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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
454c407e TZ |
2 | /* |
3 | * builtin-inject.c | |
4 | * | |
5 | * Builtin inject command: Examine the live mode (stdin) event stream | |
6 | * and repipe it to stdout while optionally injecting additional | |
7 | * events into it. | |
8 | */ | |
9 | #include "builtin.h" | |
10 | ||
26a031e1 | 11 | #include "util/color.h" |
4a3cec84 | 12 | #include "util/dso.h" |
27c9c342 | 13 | #include "util/vdso.h" |
26a031e1 AV |
14 | #include "util/evlist.h" |
15 | #include "util/evsel.h" | |
1101f69a | 16 | #include "util/map.h" |
454c407e | 17 | #include "util/session.h" |
45694aa7 | 18 | #include "util/tool.h" |
454c407e | 19 | #include "util/debug.h" |
54a3cf59 | 20 | #include "util/build-id.h" |
f5fc1412 | 21 | #include "util/data.h" |
0f0aa5e0 | 22 | #include "util/auxtrace.h" |
9b07e27f | 23 | #include "util/jit.h" |
8012243e | 24 | #include "util/string2.h" |
daecf9e0 | 25 | #include "util/symbol.h" |
ea49e01c | 26 | #include "util/synthetic-events.h" |
e7ff8920 | 27 | #include "util/thread.h" |
336c95b2 | 28 | #include "util/namespaces.h" |
75d48c56 | 29 | #include "util/util.h" |
97406a7e | 30 | #include "util/tsc.h" |
454c407e | 31 | |
180b3d06 AH |
32 | #include <internal/lib.h> |
33 | ||
e7b60c5a | 34 | #include <linux/err.h> |
4b6ab94e | 35 | #include <subcmd/parse-options.h> |
e7b60c5a | 36 | #include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */ |
454c407e | 37 | |
26a031e1 | 38 | #include <linux/list.h> |
83d7f5f1 | 39 | #include <linux/string.h> |
97406a7e AH |
40 | #include <linux/zalloc.h> |
41 | #include <linux/hash.h> | |
8012243e | 42 | #include <ctype.h> |
a43783ae | 43 | #include <errno.h> |
9607ad3a | 44 | #include <signal.h> |
97406a7e AH |
45 | #include <inttypes.h> |
46 | ||
47 | struct guest_event { | |
48 | struct perf_sample sample; | |
49 | union perf_event *event; | |
892d00fb | 50 | char *event_buf; |
97406a7e AH |
51 | }; |
52 | ||
53 | struct guest_id { | |
54 | /* hlist_node must be first, see free_hlist() */ | |
55 | struct hlist_node node; | |
56 | u64 id; | |
57 | u64 host_id; | |
58 | u32 vcpu; | |
59 | }; | |
60 | ||
61 | struct guest_tid { | |
62 | /* hlist_node must be first, see free_hlist() */ | |
63 | struct hlist_node node; | |
64 | /* Thread ID of QEMU thread */ | |
65 | u32 tid; | |
66 | u32 vcpu; | |
67 | }; | |
68 | ||
69 | struct guest_vcpu { | |
70 | /* Current host CPU */ | |
71 | u32 cpu; | |
72 | /* Thread ID of QEMU thread */ | |
73 | u32 tid; | |
74 | }; | |
75 | ||
76 | struct guest_session { | |
77 | char *perf_data_file; | |
78 | u32 machine_pid; | |
79 | u64 time_offset; | |
80 | double time_scale; | |
81 | struct perf_tool tool; | |
82 | struct perf_data data; | |
83 | struct perf_session *session; | |
84 | char *tmp_file_name; | |
85 | int tmp_fd; | |
86 | struct perf_tsc_conversion host_tc; | |
87 | struct perf_tsc_conversion guest_tc; | |
88 | bool copy_kcore_dir; | |
89 | bool have_tc; | |
90 | bool fetched; | |
91 | bool ready; | |
92 | u16 dflt_id_hdr_size; | |
93 | u64 dflt_id; | |
94 | u64 highest_id; | |
95 | /* Array of guest_vcpu */ | |
96 | struct guest_vcpu *vcpu; | |
97 | size_t vcpu_cnt; | |
98 | /* Hash table for guest_id */ | |
99 | struct hlist_head heads[PERF_EVLIST__HLIST_SIZE]; | |
100 | /* Hash table for guest_tid */ | |
101 | struct hlist_head tids[PERF_EVLIST__HLIST_SIZE]; | |
102 | /* Place to stash next guest event */ | |
103 | struct guest_event ev; | |
104 | }; | |
26a031e1 | 105 | |
5ded57ac | 106 | struct perf_inject { |
3406912c | 107 | struct perf_tool tool; |
1cb8bdcc | 108 | struct perf_session *session; |
3406912c | 109 | bool build_ids; |
27c9c342 | 110 | bool build_id_all; |
3406912c | 111 | bool sched_stat; |
cd10b289 | 112 | bool have_auxtrace; |
f56fb986 | 113 | bool strip; |
9b07e27f | 114 | bool jit_mode; |
2a525f6a AH |
115 | bool in_place_update; |
116 | bool in_place_update_dry_run; | |
fea20d66 | 117 | bool is_pipe; |
d8fc0855 | 118 | bool copy_kcore_dir; |
3406912c | 119 | const char *input_name; |
8ceb41d7 | 120 | struct perf_data output; |
3406912c | 121 | u64 bytes_written; |
73117308 | 122 | u64 aux_id; |
3406912c | 123 | struct list_head samples; |
0f0aa5e0 | 124 | struct itrace_synth_opts itrace_synth_opts; |
d3944f0e | 125 | char *event_copy; |
180b3d06 | 126 | struct perf_file_section secs[HEADER_FEAT_BITS]; |
97406a7e | 127 | struct guest_session guest_session; |
8012243e | 128 | struct strlist *known_build_ids; |
26a031e1 AV |
129 | }; |
130 | ||
131 | struct event_entry { | |
132 | struct list_head node; | |
133 | u32 tid; | |
6549a8c0 | 134 | union perf_event event[]; |
5ded57ac | 135 | }; |
454c407e | 136 | |
27c9c342 NK |
137 | static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool, |
138 | struct machine *machine, u8 cpumode, u32 flags); | |
139 | ||
cd17a9b5 | 140 | static int output_bytes(struct perf_inject *inject, void *buf, size_t sz) |
454c407e | 141 | { |
3406912c | 142 | ssize_t size; |
454c407e | 143 | |
8ceb41d7 | 144 | size = perf_data__write(&inject->output, buf, sz); |
3406912c JO |
145 | if (size < 0) |
146 | return -errno; | |
454c407e | 147 | |
3406912c | 148 | inject->bytes_written += size; |
454c407e TZ |
149 | return 0; |
150 | } | |
151 | ||
cd17a9b5 AH |
152 | static int perf_event__repipe_synth(struct perf_tool *tool, |
153 | union perf_event *event) | |
154 | { | |
155 | struct perf_inject *inject = container_of(tool, struct perf_inject, | |
156 | tool); | |
157 | ||
158 | return output_bytes(inject, event, event->header.size); | |
159 | } | |
160 | ||
d704ebda ACM |
161 | static int perf_event__repipe_oe_synth(struct perf_tool *tool, |
162 | union perf_event *event, | |
163 | struct ordered_events *oe __maybe_unused) | |
164 | { | |
165 | return perf_event__repipe_synth(tool, event); | |
166 | } | |
167 | ||
e12b202f | 168 | #ifdef HAVE_JITDUMP |
9b07e27f SE |
169 | static int perf_event__drop_oe(struct perf_tool *tool __maybe_unused, |
170 | union perf_event *event __maybe_unused, | |
171 | struct ordered_events *oe __maybe_unused) | |
172 | { | |
173 | return 0; | |
174 | } | |
175 | #endif | |
176 | ||
89f1688a JO |
177 | static int perf_event__repipe_op2_synth(struct perf_session *session, |
178 | union perf_event *event) | |
743eb868 | 179 | { |
89f1688a | 180 | return perf_event__repipe_synth(session->tool, event); |
743eb868 ACM |
181 | } |
182 | ||
2946eced NK |
183 | static int perf_event__repipe_op4_synth(struct perf_session *session, |
184 | union perf_event *event, | |
2292083f AB |
185 | u64 data __maybe_unused, |
186 | const char *str __maybe_unused) | |
2946eced NK |
187 | { |
188 | return perf_event__repipe_synth(session->tool, event); | |
189 | } | |
190 | ||
47c3d109 AH |
191 | static int perf_event__repipe_attr(struct perf_tool *tool, |
192 | union perf_event *event, | |
63503dba | 193 | struct evlist **pevlist) |
10d0f086 | 194 | { |
89c97d93 AH |
195 | struct perf_inject *inject = container_of(tool, struct perf_inject, |
196 | tool); | |
1a1ed1ba | 197 | int ret; |
47c3d109 AH |
198 | |
199 | ret = perf_event__process_attr(tool, event, pevlist); | |
1a1ed1ba SE |
200 | if (ret) |
201 | return ret; | |
202 | ||
fea20d66 | 203 | if (!inject->is_pipe) |
89c97d93 AH |
204 | return 0; |
205 | ||
47c3d109 | 206 | return perf_event__repipe_synth(tool, event); |
10d0f086 ACM |
207 | } |
208 | ||
2946eced NK |
209 | static int perf_event__repipe_event_update(struct perf_tool *tool, |
210 | union perf_event *event, | |
211 | struct evlist **pevlist __maybe_unused) | |
212 | { | |
213 | return perf_event__repipe_synth(tool, event); | |
214 | } | |
215 | ||
e31f0d01 AH |
216 | #ifdef HAVE_AUXTRACE_SUPPORT |
217 | ||
1746212d | 218 | static int copy_bytes(struct perf_inject *inject, struct perf_data *data, off_t size) |
e31f0d01 AH |
219 | { |
220 | char buf[4096]; | |
221 | ssize_t ssz; | |
222 | int ret; | |
223 | ||
224 | while (size > 0) { | |
1746212d | 225 | ssz = perf_data__read(data, buf, min(size, (off_t)sizeof(buf))); |
e31f0d01 AH |
226 | if (ssz < 0) |
227 | return -errno; | |
228 | ret = output_bytes(inject, buf, ssz); | |
229 | if (ret) | |
230 | return ret; | |
231 | size -= ssz; | |
232 | } | |
233 | ||
234 | return 0; | |
235 | } | |
236 | ||
7336555a JO |
237 | static s64 perf_event__repipe_auxtrace(struct perf_session *session, |
238 | union perf_event *event) | |
cd17a9b5 | 239 | { |
7336555a | 240 | struct perf_tool *tool = session->tool; |
cd17a9b5 AH |
241 | struct perf_inject *inject = container_of(tool, struct perf_inject, |
242 | tool); | |
243 | int ret; | |
244 | ||
cd10b289 AH |
245 | inject->have_auxtrace = true; |
246 | ||
99fa2984 AH |
247 | if (!inject->output.is_pipe) { |
248 | off_t offset; | |
249 | ||
eae8ad80 | 250 | offset = lseek(inject->output.file.fd, 0, SEEK_CUR); |
99fa2984 AH |
251 | if (offset == -1) |
252 | return -errno; | |
253 | ret = auxtrace_index__auxtrace_event(&session->auxtrace_index, | |
254 | event, offset); | |
255 | if (ret < 0) | |
256 | return ret; | |
257 | } | |
258 | ||
8ceb41d7 | 259 | if (perf_data__is_pipe(session->data) || !session->one_mmap) { |
cd17a9b5 AH |
260 | ret = output_bytes(inject, event, event->header.size); |
261 | if (ret < 0) | |
262 | return ret; | |
