | |
1560 | ||
1561 | out_free: | |
1562 | free(tracepoint); | |
1563 | goto out; | |
1564 | } |