1746212d | 263 | ret = copy_bytes(inject, session->data, |
cd17a9b5 AH |
264 | event->auxtrace.size); |
265 | } else { | |
266 | ret = output_bytes(inject, event, | |
267 | event->header.size + event->auxtrace.size); | |
268 | } | |
269 | if (ret < 0) | |
270 | return ret; | |
271 | ||
272 | return event->auxtrace.size; | |
273 | } | |
274 | ||
e31f0d01 AH |
275 | #else |
276 | ||
277 | static s64 | |
7336555a JO |
278 | perf_event__repipe_auxtrace(struct perf_session *session __maybe_unused, |
279 | union perf_event *event __maybe_unused) | |
e31f0d01 AH |
280 | { |
281 | pr_err("AUX area tracing not supported\n"); | |
282 | return -EINVAL; | |
283 | } | |
284 | ||
285 | #endif | |
286 | ||
45694aa7 | 287 | static int perf_event__repipe(struct perf_tool *tool, |
d20deb64 | 288 | union perf_event *event, |
1d037ca1 | 289 | struct perf_sample *sample __maybe_unused, |
63c2c9f8 | 290 | struct machine *machine __maybe_unused) |
640c03ce | 291 | { |
63c2c9f8 | 292 | return perf_event__repipe_synth(tool, event); |
640c03ce ACM |
293 | } |
294 | ||
f56fb986 AH |
295 | static int perf_event__drop(struct perf_tool *tool __maybe_unused, |
296 | union perf_event *event __maybe_unused, | |
297 | struct perf_sample *sample __maybe_unused, | |
298 | struct machine *machine __maybe_unused) | |
299 | { | |
300 | return 0; | |
301 | } | |
302 | ||
73117308 AH |
303 | static int perf_event__drop_aux(struct perf_tool *tool, |
304 | union perf_event *event __maybe_unused, | |
305 | struct perf_sample *sample, | |
306 | struct machine *machine __maybe_unused) | |
307 | { | |
308 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
309 | ||
310 | if (!inject->aux_id) | |
311 | inject->aux_id = sample->id; | |
312 | ||
313 | return 0; | |
314 | } | |
315 | ||
ba2675bf AH |
316 | static union perf_event * |
317 | perf_inject__cut_auxtrace_sample(struct perf_inject *inject, | |
318 | union perf_event *event, | |
319 | struct perf_sample *sample) | |
320 | { | |
321 | size_t sz1 = sample->aux_sample.data - (void *)event; | |
322 | size_t sz2 = event->header.size - sample->aux_sample.size - sz1; | |
d3944f0e | 323 | union perf_event *ev; |
ba2675bf | 324 | |
d3944f0e IR |
325 | if (inject->event_copy == NULL) { |
326 | inject->event_copy = malloc(PERF_SAMPLE_MAX_SIZE); | |
327 | if (!inject->event_copy) | |
328 | return ERR_PTR(-ENOMEM); | |
329 | } | |
330 | ev = (union perf_event *)inject->event_copy; | |
ba2675bf AH |
331 | if (sz1 > event->header.size || sz2 > event->header.size || |
332 | sz1 + sz2 > event->header.size || | |
333 | sz1 < sizeof(struct perf_event_header) + sizeof(u64)) | |
334 | return event; | |
335 | ||
336 | memcpy(ev, event, sz1); | |
337 | memcpy((void *)ev + sz1, (void *)event + event->header.size - sz2, sz2); | |
338 | ev->header.size = sz1 + sz2; | |
339 | ((u64 *)((void *)ev + sz1))[-1] = 0; | |
340 | ||
341 | return ev; | |
342 | } | |
343 | ||
26a031e1 AV |
344 | typedef int (*inject_handler)(struct perf_tool *tool, |
345 | union perf_event *event, | |
346 | struct perf_sample *sample, | |
32dcd021 | 347 | struct evsel *evsel, |
26a031e1 AV |
348 | struct machine *machine); |
349 | ||
45694aa7 | 350 | static int perf_event__repipe_sample(struct perf_tool *tool, |
d20deb64 | 351 | union perf_event *event, |
26a031e1 | 352 | struct perf_sample *sample, |
32dcd021 | 353 | struct evsel *evsel, |
26a031e1 | 354 | struct machine *machine) |
9e69c210 | 355 | { |
ba2675bf AH |
356 | struct perf_inject *inject = container_of(tool, struct perf_inject, |
357 | tool); | |
358 | ||
40978e9b | 359 | if (evsel && evsel->handler) { |
744a9719 | 360 | inject_handler f = evsel->handler; |
26a031e1 AV |
361 | return f(tool, event, sample, evsel, machine); |
362 | } | |
363 | ||
54a3cf59 AV |
364 | build_id__mark_dso_hit(tool, event, sample, evsel, machine); |
365 | ||
d3944f0e | 366 | if (inject->itrace_synth_opts.set && sample->aux_sample.size) { |
ba2675bf | 367 | event = perf_inject__cut_auxtrace_sample(inject, event, sample); |
d3944f0e IR |
368 | if (IS_ERR(event)) |
369 | return PTR_ERR(event); | |
370 | } | |
ba2675bf | 371 | |
63c2c9f8 | 372 | return perf_event__repipe_synth(tool, event); |
9e69c210 ACM |
373 | } |
374 | ||
45694aa7 | 375 | static int perf_event__repipe_mmap(struct perf_tool *tool, |
d20deb64 | 376 | union perf_event *event, |
8115d60c | 377 | struct perf_sample *sample, |
743eb868 | 378 | struct machine *machine) |
454c407e TZ |
379 | { |
380 | int err; | |
381 | ||
45694aa7 ACM |
382 | err = perf_event__process_mmap(tool, event, sample, machine); |
383 | perf_event__repipe(tool, event, sample, machine); | |
454c407e TZ |
384 | |
385 | return err; | |
386 | } | |
387 | ||
e12b202f | 388 | #ifdef HAVE_JITDUMP |
9b07e27f SE |
389 | static int perf_event__jit_repipe_mmap(struct perf_tool *tool, |
390 | union perf_event *event, | |
391 | struct perf_sample *sample, | |
392 | struct machine *machine) | |
393 | { | |
394 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
395 | u64 n = 0; | |
570735b3 | 396 | int ret; |
9b07e27f SE |
397 | |
398 | /* | |
399 | * if jit marker, then inject jit mmaps and generate ELF images | |
400 | */ | |
570735b3 | 401 | ret = jit_process(inject->session, &inject->output, machine, |
67dec926 | 402 | event->mmap.filename, event->mmap.pid, event->mmap.tid, &n); |
570735b3 AH |
403 | if (ret < 0) |
404 | return ret; | |
405 | if (ret) { | |
9b07e27f SE |
406 | inject->bytes_written += n; |
407 | return 0; | |
408 | } | |
409 | return perf_event__repipe_mmap(tool, event, sample, machine); | |
410 | } | |
411 | #endif | |
412 | ||
27c9c342 NK |
413 | static struct dso *findnew_dso(int pid, int tid, const char *filename, |
414 | struct dso_id *id, struct machine *machine) | |
415 | { | |
416 | struct thread *thread; | |
417 | struct nsinfo *nsi = NULL; | |
418 | struct nsinfo *nnsi; | |
419 | struct dso *dso; | |
420 | bool vdso; | |
421 | ||
422 | thread = machine__findnew_thread(machine, pid, tid); | |
423 | if (thread == NULL) { | |
424 | pr_err("cannot find or create a task %d/%d.\n", tid, pid); | |
425 | return NULL; | |
426 | } | |
427 | ||
428 | vdso = is_vdso_map(filename); | |
ee84a303 | 429 | nsi = nsinfo__get(thread__nsinfo(thread)); |
27c9c342 NK |
430 | |
431 | if (vdso) { | |
432 | /* The vdso maps are always on the host and not the | |
433 | * container. Ensure that we don't use setns to look | |
434 | * them up. | |
435 | */ | |
436 | nnsi = nsinfo__copy(nsi); | |
437 | if (nnsi) { | |
438 | nsinfo__put(nsi); | |
bcaf0a97 | 439 | nsinfo__clear_need_setns(nnsi); |
27c9c342 NK |
440 | nsi = nnsi; |
441 | } | |
442 | dso = machine__findnew_vdso(machine, thread); | |
443 | } else { | |
444 | dso = machine__findnew_dso_id(machine, filename, id); | |
445 | } | |
446 | ||
0967ebff | 447 | if (dso) { |
e54dea69 | 448 | mutex_lock(&dso->lock); |
0967ebff | 449 | nsinfo__put(dso->nsinfo); |
27c9c342 | 450 | dso->nsinfo = nsi; |
e54dea69 | 451 | mutex_unlock(&dso->lock); |
0967ebff | 452 | } else |
27c9c342 NK |
453 | nsinfo__put(nsi); |
454 | ||
455 | thread__put(thread); | |
456 | return dso; | |
457 | } | |
458 | ||
459 | static int perf_event__repipe_buildid_mmap(struct perf_tool *tool, | |
460 | union perf_event *event, | |
461 | struct perf_sample *sample, | |
462 | struct machine *machine) | |
463 | { | |
464 | struct dso *dso; | |
465 | ||
466 | dso = findnew_dso(event->mmap.pid, event->mmap.tid, | |
467 | event->mmap.filename, NULL, machine); | |
468 | ||
469 | if (dso && !dso->hit) { | |
470 | dso->hit = 1; | |
471 | dso__inject_build_id(dso, tool, machine, sample->cpumode, 0); | |
27c9c342 | 472 | } |
0c3f7b38 | 473 | dso__put(dso); |
27c9c342 NK |
474 | |
475 | return perf_event__repipe(tool, event, sample, machine); | |
476 | } | |
477 | ||
5c5e854b SE |
478 | static int perf_event__repipe_mmap2(struct perf_tool *tool, |
479 | union perf_event *event, | |
480 | struct perf_sample *sample, | |
481 | struct machine *machine) | |
482 | { | |
483 | int err; | |
484 | ||
485 | err = perf_event__process_mmap2(tool, event, sample, machine); | |
486 | perf_event__repipe(tool, event, sample, machine); | |
487 | ||
f7fc0d1c NK |
488 | if (event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) { |
489 | struct dso *dso; | |
490 | ||
491 | dso = findnew_dso(event->mmap2.pid, event->mmap2.tid, | |
492 | event->mmap2.filename, NULL, machine); | |
493 | if (dso) { | |
494 | /* mark it not to inject build-id */ | |
495 | dso->hit = 1; | |
496 | } | |
497 | dso__put(dso); | |
498 | } | |
499 | ||
5c5e854b SE |
500 | return err; |
501 | } | |
502 | ||
e12b202f | 503 | #ifdef HAVE_JITDUMP |
9b07e27f SE |
504 | static int perf_event__jit_repipe_mmap2(struct perf_tool *tool, |
505 | union perf_event *event, | |
506 | struct perf_sample *sample, | |
507 | struct machine *machine) | |
508 | { | |
509 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
510 | u64 n = 0; | |
570735b3 | 511 | int ret; |
9b07e27f SE |
512 | |
513 | /* | |
514 | * if jit marker, then inject jit mmaps and generate ELF images | |
515 | */ | |
570735b3 | 516 | ret = jit_process(inject->session, &inject->output, machine, |
67dec926 | 517 | event->mmap2.filename, event->mmap2.pid, event->mmap2.tid, &n); |
570735b3 AH |
518 | if (ret < 0) |
519 | return ret; | |
520 | if (ret) { | |
9b07e27f SE |
521 | inject->bytes_written += n; |
522 | return 0; | |
523 | } | |
524 | return perf_event__repipe_mmap2(tool, event, sample, machine); | |
525 | } | |
526 | #endif | |
527 | ||
27c9c342 NK |
528 | static int perf_event__repipe_buildid_mmap2(struct perf_tool *tool, |
529 | union perf_event *event, | |
530 | struct perf_sample *sample, | |
531 | struct machine *machine) | |
532 | { | |
533 | struct dso_id dso_id = { | |
534 | .maj = event->mmap2.maj, | |
535 | .min = event->mmap2.min, | |
536 | .ino = event->mmap2.ino, | |
537 | .ino_generation = event->mmap2.ino_generation, | |
538 | }; | |
539 | struct dso *dso; | |
540 | ||
f7fc0d1c NK |
541 | if (event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) { |
542 | /* cannot use dso_id since it'd have invalid info */ | |
543 | dso = findnew_dso(event->mmap2.pid, event->mmap2.tid, | |
544 | event->mmap2.filename, NULL, machine); | |
545 | if (dso) { | |
546 | /* mark it not to inject build-id */ | |
547 | dso->hit = 1; | |
548 | } | |
549 | dso__put(dso); | |
ce9f1c05 | 550 | perf_event__repipe(tool, event, sample, machine); |
f7fc0d1c NK |
551 | return 0; |
552 | } | |
553 | ||
27c9c342 NK |
554 | dso = findnew_dso(event->mmap2.pid, event->mmap2.tid, |
555 | event->mmap2.filename, &dso_id, machine); | |
556 | ||
557 | if (dso && !dso->hit) { | |
558 | dso->hit = 1; | |
559 | dso__inject_build_id(dso, tool, machine, sample->cpumode, | |
560 | event->mmap2.flags); | |
27c9c342 | 561 | } |
0c3f7b38 | 562 | dso__put(dso); |
27c9c342 NK |
563 | |
564 | perf_event__repipe(tool, event, sample, machine); | |
565 | ||
566 | return 0; | |
567 | } | |
568 | ||
f62d3f0f | 569 | static int perf_event__repipe_fork(struct perf_tool *tool, |
d20deb64 | 570 | union perf_event *event, |
8115d60c | 571 | struct perf_sample *sample, |
743eb868 | 572 | struct machine *machine) |
454c407e TZ |
573 | { |
574 | int err; | |
575 | ||
f62d3f0f | 576 | err = perf_event__process_fork(tool, event, sample, machine); |
45694aa7 | 577 | perf_event__repipe(tool, event, sample, machine); |
454c407e TZ |
578 | |
579 | return err; | |
580 | } | |
581 | ||
0f0aa5e0 AH |
582 | static int perf_event__repipe_comm(struct perf_tool *tool, |
583 | union perf_event *event, | |
584 | struct perf_sample *sample, | |
585 | struct machine *machine) | |
586 | { | |
587 | int err; | |
588 | ||
589 | err = perf_event__process_comm(tool, event, sample, machine); | |
590 | perf_event__repipe(tool, event, sample, machine); | |
591 | ||
592 | return err; | |
593 | } | |
594 | ||
f3b3614a HB |
595 | static int perf_event__repipe_namespaces(struct perf_tool *tool, |
596 | union perf_event *event, | |
597 | struct perf_sample *sample, | |
598 | struct machine *machine) | |
599 | { | |
600 | int err = perf_event__process_namespaces(tool, event, sample, machine); | |
601 | ||
602 | perf_event__repipe(tool, event, sample, machine); | |
603 | ||
604 | return err; | |
605 | } | |
606 | ||
0f0aa5e0 AH |
607 | static int perf_event__repipe_exit(struct perf_tool *tool, |
608 | union perf_event *event, | |
609 | struct perf_sample *sample, | |
610 | struct machine *machine) | |
611 | { | |
612 | int err; | |
613 | ||
614 | err = perf_event__process_exit(tool, event, sample, machine); | |
615 | perf_event__repipe(tool, event, sample, machine); | |
616 | ||
617 | return err; | |
618 | } | |
619 | ||
378ef0f5 | 620 | #ifdef HAVE_LIBTRACEEVENT |
89f1688a JO |
621 | static int perf_event__repipe_tracing_data(struct perf_session *session, |
622 | union perf_event *event) | |
454c407e | 623 | { |
89f1688a | 624 | perf_event__repipe_synth(session->tool, event); |
454c407e | 625 | |
f0ac5b85 | 626 | return perf_event__process_tracing_data(session, event); |
454c407e | 627 | } |
378ef0f5 | 628 | #endif |
454c407e | 629 | |
c824c433 | 630 | static int dso__read_build_id(struct dso *dso) |
454c407e | 631 | { |
336c95b2 NK |
632 | struct nscookie nsc; |
633 | ||
c824c433 | 634 | if (dso->has_build_id) |
090f7204 | 635 | return 0; |
454c407e | 636 | |
e54dea69 | 637 | mutex_lock(&dso->lock); |
336c95b2 | 638 | nsinfo__mountns_enter(dso->nsinfo, &nsc); |
f766819c | 639 | if (filename__read_build_id(dso->long_name, &dso->bid) > 0) |
c824c433 | 640 | dso->has_build_id = true; |
75d48c56 | 641 | else if (dso->nsinfo) { |
7031edac | 642 | char *new_name = dso__filename_with_chroot(dso, dso->long_name); |
75d48c56 | 643 | |
75d48c56 NK |
644 | if (new_name && filename__read_build_id(new_name, &dso->bid) > 0) |
645 | dso->has_build_id = true; | |
646 | free(new_name); | |
647 | } | |
336c95b2 | 648 | nsinfo__mountns_exit(&nsc); |
e54dea69 | 649 | mutex_unlock(&dso->lock); |
454c407e | 650 | |
336c95b2 | 651 | return dso->has_build_id ? 0 : -1; |
090f7204 | 652 | } |
454c407e | 653 | |
8012243e RS |
654 | static struct strlist *perf_inject__parse_known_build_ids( |
655 | const char *known_build_ids_string) | |
656 | { | |
657 | struct str_node *pos, *tmp; | |
658 | struct strlist *known_build_ids; | |
659 | int bid_len; | |
660 | ||
661 | known_build_ids = strlist__new(known_build_ids_string, NULL); | |
662 | if (known_build_ids == NULL) | |
663 | return NULL; | |
664 | strlist__for_each_entry_safe(pos, tmp, known_build_ids) { | |
665 | const char *build_id, *dso_name; | |
666 | ||
667 | build_id = skip_spaces(pos->s); | |
668 | dso_name = strchr(build_id, ' '); | |
669 | if (dso_name == NULL) { | |
670 | strlist__remove(known_build_ids, pos); | |
671 | continue; | |
672 | } | |
673 | bid_len = dso_name - pos->s; | |
674 | dso_name = skip_spaces(dso_name); | |
675 | if (bid_len % 2 != 0 || bid_len >= SBUILD_ID_SIZE) { | |
676 | strlist__remove(known_build_ids, pos); | |
677 | continue; | |
678 | } | |
679 | for (int ix = 0; 2 * ix + 1 < bid_len; ++ix) { | |
680 | if (!isxdigit(build_id[2 * ix]) || | |
681 | !isxdigit(build_id[2 * ix + 1])) { | |
682 | strlist__remove(known_build_ids, pos); | |
683 | break; | |
684 | } | |
685 | } | |
686 | } | |
687 | return known_build_ids; | |
688 | } | |
689 | ||
690 | static bool perf_inject__lookup_known_build_id(struct perf_inject *inject, | |
691 | struct dso *dso) | |
692 | { | |
693 | struct str_node *pos; | |
694 | int bid_len; | |
695 | ||
696 | strlist__for_each_entry(pos, inject->known_build_ids) { | |
697 | const char *build_id, *dso_name; | |
698 | ||
699 | build_id = skip_spaces(pos->s); | |
700 | dso_name = strchr(build_id, ' '); | |
701 | bid_len = dso_name - pos->s; | |
702 | dso_name = skip_spaces(dso_name); | |
703 | if (strcmp(dso->long_name, dso_name)) | |
704 | continue; | |
705 | for (int ix = 0; 2 * ix + 1 < bid_len; ++ix) { | |
706 | dso->bid.data[ix] = (hex(build_id[2 * ix]) << 4 | | |
707 | hex(build_id[2 * ix + 1])); | |
708 | } | |
709 | dso->bid.size = bid_len / 2; | |
710 | dso->has_build_id = 1; | |
711 | return true; | |
712 | } | |
713 | return false; | |
714 | } | |
715 | ||
c824c433 | 716 | static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool, |
e7b60c5a | 717 | struct machine *machine, u8 cpumode, u32 flags) |
090f7204 | 718 | { |
8012243e RS |
719 | struct perf_inject *inject = container_of(tool, struct perf_inject, |
720 | tool); | |
090f7204 | 721 | int err; |
454c407e | 722 | |
e7b60c5a NK |
723 | if (is_anon_memory(dso->long_name) || flags & MAP_HUGETLB) |
724 | return 0; | |
725 | if (is_no_dso_memory(dso->long_name)) | |
726 | return 0; | |
727 | ||
8012243e RS |
728 | if (inject->known_build_ids != NULL && |
729 | perf_inject__lookup_known_build_id(inject, dso)) | |
730 | return 1; | |
731 | ||
c824c433 ACM |
732 | if (dso__read_build_id(dso) < 0) { |
733 | pr_debug("no build_id found for %s\n", dso->long_name); | |
090f7204 ACM |
734 | return -1; |
735 | } | |
454c407e | 736 | |
e7b60c5a NK |
737 | err = perf_event__synthesize_build_id(tool, dso, cpumode, |
738 | perf_event__repipe, machine); | |
090f7204 | 739 | if (err) { |
c824c433 | 740 | pr_err("Can't synthesize build_id event for %s\n", dso->long_name); |
454c407e TZ |
741 | return -1; |
742 | } | |
743 | ||
744 | return 0; | |
745 | } | |
746 | ||
0bf02a0d NK |
747 | int perf_event__inject_buildid(struct perf_tool *tool, union perf_event *event, |
748 | struct perf_sample *sample, | |
749 | struct evsel *evsel __maybe_unused, | |
750 | struct machine *machine) | |
454c407e TZ |
751 | { |
752 | struct addr_location al; | |
753 | struct thread *thread; | |
454c407e | 754 | |
0dd5041c | 755 | addr_location__init(&al); |
13ce34df | 756 | thread = machine__findnew_thread(machine, sample->pid, sample->tid); |
454c407e TZ |
757 | if (thread == NULL) { |
758 | pr_err("problem processing %d event, skipping it.\n", | |
759 | event->header.type); | |
454c407e TZ |
760 | goto repipe; |
761 | } | |
762 | ||
71a84b5a | 763 | if (thread__find_map(thread, sample->cpumode, sample->ip, &al)) { |
63df0e4b IR |
764 | struct dso *dso = map__dso(al.map); |
765 | ||
766 | if (!dso->hit) { | |
767 | dso->hit = 1; | |
768 | dso__inject_build_id(dso, tool, machine, | |
ddee3f2b | 769 | sample->cpumode, map__flags(al.map)); |
454c407e TZ |
770 | } |
771 | } | |
772 | ||
b91fc39f | 773 | thread__put(thread); |
454c407e | 774 | repipe: |
45694aa7 | 775 | perf_event__repipe(tool, event, sample, machine); |
0dd5041c | 776 | addr_location__exit(&al); |
090f7204 | 777 | return 0; |
454c407e TZ |
778 | } |
779 | ||
26a031e1 AV |
780 | static int perf_inject__sched_process_exit(struct perf_tool *tool, |
781 | union perf_event *event __maybe_unused, | |
782 | struct perf_sample *sample, | |
32dcd021 | 783 | struct evsel *evsel __maybe_unused, |
26a031e1 AV |
784 | struct machine *machine __maybe_unused) |
785 | { | |
786 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
787 | struct event_entry *ent; | |
788 | ||
789 | list_for_each_entry(ent, &inject->samples, node) { | |
790 | if (sample->tid == ent->tid) { | |
791 | list_del_init(&ent->node); | |
792 | free(ent); | |
793 | break; | |
794 | } | |
795 | } | |
796 | ||
797 | return 0; | |
798 | } | |
799 | ||
800 | static int perf_inject__sched_switch(struct perf_tool *tool, | |
801 | union perf_event *event, | |
802 | struct perf_sample *sample, | |
32dcd021 | 803 | struct evsel *evsel, |
26a031e1 AV |
804 | struct machine *machine) |
805 | { | |
806 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
807 | struct event_entry *ent; | |
808 | ||
809 | perf_inject__sched_process_exit(tool, event, sample, evsel, machine); | |
810 | ||
811 | ent = malloc(event->header.size + sizeof(struct event_entry)); | |
812 | if (ent == NULL) { | |
813 | color_fprintf(stderr, PERF_COLOR_RED, | |
814 | "Not enough memory to process sched switch event!"); | |
815 | return -1; | |
816 | } | |
817 | ||
818 | ent->tid = sample->tid; | |
819 | memcpy(&ent->event, event, event->header.size); | |
820 | list_add(&ent->node, &inject->samples); | |
821 | return 0; | |
822 | } | |
823 | ||
378ef0f5 | 824 | #ifdef HAVE_LIBTRACEEVENT |
26a031e1 AV |
825 | static int perf_inject__sched_stat(struct perf_tool *tool, |
826 | union perf_event *event __maybe_unused, | |
827 | struct perf_sample *sample, | |
32dcd021 | 828 | struct evsel *evsel, |
26a031e1 AV |
829 | struct machine *machine) |
830 | { | |
831 | struct event_entry *ent; | |
832 | union perf_event *event_sw; | |
833 | struct perf_sample sample_sw; | |
834 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
efc0cdc9 | 835 | u32 pid = evsel__intval(evsel, sample, "pid"); |
26a031e1 AV |
836 | |
837 | list_for_each_entry(ent, &inject->samples, node) { | |
838 | if (pid == ent->tid) | |
839 | goto found; | |
840 | } | |
841 | ||
842 | return 0; | |
843 | found: | |
844 | event_sw = &ent->event[0]; | |
6b6017a2 | 845 | evsel__parse_sample(evsel, event_sw, &sample_sw); |
26a031e1 AV |
846 | |
847 | sample_sw.period = sample->period; | |
848 | sample_sw.time = sample->time; | |
1fc632ce JO |
849 | perf_event__synthesize_sample(event_sw, evsel->core.attr.sample_type, |
850 | evsel->core.attr.read_format, &sample_sw); | |
54a3cf59 | 851 | build_id__mark_dso_hit(tool, event_sw, &sample_sw, evsel, machine); |
26a031e1 AV |
852 | return perf_event__repipe(tool, event_sw, &sample_sw, machine); |
853 | } | |
378ef0f5 | 854 | #endif |
26a031e1 | 855 | |
97406a7e AH |
856 | static struct guest_vcpu *guest_session__vcpu(struct guest_session *gs, u32 vcpu) |
857 | { | |
858 | if (realloc_array_as_needed(gs->vcpu, gs->vcpu_cnt, vcpu, NULL)) | |
859 | return NULL; | |
860 | return &gs->vcpu[vcpu]; | |
861 | } | |
862 | ||
863 | static int guest_session__output_bytes(struct guest_session *gs, void *buf, size_t sz) | |
864 | { | |
865 | ssize_t ret = writen(gs->tmp_fd, buf, sz); | |
866 | ||
867 | return ret < 0 ? ret : 0; | |
868 | } | |
869 | ||
870 | static int guest_session__repipe(struct perf_tool *tool, | |
871 | union perf_event *event, | |
872 | struct perf_sample *sample __maybe_unused, | |
873 | struct machine *machine __maybe_unused) | |
874 | { | |
875 | struct guest_session *gs = container_of(tool, struct guest_session, tool); | |
876 | ||
877 | return guest_session__output_bytes(gs, event, event->header.size); | |
878 | } | |
879 | ||
880 | static int guest_session__map_tid(struct guest_session *gs, u32 tid, u32 vcpu) | |
881 | { | |
882 | struct guest_tid *guest_tid = zalloc(sizeof(*guest_tid)); | |
883 | int hash; | |
884 | ||
885 | if (!guest_tid) | |
886 | return -ENOMEM; | |
887 | ||
888 | guest_tid->tid = tid; | |
889 | guest_tid->vcpu = vcpu; | |
890 | hash = hash_32(guest_tid->tid, PERF_EVLIST__HLIST_BITS); | |
891 | hlist_add_head(&guest_tid->node, &gs->tids[hash]); | |
892 | ||
893 | return 0; | |
894 | } | |
895 | ||
896 | static int host_peek_vm_comms_cb(struct perf_session *session __maybe_unused, | |
897 | union perf_event *event, | |
898 | u64 offset __maybe_unused, void *data) | |
899 | { | |
900 | struct guest_session *gs = data; | |
901 | unsigned int vcpu; | |
902 | struct guest_vcpu *guest_vcpu; | |
903 | int ret; | |
904 | ||
905 | if (event->header.type != PERF_RECORD_COMM || | |
906 | event->comm.pid != gs->machine_pid) | |
907 | return 0; | |
908 | ||
909 | /* | |
910 | * QEMU option -name debug-threads=on, causes thread names formatted as | |
911 | * below, although it is not an ABI. Also libvirt seems to use this by | |
912 | * default. Here we rely on it to tell us which thread is which VCPU. | |
913 | */ | |
914 | ret = sscanf(event->comm.comm, "CPU %u/KVM", &vcpu); | |
915 | if (ret <= 0) | |
916 | return ret; | |
917 | pr_debug("Found VCPU: tid %u comm %s vcpu %u\n", | |
918 | event->comm.tid, event->comm.comm, vcpu); | |
919 | if (vcpu > INT_MAX) { | |
920 | pr_err("Invalid VCPU %u\n", vcpu); | |
921 | return -EINVAL; | |
922 | } | |
923 | guest_vcpu = guest_session__vcpu(gs, vcpu); | |
924 | if (!guest_vcpu) | |
925 | return -ENOMEM; | |
926 | if (guest_vcpu->tid && guest_vcpu->tid != event->comm.tid) { | |
927 | pr_err("Fatal error: Two threads found with the same VCPU\n"); | |
928 | return -EINVAL; | |
929 | } | |
930 | guest_vcpu->tid = event->comm.tid; | |
931 | ||
932 | return guest_session__map_tid(gs, event->comm.tid, vcpu); | |
933 | } | |
934 | ||
935 | static int host_peek_vm_comms(struct perf_session *session, struct guest_session *gs) | |
936 | { | |
937 | return perf_session__peek_events(session, session->header.data_offset, | |
938 | session->header.data_size, | |
939 | host_peek_vm_comms_cb, gs); | |
940 | } | |
941 | ||
942 | static bool evlist__is_id_used(struct evlist *evlist, u64 id) | |
943 | { | |
944 | return evlist__id2sid(evlist, id); | |
945 | } | |
946 | ||
947 | static u64 guest_session__allocate_new_id(struct guest_session *gs, struct evlist *host_evlist) | |
948 | { | |
949 | do { | |
950 | gs->highest_id += 1; | |
951 | } while (!gs->highest_id || evlist__is_id_used(host_evlist, gs->highest_id)); | |
952 | ||
953 | return gs->highest_id; | |
954 | } | |
955 | ||
956 | static int guest_session__map_id(struct guest_session *gs, u64 id, u64 host_id, u32 vcpu) | |
957 | { | |
958 | struct guest_id *guest_id = zalloc(sizeof(*guest_id)); | |
959 | int hash; | |
960 | ||
961 | if (!guest_id) | |
962 | return -ENOMEM; | |
963 | ||
964 | guest_id->id = id; | |
965 | guest_id->host_id = host_id; | |
966 | guest_id->vcpu = vcpu; | |
967 | hash = hash_64(guest_id->id, PERF_EVLIST__HLIST_BITS); | |
968 | hlist_add_head(&guest_id->node, &gs->heads[hash]); | |
969 | ||
970 | return 0; | |
971 | } | |
972 | ||
973 | static u64 evlist__find_highest_id(struct evlist *evlist) | |
974 | { | |
975 | struct evsel *evsel; | |
976 | u64 highest_id = 1; | |
977 | ||
978 | evlist__for_each_entry(evlist, evsel) { | |
979 | u32 j; | |
980 | ||
981 | for (j = 0; j < evsel->core.ids; j++) { | |
982 | u64 id = evsel->core.id[j]; | |
983 | ||
984 | if (id > highest_id) | |
985 | highest_id = id; | |
986 | } | |
987 | } | |
988 | ||
989 | return highest_id; | |
990 | } | |
991 | ||
992 | static int guest_session__map_ids(struct guest_session *gs, struct evlist *host_evlist) | |
993 | { | |
994 | struct evlist *evlist = gs->session->evlist; | |
995 | struct evsel *evsel; | |
996 | int ret; | |
997 | ||
998 | evlist__for_each_entry(evlist, evsel) { | |
999 | u32 j; | |
1000 | ||
1001 | for (j = 0; j < evsel->core.ids; j++) { | |
1002 | struct perf_sample_id *sid; | |
1003 | u64 host_id; | |
1004 | u64 id; | |
1005 | ||
1006 | id = evsel->core.id[j]; | |
1007 | sid = evlist__id2sid(evlist, id); | |
1008 | if (!sid || sid->cpu.cpu == -1) | |
1009 | continue; | |
1010 | host_id = guest_session__allocate_new_id(gs, host_evlist); | |
1011 | ret = guest_session__map_id(gs, id, host_id, sid->cpu.cpu); | |
1012 | if (ret) | |
1013 | return ret; | |
1014 | } | |
1015 | } | |
1016 | ||
1017 | return 0; | |
1018 | } | |
1019 | ||
1020 | static struct guest_id *guest_session__lookup_id(struct guest_session *gs, u64 id) | |
1021 | { | |
1022 | struct hlist_head *head; | |
1023 | struct guest_id *guest_id; | |
1024 | int hash; | |
1025 | ||
1026 | hash = hash_64(id, PERF_EVLIST__HLIST_BITS); | |
1027 | head = &gs->heads[hash]; | |
1028 | ||
1029 | hlist_for_each_entry(guest_id, head, node) | |
1030 | if (guest_id->id == id) | |
1031 | return guest_id; | |
1032 | ||
1033 | return NULL; | |
1034 | } | |
1035 | ||
1036 | static int process_attr(struct perf_tool *tool, union perf_event *event, | |
1037 | struct perf_sample *sample __maybe_unused, | |
1038 | struct machine *machine __maybe_unused) | |
1039 | { | |
1040 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
1041 | ||
1042 | return perf_event__process_attr(tool, event, &inject->session->evlist); | |
1043 | } | |
1044 | ||
1045 | static int guest_session__add_attr(struct guest_session *gs, struct evsel *evsel) | |
1046 | { | |
1047 | struct perf_inject *inject = container_of(gs, struct perf_inject, guest_session); | |
1048 | struct perf_event_attr attr = evsel->core.attr; | |
1049 | u64 *id_array; | |
1050 | u32 *vcpu_array; | |
1051 | int ret = -ENOMEM; | |
1052 | u32 i; | |
1053 | ||
1054 | id_array = calloc(evsel->core.ids, sizeof(*id_array)); | |
1055 | if (!id_array) | |
1056 | return -ENOMEM; | |
1057 | ||
1058 | vcpu_array = calloc(evsel->core.ids, sizeof(*vcpu_array)); | |
1059 | if (!vcpu_array) | |
1060 | goto out; | |
1061 | ||
1062 | for (i = 0; i < evsel->core.ids; i++) { | |
1063 | u64 id = evsel->core.id[i]; | |
1064 | struct guest_id *guest_id = guest_session__lookup_id(gs, id); | |
1065 | ||
1066 | if (!guest_id) { | |
1067 | pr_err("Failed to find guest id %"PRIu64"\n", id); | |
1068 | ret = -EINVAL; | |
1069 | goto out; | |
1070 | } | |
1071 | id_array[i] = guest_id->host_id; | |
1072 | vcpu_array[i] = guest_id->vcpu; | |
1073 | } | |
1074 | ||
1075 | attr.sample_type |= PERF_SAMPLE_IDENTIFIER; | |
1076 | attr.exclude_host = 1; | |
1077 | attr.exclude_guest = 0; | |
1078 | ||
1079 | ret = perf_event__synthesize_attr(&inject->tool, &attr, evsel->core.ids, | |
1080 | id_array, process_attr); | |
1081 | if (ret) | |
1082 | pr_err("Failed to add guest attr.\n"); | |
1083 | ||
1084 | for (i = 0; i < evsel->core.ids; i++) { | |
1085 | struct perf_sample_id *sid; | |
1086 | u32 vcpu = vcpu_array[i]; | |
1087 | ||
1088 | sid = evlist__id2sid(inject->session->evlist, id_array[i]); | |
1089 | /* Guest event is per-thread from the host point of view */ | |
1090 | sid->cpu.cpu = -1; | |
1091 | sid->tid = gs->vcpu[vcpu].tid; | |
1092 | sid->machine_pid = gs->machine_pid; | |
1093 | sid->vcpu.cpu = vcpu; | |
1094 | } | |
1095 | out: | |
1096 | free(vcpu_array); | |
1097 | free(id_array); | |
1098 | return ret; | |
1099 | } | |
1100 | ||
1101 | static int guest_session__add_attrs(struct guest_session *gs) | |
1102 | { | |
1103 | struct evlist *evlist = gs->session->evlist; | |
1104 | struct evsel *evsel; | |
1105 | int ret; | |
1106 | ||
1107 | evlist__for_each_entry(evlist, evsel) { | |
1108 | ret = guest_session__add_attr(gs, evsel); | |
1109 | if (ret) | |
1110 | return ret; | |
1111 | } | |
1112 | ||
1113 | return 0; | |
1114 | } | |
1115 | ||
1116 | static int synthesize_id_index(struct perf_inject *inject, size_t new_cnt) | |
1117 | { | |
1118 | struct perf_session *session = inject->session; | |
1119 | struct evlist *evlist = session->evlist; | |
1120 | struct machine *machine = &session->machines.host; | |
1121 | size_t from = evlist->core.nr_entries - new_cnt; | |
1122 | ||
1123 | return __perf_event__synthesize_id_index(&inject->tool, perf_event__repipe, | |
1124 | evlist, machine, from); | |
1125 | } | |
1126 | ||
1127 | static struct guest_tid *guest_session__lookup_tid(struct guest_session *gs, u32 tid) | |
1128 | { | |
1129 | struct hlist_head *head; | |
1130 | struct guest_tid *guest_tid; | |
1131 | int hash; | |
1132 | ||
1133 | hash = hash_32(tid, PERF_EVLIST__HLIST_BITS); | |
1134 | head = &gs->tids[hash]; | |
1135 | ||
1136 | hlist_for_each_entry(guest_tid, head, node) | |
1137 | if (guest_tid->tid == tid) | |
1138 | return guest_tid; | |
1139 | ||
1140 | return NULL; | |
1141 | } | |
1142 | ||
1143 | static bool dso__is_in_kernel_space(struct dso *dso) | |
1144 | { | |
1145 | if (dso__is_vdso(dso)) | |
1146 | return false; | |
1147 | ||
1148 | return dso__is_kcore(dso) || | |
1149 | dso->kernel || | |
1150 | is_kernel_module(dso->long_name, PERF_RECORD_MISC_CPUMODE_UNKNOWN); | |
1151 | } | |
1152 | ||
1153 | static u64 evlist__first_id(struct evlist *evlist) | |
1154 | { | |
1155 | struct evsel *evsel; | |
1156 | ||
1157 | evlist__for_each_entry(evlist, evsel) { | |
1158 | if (evsel->core.ids) | |
1159 | return evsel->core.id[0]; | |
1160 | } | |
1161 | return 0; | |
1162 | } | |
1163 | ||
1164 | static int process_build_id(struct perf_tool *tool, | |
1165 | union perf_event *event, | |
1166 | struct perf_sample *sample __maybe_unused, | |
1167 | struct machine *machine __maybe_unused) | |
1168 | { | |
1169 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
1170 | ||
1171 | return perf_event__process_build_id(inject->session, event); | |
1172 | } | |
1173 | ||
1174 | static int synthesize_build_id(struct perf_inject *inject, struct dso *dso, pid_t machine_pid) | |
1175 | { | |
1176 | struct machine *machine = perf_session__findnew_machine(inject->session, machine_pid); | |
1177 | u8 cpumode = dso__is_in_kernel_space(dso) ? | |
1178 | PERF_RECORD_MISC_GUEST_KERNEL : | |
1179 | PERF_RECORD_MISC_GUEST_USER; | |
1180 | ||
1181 | if (!machine) | |
1182 | return -ENOMEM; | |
1183 | ||
1184 | dso->hit = 1; | |
1185 | ||
1186 | return perf_event__synthesize_build_id(&inject->tool, dso, cpumode, | |
1187 | process_build_id, machine); | |
1188 | } | |
1189 | ||
1190 | static int guest_session__add_build_ids(struct guest_session *gs) | |
1191 | { | |
1192 | struct perf_inject *inject = container_of(gs, struct perf_inject, guest_session); | |
1193 | struct machine *machine = &gs->session->machines.host; | |
1194 | struct dso *dso; | |
1195 | int ret; | |
1196 | ||
1197 | /* Build IDs will be put in the Build ID feature section */ | |
1198 | perf_header__set_feat(&inject->session->header, HEADER_BUILD_ID); | |
1199 | ||
1200 | dsos__for_each_with_build_id(dso, &machine->dsos.head) { | |
1201 | ret = synthesize_build_id(inject, dso, gs->machine_pid); | |
1202 | if (ret) | |
1203 | return ret; | |
1204 | } | |
1205 | ||
1206 | return 0; | |
1207 | } | |
1208 | ||
1209 | static int guest_session__ksymbol_event(struct perf_tool *tool, | |
1210 | union perf_event *event, | |
1211 | struct perf_sample *sample __maybe_unused, | |
1212 | struct machine *machine __maybe_unused) | |
1213 | { | |
1214 | struct guest_session *gs = container_of(tool, struct guest_session, tool); | |
1215 | ||
1216 | /* Only support out-of-line i.e. no BPF support */ | |
1217 | if (event->ksymbol.ksym_type != PERF_RECORD_KSYMBOL_TYPE_OOL) | |
1218 | return 0; | |
1219 | ||
1220 | return guest_session__output_bytes(gs, event, event->header.size); | |
1221 | } | |
1222 | ||
1223 | static int guest_session__start(struct guest_session *gs, const char *name, bool force) | |
1224 | { | |
1225 | char tmp_file_name[] = "/tmp/perf-inject-guest_session-XXXXXX"; | |
1226 | struct perf_session *session; | |
1227 | int ret; | |
1228 | ||
1229 | /* Only these events will be injected */ | |
1230 | gs->tool.mmap = guest_session__repipe; | |
1231 | gs->tool.mmap2 = guest_session__repipe; | |
1232 | gs->tool.comm = guest_session__repipe; | |
1233 | gs->tool.fork = guest_session__repipe; | |
1234 | gs->tool.exit = guest_session__repipe; | |
1235 | gs->tool.lost = guest_session__repipe; | |
1236 | gs->tool.context_switch = guest_session__repipe; | |
1237 | gs->tool.ksymbol = guest_session__ksymbol_event; | |
1238 | gs->tool.text_poke = guest_session__repipe; | |
1239 | /* | |
1240 | * Processing a build ID creates a struct dso with that build ID. Later, | |
1241 | * all guest dsos are iterated and the build IDs processed into the host | |
1242 | * session where they will be output to the Build ID feature section | |
1243 | * when the perf.data file header is written. | |
1244 | */ | |
1245 | gs->tool.build_id = perf_event__process_build_id; | |
1246 | /* Process the id index to know what VCPU an ID belongs to */ | |
1247 | gs->tool.id_index = perf_event__process_id_index; | |
1248 | ||
1249 | gs->tool.ordered_events = true; | |
1250 | gs->tool.ordering_requires_timestamps = true; | |
1251 | ||
1252 | gs->data.path = name; | |
1253 | gs->data.force = force; | |
1254 | gs->data.mode = PERF_DATA_MODE_READ; | |
1255 | ||
1256 | session = perf_session__new(&gs->data, &gs->tool); | |
1257 | if (IS_ERR(session)) | |
1258 | return PTR_ERR(session); | |
1259 | gs->session = session; | |
1260 | ||
1261 | /* | |
1262 | * Initial events have zero'd ID samples. Get default ID sample size | |
1263 | * used for removing them. | |
1264 | */ | |
1265 | gs->dflt_id_hdr_size = session->machines.host.id_hdr_size; | |
1266 | /* And default ID for adding back a host-compatible ID sample */ | |
1267 | gs->dflt_id = evlist__first_id(session->evlist); | |
1268 | if (!gs->dflt_id) { | |
1269 | pr_err("Guest data has no sample IDs"); | |
1270 | return -EINVAL; | |
1271 | } | |
1272 | ||
1273 | /* Temporary file for guest events */ | |
1274 | gs->tmp_file_name = strdup(tmp_file_name); | |
1275 | if (!gs->tmp_file_name) | |
1276 | return -ENOMEM; | |
1277 | gs->tmp_fd = mkstemp(gs->tmp_file_name); | |
1278 | if (gs->tmp_fd < 0) | |
1279 | return -errno; | |
1280 | ||
1281 | if (zstd_init(&gs->session->zstd_data, 0) < 0) | |
1282 | pr_warning("Guest session decompression initialization failed.\n"); | |
1283 | ||
1284 | /* | |
1285 | * perf does not support processing 2 sessions simultaneously, so output | |
1286 | * guest events to a temporary file. | |
1287 | */ | |
1288 | ret = perf_session__process_events(gs->session); | |
1289 | if (ret) | |
1290 | return ret; | |
1291 | ||
1292 | if (lseek(gs->tmp_fd, 0, SEEK_SET)) | |
1293 | return -errno; | |
1294 | ||
1295 | return 0; | |
1296 | } | |
1297 | ||
1298 | /* Free hlist nodes assuming hlist_node is the first member of hlist entries */ | |
1299 | static void free_hlist(struct hlist_head *heads, size_t hlist_sz) | |
1300 | { | |
1301 | struct hlist_node *pos, *n; | |
1302 | size_t i; | |
1303 | ||
1304 | for (i = 0; i < hlist_sz; ++i) { | |
1305 | hlist_for_each_safe(pos, n, &heads[i]) { | |
1306 | hlist_del(pos); | |
1307 | free(pos); | |
1308 | } | |
1309 | } | |
1310 | } | |
1311 | ||
1312 | static void guest_session__exit(struct guest_session *gs) | |
1313 | { | |
1314 | if (gs->session) { | |
1315 | perf_session__delete(gs->session); | |
1316 | free_hlist(gs->heads, PERF_EVLIST__HLIST_SIZE); | |
1317 | free_hlist(gs->tids, PERF_EVLIST__HLIST_SIZE); | |
1318 | } | |
1319 | if (gs->tmp_file_name) { | |
1320 | if (gs->tmp_fd >= 0) | |
1321 | close(gs->tmp_fd); | |
1322 | unlink(gs->tmp_file_name); | |
79b40a1b | 1323 | zfree(&gs->tmp_file_name); |
97406a7e | 1324 | } |
79b40a1b ACM |
1325 | zfree(&gs->vcpu); |
1326 | zfree(&gs->perf_data_file); | |
97406a7e AH |
1327 | } |
1328 | ||
1329 | static void get_tsc_conv(struct perf_tsc_conversion *tc, struct perf_record_time_conv *time_conv) | |
1330 | { | |
1331 | tc->time_shift = time_conv->time_shift; | |
1332 | tc->time_mult = time_conv->time_mult; | |
1333 | tc->time_zero = time_conv->time_zero; | |
1334 | tc->time_cycles = time_conv->time_cycles; | |
1335 | tc->time_mask = time_conv->time_mask; | |
1336 | tc->cap_user_time_zero = time_conv->cap_user_time_zero; | |
1337 | tc->cap_user_time_short = time_conv->cap_user_time_short; | |
1338 | } | |
1339 | ||
1340 | static void guest_session__get_tc(struct guest_session *gs) | |
1341 | { | |
1342 | struct perf_inject *inject = container_of(gs, struct perf_inject, guest_session); | |
1343 | ||
1344 | get_tsc_conv(&gs->host_tc, &inject->session->time_conv); | |
1345 | get_tsc_conv(&gs->guest_tc, &gs->session->time_conv); | |
1346 | } | |
1347 | ||
1348 | static void guest_session__convert_time(struct guest_session *gs, u64 guest_time, u64 *host_time) | |
1349 | { | |
1350 | u64 tsc; | |
1351 | ||
1352 | if (!guest_time) { | |
1353 | *host_time = 0; | |
1354 | return; | |
1355 | } | |
1356 | ||
1357 | if (gs->guest_tc.cap_user_time_zero) | |
1358 | tsc = perf_time_to_tsc(guest_time, &gs->guest_tc); | |
1359 | else | |
1360 | tsc = guest_time; | |
1361 | ||
1362 | /* | |
1363 | * This is the correct order of operations for x86 if the TSC Offset and | |
1364 | * Multiplier values are used. | |
1365 | */ | |
1366 | tsc -= gs->time_offset; | |
1367 | tsc /= gs->time_scale; | |
1368 | ||
1369 | if (gs->host_tc.cap_user_time_zero) | |
1370 | *host_time = tsc_to_perf_time(tsc, &gs->host_tc); | |
1371 | else | |
1372 | *host_time = tsc; | |
1373 | } | |
1374 | ||
1375 | static int guest_session__fetch(struct guest_session *gs) | |
1376 | { | |
892d00fb IR |
1377 | void *buf; |
1378 | struct perf_event_header *hdr; | |
97406a7e AH |
1379 | size_t hdr_sz = sizeof(*hdr); |
1380 | ssize_t ret; | |
1381 | ||
892d00fb IR |
1382 | buf = gs->ev.event_buf; |
1383 | if (!buf) { | |
1384 | buf = malloc(PERF_SAMPLE_MAX_SIZE); | |
1385 | if (!buf) | |
1386 | return -ENOMEM; | |
1387 | gs->ev.event_buf = buf; | |
1388 | } | |
1389 | hdr = buf; | |
97406a7e AH |
1390 | ret = readn(gs->tmp_fd, buf, hdr_sz); |
1391 | if (ret < 0) | |
1392 | return ret; | |
1393 | ||
1394 | if (!ret) { | |
1395 | /* Zero size means EOF */ | |
1396 | hdr->size = 0; | |
1397 | return 0; | |
1398 | } | |
1399 | ||
1400 | buf += hdr_sz; | |
1401 | ||
1402 | ret = readn(gs->tmp_fd, buf, hdr->size - hdr_sz); | |
1403 | if (ret < 0) | |
1404 | return ret; | |
1405 | ||
1406 | gs->ev.event = (union perf_event *)gs->ev.event_buf; | |
1407 | gs->ev.sample.time = 0; | |
1408 | ||
1409 | if (hdr->type >= PERF_RECORD_USER_TYPE_START) { | |
1410 | pr_err("Unexpected type fetching guest event"); | |
1411 | return 0; | |
1412 | } | |
1413 | ||
1414 | ret = evlist__parse_sample(gs->session->evlist, gs->ev.event, &gs->ev.sample); | |
1415 | if (ret) { | |
1416 | pr_err("Parse failed fetching guest event"); | |
1417 | return ret; | |
1418 | } | |
1419 | ||
1420 | if (!gs->have_tc) { | |
1421 | guest_session__get_tc(gs); | |
1422 | gs->have_tc = true; | |
1423 | } | |
1424 | ||
1425 | guest_session__convert_time(gs, gs->ev.sample.time, &gs->ev.sample.time); | |
1426 | ||
1427 | return 0; | |
1428 | } | |
1429 | ||
1430 | static int evlist__append_id_sample(struct evlist *evlist, union perf_event *ev, | |
1431 | const struct perf_sample *sample) | |
1432 | { | |
1433 | struct evsel *evsel; | |
1434 | void *array; | |
1435 | int ret; | |
1436 | ||
1437 | evsel = evlist__id2evsel(evlist, sample->id); | |
1438 | array = ev; | |
1439 | ||
1440 | if (!evsel) { | |
1441 | pr_err("No evsel for id %"PRIu64"\n", sample->id); | |
1442 | return -EINVAL; | |
1443 | } | |
1444 | ||
1445 | array += ev->header.size; | |
1446 | ret = perf_event__synthesize_id_sample(array, evsel->core.attr.sample_type, sample); | |
1447 | if (ret < 0) | |
1448 | return ret; | |
1449 | ||
1450 | if (ret & 7) { | |
1451 | pr_err("Bad id sample size %d\n", ret); | |
1452 | return -EINVAL; | |
1453 | } | |
1454 | ||
1455 | ev->header.size += ret; | |
1456 | ||
1457 | return 0; | |
1458 | } | |
1459 | ||
1460 | static int guest_session__inject_events(struct guest_session *gs, u64 timestamp) | |
1461 | { | |
1462 | struct perf_inject *inject = container_of(gs, struct perf_inject, guest_session); | |
1463 | int ret; | |
1464 | ||
1465 | if (!gs->ready) | |
1466 | return 0; | |
1467 | ||
1468 | while (1) { | |
1469 | struct perf_sample *sample; | |
1470 | struct guest_id *guest_id; | |
1471 | union perf_event *ev; | |
1472 | u16 id_hdr_size; | |
1473 | u8 cpumode; | |
1474 | u64 id; | |
1475 | ||
1476 | if (!gs->fetched) { | |
1477 | ret = guest_session__fetch(gs); | |
1478 | if (ret) | |
1479 | return ret; | |
1480 | gs->fetched = true; | |
1481 | } | |
1482 | ||
1483 | ev = gs->ev.event; | |
1484 | sample = &gs->ev.sample; | |
1485 | ||
1486 | if (!ev->header.size) | |
1487 | return 0; /* EOF */ | |
1488 | ||
1489 | if (sample->time > timestamp) | |
1490 | return 0; | |
1491 | ||
1492 | /* Change cpumode to guest */ | |
1493 | cpumode = ev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
1494 | if (cpumode & PERF_RECORD_MISC_USER) | |
1495 | cpumode = PERF_RECORD_MISC_GUEST_USER; | |
1496 | else | |
1497 | cpumode = PERF_RECORD_MISC_GUEST_KERNEL; | |
1498 | ev->header.misc &= ~PERF_RECORD_MISC_CPUMODE_MASK; | |
1499 | ev->header.misc |= cpumode; | |
1500 | ||
1501 | id = sample->id; | |
1502 | if (!id) { | |
1503 | id = gs->dflt_id; | |
1504 | id_hdr_size = gs->dflt_id_hdr_size; | |
1505 | } else { | |
1506 | struct evsel *evsel = evlist__id2evsel(gs->session->evlist, id); | |
1507 | ||
1508 | id_hdr_size = evsel__id_hdr_size(evsel); | |
1509 | } | |
1510 | ||
1511 | if (id_hdr_size & 7) { | |
1512 | pr_err("Bad id_hdr_size %u\n", id_hdr_size); | |
1513 | return -EINVAL; | |
1514 | } | |
1515 | ||
1516 | if (ev->header.size & 7) { | |
1517 | pr_err("Bad event size %u\n", ev->header.size); | |
1518 | return -EINVAL; | |
1519 | } | |
1520 | ||
1521 | /* Remove guest id sample */ | |
1522 | ev->header.size -= id_hdr_size; | |
1523 | ||
1524 | if (ev->header.size & 7) { | |
1525 | pr_err("Bad raw event size %u\n", ev->header.size); | |
1526 | return -EINVAL; | |
1527 | } | |
1528 | ||
1529 | guest_id = guest_session__lookup_id(gs, id); | |
1530 | if (!guest_id) { | |
1531 | pr_err("Guest event with unknown id %llu\n", | |
1532 | (unsigned long long)id); | |
1533 | return -EINVAL; | |
1534 | } | |
1535 | ||
1536 | /* Change to host ID to avoid conflicting ID values */ | |
1537 | sample->id = guest_id->host_id; | |
1538 | sample->stream_id = guest_id->host_id; | |
1539 | ||
1540 | if (sample->cpu != (u32)-1) { | |
1541 | if (sample->cpu >= gs->vcpu_cnt) { | |
1542 | pr_err("Guest event with unknown VCPU %u\n", | |
1543 | sample->cpu); | |
1544 | return -EINVAL; | |
1545 | } | |
1546 | /* Change to host CPU instead of guest VCPU */ | |
1547 | sample->cpu = gs->vcpu[sample->cpu].cpu; | |
1548 | } | |
1549 | ||
1550 | /* New id sample with new ID and CPU */ | |
1551 | ret = evlist__append_id_sample(inject->session->evlist, ev, sample); | |
1552 | if (ret) | |
1553 | return ret; | |
1554 | ||
1555 | if (ev->header.size & 7) { | |
1556 | pr_err("Bad new event size %u\n", ev->header.size); | |
1557 | return -EINVAL; | |
1558 | } | |
1559 | ||
1560 | gs->fetched = false; | |
1561 | ||
1562 | ret = output_bytes(inject, ev, ev->header.size); | |
1563 | if (ret) | |
1564 | return ret; | |
1565 | } | |
1566 | } | |
1567 | ||
1568 | static int guest_session__flush_events(struct guest_session *gs) | |
1569 | { | |
1570 | return guest_session__inject_events(gs, -1); | |
1571 | } | |
1572 | ||
1573 | static int host__repipe(struct perf_tool *tool, | |
1574 | union perf_event *event, | |
1575 | struct perf_sample *sample, | |
1576 | struct machine *machine) | |
1577 | { | |
1578 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
1579 | int ret; | |
1580 | ||
1581 | ret = guest_session__inject_events(&inject->guest_session, sample->time); | |
1582 | if (ret) | |
1583 | return ret; | |
1584 | ||
1585 | return perf_event__repipe(tool, event, sample, machine); | |
1586 | } | |
1587 | ||
1588 | static int host__finished_init(struct perf_session *session, union perf_event *event) | |
1589 | { | |
1590 | struct perf_inject *inject = container_of(session->tool, struct perf_inject, tool); | |
1591 | struct guest_session *gs = &inject->guest_session; | |
1592 | int ret; | |
1593 | ||
1594 | /* | |
1595 | * Peek through host COMM events to find QEMU threads and the VCPU they | |
1596 | * are running. | |
1597 | */ | |
1598 | ret = host_peek_vm_comms(session, gs); | |
1599 | if (ret) | |
1600 | return ret; | |
1601 | ||
1602 | if (!gs->vcpu_cnt) { | |
8147f79e | 1603 | pr_err("No VCPU threads found for pid %u\n", gs->machine_pid); |
97406a7e AH |
1604 | return -EINVAL; |
1605 | } | |
1606 | ||
1607 | /* | |
1608 | * Allocate new (unused) host sample IDs and map them to the guest IDs. | |
1609 | */ | |
1610 | gs->highest_id = evlist__find_highest_id(session->evlist); | |
1611 | ret = guest_session__map_ids(gs, session->evlist); | |
1612 | if (ret) | |
1613 | return ret; | |
1614 | ||
1615 | ret = guest_session__add_attrs(gs); | |
1616 | if (ret) | |
1617 | return ret; | |
1618 | ||
1619 | ret = synthesize_id_index(inject, gs->session->evlist->core.nr_entries); | |
1620 | if (ret) { | |
1621 | pr_err("Failed to synthesize id_index\n"); | |
1622 | return ret; | |
1623 | } | |
1624 | ||
1625 | ret = guest_session__add_build_ids(gs); | |
1626 | if (ret) { | |
1627 | pr_err("Failed to add guest build IDs\n"); | |
1628 | return ret; | |
1629 | } | |
1630 | ||
1631 | gs->ready = true; | |
1632 | ||
1633 | ret = guest_session__inject_events(gs, 0); | |
1634 | if (ret) | |
1635 | return ret; | |
1636 | ||
1637 | return perf_event__repipe_op2_synth(session, event); | |
1638 | } | |
1639 | ||
1640 | /* | |
1641 | * Obey finished-round ordering. The FINISHED_ROUND event is first processed | |
1642 | * which flushes host events to file up until the last flush time. Then inject | |
1643 | * guest events up to the same time. Finally write out the FINISHED_ROUND event | |
1644 | * itself. | |
1645 | */ | |
1646 | static int host__finished_round(struct perf_tool *tool, | |
1647 | union perf_event *event, | |
1648 | struct ordered_events *oe) | |
1649 | { | |
1650 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
1651 | int ret = perf_event__process_finished_round(tool, event, oe); | |
1652 | u64 timestamp = ordered_events__last_flush_time(oe); | |
1653 | ||
1654 | if (ret) | |
1655 | return ret; | |
1656 | ||
1657 | ret = guest_session__inject_events(&inject->guest_session, timestamp); | |
1658 | if (ret) | |
1659 | return ret; | |
1660 | ||
1661 | return perf_event__repipe_oe_synth(tool, event, oe); | |
1662 | } | |
1663 | ||
1664 | static int host__context_switch(struct perf_tool *tool, | |
1665 | union perf_event *event, | |
1666 | struct perf_sample *sample, | |
1667 | struct machine *machine) | |
1668 | { | |
1669 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); | |
1670 | bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT; | |
1671 | struct guest_session *gs = &inject->guest_session; | |
1672 | u32 pid = event->context_switch.next_prev_pid; | |
1673 | u32 tid = event->context_switch.next_prev_tid; | |
1674 | struct guest_tid *guest_tid; | |
1675 | u32 vcpu; | |
1676 | ||
1677 | if (out || pid != gs->machine_pid) | |
1678 | goto out; | |
1679 | ||
1680 | guest_tid = guest_session__lookup_tid(gs, tid); | |
1681 | if (!guest_tid) | |
1682 | goto out; | |
1683 | ||
1684 | if (sample->cpu == (u32)-1) { | |
1685 | pr_err("Switch event does not have CPU\n"); | |
1686 | return -EINVAL; | |
1687 | } | |
1688 | ||
1689 | vcpu = guest_tid->vcpu; | |
1690 | if (vcpu >= gs->vcpu_cnt) | |
1691 | return -EINVAL; | |
1692 | ||
1693 | /* Guest is switching in, record which CPU the VCPU is now running on */ | |
1694 | gs->vcpu[vcpu].cpu = sample->cpu; | |
1695 | out: | |
1696 | return host__repipe(tool, event, sample, machine); | |
1697 | } | |
1698 | ||
1d037ca1 | 1699 | static void sig_handler(int sig __maybe_unused) |
454c407e TZ |
1700 | { |
1701 | session_done = 1; | |
1702 | } | |
1703 | ||
b14b36d0 | 1704 | static int evsel__check_stype(struct evsel *evsel, u64 sample_type, const char *sample_msg) |
26a031e1 | 1705 | { |
1fc632ce | 1706 | struct perf_event_attr *attr = &evsel->core.attr; |
8ab2e96d | 1707 | const char *name = evsel__name(evsel); |
26a031e1 AV |
1708 | |
1709 | if (!(attr->sample_type & sample_type)) { | |
1710 | pr_err("Samples for %s event do not have %s attribute set.", | |
1711 | name, sample_msg); | |
1712 | return -EINVAL; | |
1713 | } | |
1714 | ||
1715 | return 0; | |
1716 | } | |
1717 | ||
f56fb986 AH |
1718 | static int drop_sample(struct perf_tool *tool __maybe_unused, |
1719 | union perf_event *event __maybe_unused, | |
1720 | struct perf_sample *sample __maybe_unused, | |
32dcd021 | 1721 | struct evsel *evsel __maybe_unused, |
f56fb986 AH |
1722 | struct machine *machine __maybe_unused) |
1723 | { | |
1724 | return 0; | |
1725 | } | |
1726 | ||
1727 | static void strip_init(struct perf_inject *inject) | |
1728 | { | |
63503dba | 1729 | struct evlist *evlist = inject->session->evlist; |
32dcd021 | 1730 | struct evsel *evsel; |
f56fb986 AH |
1731 | |
1732 | inject->tool.context_switch = perf_event__drop; | |
1733 | ||
e5cadb93 | 1734 | evlist__for_each_entry(evlist, evsel) |
f56fb986 AH |
1735 | evsel->handler = drop_sample; |
1736 | } | |
1737 | ||
83d7f5f1 AH |
1738 | static int parse_vm_time_correlation(const struct option *opt, const char *str, int unset) |
1739 | { | |
1740 | struct perf_inject *inject = opt->value; | |
1741 | const char *args; | |
1742 | char *dry_run; | |
1743 | ||
1744 | if (unset) | |
1745 | return 0; | |
1746 | ||
1747 | inject->itrace_synth_opts.set = true; | |
1748 | inject->itrace_synth_opts.vm_time_correlation = true; | |
1749 | inject->in_place_update = true; | |
1750 | ||
1751 | if (!str) | |
1752 | return 0; | |
1753 | ||
1754 | dry_run = skip_spaces(str); | |
1755 | if (!strncmp(dry_run, "dry-run", strlen("dry-run"))) { | |
1756 | inject->itrace_synth_opts.vm_tm_corr_dry_run = true; | |
1757 | inject->in_place_update_dry_run = true; | |
1758 | args = dry_run + strlen("dry-run"); | |
1759 | } else { | |
1760 | args = str; | |
1761 | } | |
1762 | ||
1763 | inject->itrace_synth_opts.vm_tm_corr_args = strdup(args); | |
1764 | ||
1765 | return inject->itrace_synth_opts.vm_tm_corr_args ? 0 : -ENOMEM; | |
1766 | } | |
1767 | ||
97406a7e AH |
1768 | static int parse_guest_data(const struct option *opt, const char *str, int unset) |
1769 | { | |
1770 | struct perf_inject *inject = opt->value; | |
1771 | struct guest_session *gs = &inject->guest_session; | |
1772 | char *tok; | |
1773 | char *s; | |
1774 | ||
1775 | if (unset) | |
1776 | return 0; | |
1777 | ||
1778 | if (!str) | |
1779 | goto bad_args; | |
1780 | ||
1781 | s = strdup(str); | |
1782 | if (!s) | |
1783 | return -ENOMEM; | |
1784 | ||
1785 | gs->perf_data_file = strsep(&s, ","); | |
1786 | if (!gs->perf_data_file) | |
1787 | goto bad_args; | |
1788 | ||
1789 | gs->copy_kcore_dir = has_kcore_dir(gs->perf_data_file); | |
1790 | if (gs->copy_kcore_dir) | |
1791 | inject->output.is_dir = true; | |
1792 | ||
1793 | tok = strsep(&s, ","); | |
1794 | if (!tok) | |
1795 | goto bad_args; | |
1796 | gs->machine_pid = strtoul(tok, NULL, 0); | |
1797 | if (!inject->guest_session.machine_pid) | |
1798 | goto bad_args; | |
1799 | ||
1800 | gs->time_scale = 1; | |
1801 | ||
1802 | tok = strsep(&s, ","); | |
1803 | if (!tok) | |
1804 | goto out; | |
1805 | gs->time_offset = strtoull(tok, NULL, 0); | |
1806 | ||
1807 | tok = strsep(&s, ","); | |
1808 | if (!tok) | |
1809 | goto out; | |
1810 | gs->time_scale = strtod(tok, NULL); | |
1811 | if (!gs->time_scale) | |
1812 | goto bad_args; | |
1813 | out: | |
1814 | return 0; | |
1815 | ||
1816 | bad_args: | |
1817 | pr_err("--guest-data option requires guest perf.data file name, " | |
1818 | "guest machine PID, and optionally guest timestamp offset, " | |
1819 | "and guest timestamp scale factor, separated by commas.\n"); | |
1820 | return -1; | |
1821 | } | |
1822 | ||
180b3d06 AH |
1823 | static int save_section_info_cb(struct perf_file_section *section, |
1824 | struct perf_header *ph __maybe_unused, | |
1825 | int feat, int fd __maybe_unused, void *data) | |
1826 | { | |
1827 | struct perf_inject *inject = data; | |
1828 | ||
1829 | inject->secs[feat] = *section; | |
1830 | return 0; | |
1831 | } | |
1832 | ||
1833 | static int save_section_info(struct perf_inject *inject) | |
1834 | { | |
1835 | struct perf_header *header = &inject->session->header; | |
1836 | int fd = perf_data__fd(inject->session->data); | |
1837 | ||
1838 | return perf_header__process_sections(header, fd, inject, save_section_info_cb); | |
1839 | } | |
1840 | ||
1841 | static bool keep_feat(int feat) | |
1842 | { | |
1843 | switch (feat) { | |
1844 | /* Keep original information that describes the machine or software */ | |
1845 | case HEADER_TRACING_DATA: | |
1846 | case HEADER_HOSTNAME: | |
1847 | case HEADER_OSRELEASE: | |
1848 | case HEADER_VERSION: | |
1849 | case HEADER_ARCH: | |
1850 | case HEADER_NRCPUS: | |
1851 | case HEADER_CPUDESC: | |
1852 | case HEADER_CPUID: | |
1853 | case HEADER_TOTAL_MEM: | |
1854 | case HEADER_CPU_TOPOLOGY: | |
1855 | case HEADER_NUMA_TOPOLOGY: | |
1856 | case HEADER_PMU_MAPPINGS: | |
1857 | case HEADER_CACHE: | |
1858 | case HEADER_MEM_TOPOLOGY: | |
1859 | case HEADER_CLOCKID: | |
1860 | case HEADER_BPF_PROG_INFO: | |
1861 | case HEADER_BPF_BTF: | |
1862 | case HEADER_CPU_PMU_CAPS: | |
1863 | case HEADER_CLOCK_DATA: | |
1864 | case HEADER_HYBRID_TOPOLOGY: | |
2139f742 | 1865 | case HEADER_PMU_CAPS: |
180b3d06 AH |
1866 | return true; |
1867 | /* Information that can be updated */ | |
1868 | case HEADER_BUILD_ID: | |
1869 | case HEADER_CMDLINE: | |
1870 | case HEADER_EVENT_DESC: | |
1871 | case HEADER_BRANCH_STACK: | |
1872 | case HEADER_GROUP_DESC: | |
1873 | case HEADER_AUXTRACE: | |
1874 | case HEADER_STAT: | |
1875 | case HEADER_SAMPLE_TIME: | |
1876 | case HEADER_DIR_FORMAT: | |
1877 | case HEADER_COMPRESSED: | |
1878 | default: | |
1879 | return false; | |
1880 | }; | |
1881 | } | |
1882 | ||
1883 | static int read_file(int fd, u64 offs, void *buf, size_t sz) | |
1884 | { | |
1885 | ssize_t ret = preadn(fd, buf, sz, offs); | |
1886 | ||
1887 | if (ret < 0) | |
1888 | return -errno; | |
1889 | if ((size_t)ret != sz) | |
1890 | return -EINVAL; | |
1891 | return 0; | |
1892 | } | |
1893 | ||
1894 | static int feat_copy(struct perf_inject *inject, int feat, struct feat_writer *fw) | |
1895 | { | |
1896 | int fd = perf_data__fd(inject->session->data); | |
1897 | u64 offs = inject->secs[feat].offset; | |
1898 | size_t sz = inject->secs[feat].size; | |
1899 | void *buf = malloc(sz); | |
1900 | int ret; | |
1901 | ||
1902 | if (!buf) | |
1903 | return -ENOMEM; | |
1904 | ||
1905 | ret = read_file(fd, offs, buf, sz); | |
1906 | if (ret) | |
1907 | goto out_free; | |
1908 | ||
1909 | ret = fw->write(fw, buf, sz); | |
1910 | out_free: | |
1911 | free(buf); | |
1912 | return ret; | |
1913 | } | |
1914 | ||
1915 | struct inject_fc { | |
1916 | struct feat_copier fc; | |
1917 | struct perf_inject *inject; | |
1918 | }; | |
1919 | ||
1920 | static int feat_copy_cb(struct feat_copier *fc, int feat, struct feat_writer *fw) | |
1921 | { | |
1922 | struct inject_fc *inj_fc = container_of(fc, struct inject_fc, fc); | |
1923 | struct perf_inject *inject = inj_fc->inject; | |
1924 | int ret; | |
1925 | ||
1926 | if (!inject->secs[feat].offset || | |
1927 | !keep_feat(feat)) | |
1928 | return 0; | |
1929 | ||
1930 | ret = feat_copy(inject, feat, fw); | |
1931 | if (ret < 0) | |
1932 | return ret; | |
1933 | ||
1934 | return 1; /* Feature section copied */ | |
1935 | } | |
1936 | ||
d8fc0855 AH |
1937 | static int copy_kcore_dir(struct perf_inject *inject) |
1938 | { | |
1939 | char *cmd; | |
1940 | int ret; | |
1941 | ||
1942 | ret = asprintf(&cmd, "cp -r -n %s/kcore_dir* %s >/dev/null 2>&1", | |
1943 | inject->input_name, inject->output.path); | |
1944 | if (ret < 0) | |
1945 | return ret; | |
1946 | pr_debug("%s\n", cmd); | |
342cb0d8 AH |
1947 | ret = system(cmd); |
1948 | free(cmd); | |
1949 | return ret; | |
d8fc0855 AH |
1950 | } |
1951 | ||
97406a7e AH |
1952 | static int guest_session__copy_kcore_dir(struct guest_session *gs) |
1953 | { | |
1954 | struct perf_inject *inject = container_of(gs, struct perf_inject, guest_session); | |
1955 | char *cmd; | |
1956 | int ret; | |
1957 | ||
1958 | ret = asprintf(&cmd, "cp -r -n %s/kcore_dir %s/kcore_dir__%u >/dev/null 2>&1", | |
1959 | gs->perf_data_file, inject->output.path, gs->machine_pid); | |
1960 | if (ret < 0) | |
1961 | return ret; | |
1962 | pr_debug("%s\n", cmd); | |
1963 | ret = system(cmd); | |
1964 | free(cmd); | |
1965 | return ret; | |
1966 | } | |
1967 | ||
c271a55b AH |
1968 | static int output_fd(struct perf_inject *inject) |
1969 | { | |
1970 | return inject->in_place_update ? -1 : perf_data__fd(&inject->output); | |
1971 | } | |
1972 | ||
5ded57ac | 1973 | static int __cmd_inject(struct perf_inject *inject) |
454c407e | 1974 | { |
454c407e | 1975 | int ret = -EINVAL; |
97406a7e | 1976 | struct guest_session *gs = &inject->guest_session; |
1cb8bdcc | 1977 | struct perf_session *session = inject->session; |
c271a55b | 1978 | int fd = output_fd(inject); |
0f0aa5e0 | 1979 | u64 output_data_offset; |
454c407e TZ |
1980 | |
1981 | signal(SIGINT, sig_handler); | |
1982 | ||
0f0aa5e0 | 1983 | if (inject->build_ids || inject->sched_stat || |
27c9c342 | 1984 | inject->itrace_synth_opts.set || inject->build_id_all) { |
5ded57ac | 1985 | inject->tool.mmap = perf_event__repipe_mmap; |
5c5e854b | 1986 | inject->tool.mmap2 = perf_event__repipe_mmap2; |
f62d3f0f | 1987 | inject->tool.fork = perf_event__repipe_fork; |
378ef0f5 | 1988 | #ifdef HAVE_LIBTRACEEVENT |
5ded57ac | 1989 | inject->tool.tracing_data = perf_event__repipe_tracing_data; |
378ef0f5 | 1990 | #endif |
454c407e TZ |
1991 | } |
1992 | ||
37ed2cdd | 1993 | output_data_offset = perf_session__data_offset(session->evlist); |
0f0aa5e0 | 1994 | |
27c9c342 NK |
1995 | if (inject->build_id_all) { |
1996 | inject->tool.mmap = perf_event__repipe_buildid_mmap; | |
1997 | inject->tool.mmap2 = perf_event__repipe_buildid_mmap2; | |
1998 | } else if (inject->build_ids) { | |
54a3cf59 AV |
1999 | inject->tool.sample = perf_event__inject_buildid; |
2000 | } else if (inject->sched_stat) { | |
32dcd021 | 2001 | struct evsel *evsel; |
26a031e1 | 2002 | |
e5cadb93 | 2003 | evlist__for_each_entry(session->evlist, evsel) { |
8ab2e96d | 2004 | const char *name = evsel__name(evsel); |
26a031e1 AV |
2005 | |
2006 | if (!strcmp(name, "sched:sched_switch")) { | |
b14b36d0 | 2007 | if (evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID")) |
26a031e1 AV |
2008 | return -EINVAL; |
2009 | ||
744a9719 | 2010 | evsel->handler = perf_inject__sched_switch; |
26a031e1 | 2011 | } else if (!strcmp(name, "sched:sched_process_exit")) |
744a9719 | 2012 | evsel->handler = perf_inject__sched_process_exit; |
378ef0f5 | 2013 | #ifdef HAVE_LIBTRACEEVENT |
26a031e1 | 2014 | else if (!strncmp(name, "sched:sched_stat_", 17)) |
744a9719 | 2015 | evsel->handler = perf_inject__sched_stat; |
378ef0f5 | 2016 | #endif |
26a031e1 | 2017 | } |
83d7f5f1 AH |
2018 | } else if (inject->itrace_synth_opts.vm_time_correlation) { |
2019 | session->itrace_synth_opts = &inject->itrace_synth_opts; | |
2020 | memset(&inject->tool, 0, sizeof(inject->tool)); | |
2021 | inject->tool.id_index = perf_event__process_id_index; | |
2022 | inject->tool.auxtrace_info = perf_event__process_auxtrace_info; | |
2023 | inject->tool.auxtrace = perf_event__process_auxtrace; | |
2024 | inject->tool.auxtrace_error = perf_event__process_auxtrace_error; | |
2025 | inject->tool.ordered_events = true; | |
2026 | inject->tool.ordering_requires_timestamps = true; | |
0f0aa5e0 AH |
2027 | } else if (inject->itrace_synth_opts.set) { |
2028 | session->itrace_synth_opts = &inject->itrace_synth_opts; | |
2029 | inject->itrace_synth_opts.inject = true; | |
2030 | inject->tool.comm = perf_event__repipe_comm; | |
f3b3614a | 2031 | inject->tool.namespaces = perf_event__repipe_namespaces; |
0f0aa5e0 | 2032 | inject->tool.exit = perf_event__repipe_exit; |
29f6eeca | 2033 | inject->tool.id_index = perf_event__process_id_index; |
0f0aa5e0 AH |
2034 | inject->tool.auxtrace_info = perf_event__process_auxtrace_info; |
2035 | inject->tool.auxtrace = perf_event__process_auxtrace; | |
73117308 | 2036 | inject->tool.aux = perf_event__drop_aux; |
61750473 AH |
2037 | inject->tool.itrace_start = perf_event__drop_aux; |
2038 | inject->tool.aux_output_hw_id = perf_event__drop_aux; | |
0f0aa5e0 AH |
2039 | inject->tool.ordered_events = true; |
2040 | inject->tool.ordering_requires_timestamps = true; | |
2041 | /* Allow space in the header for new attributes */ | |
c29d9792 | 2042 | output_data_offset = roundup(8192 + session->header.data_offset, 4096); |
f56fb986 AH |
2043 | if (inject->strip) |
2044 | strip_init(inject); | |
97406a7e AH |
2045 | } else if (gs->perf_data_file) { |
2046 | char *name = gs->perf_data_file; | |
2047 | ||
2048 | /* | |
2049 | * Not strictly necessary, but keep these events in order wrt | |
2050 | * guest events. | |
2051 | */ | |
2052 | inject->tool.mmap = host__repipe; | |
2053 | inject->tool.mmap2 = host__repipe; | |
2054 | inject->tool.comm = host__repipe; | |
2055 | inject->tool.fork = host__repipe; | |
2056 | inject->tool.exit = host__repipe; | |
2057 | inject->tool.lost = host__repipe; | |
2058 | inject->tool.context_switch = host__repipe; | |
2059 | inject->tool.ksymbol = host__repipe; | |
2060 | inject->tool.text_poke = host__repipe; | |
2061 | /* | |
2062 | * Once the host session has initialized, set up sample ID | |
2063 | * mapping and feed in guest attrs, build IDs and initial | |
2064 | * events. | |
2065 | */ | |
2066 | inject->tool.finished_init = host__finished_init; | |
2067 | /* Obey finished round ordering */ | |
2068 | inject->tool.finished_round = host__finished_round, | |
2069 | /* Keep track of which CPU a VCPU is runnng on */ | |
2070 | inject->tool.context_switch = host__context_switch; | |
2071 | /* | |
2072 | * Must order events to be able to obey finished round | |
2073 | * ordering. | |
2074 | */ | |
2075 | inject->tool.ordered_events = true; | |
2076 | inject->tool.ordering_requires_timestamps = true; | |
2077 | /* Set up a separate session to process guest perf.data file */ | |
2078 | ret = guest_session__start(gs, name, session->data->force); | |
2079 | if (ret) { | |
2080 | pr_err("Failed to process %s, error %d\n", name, ret); | |
2081 | return ret; | |
2082 | } | |
2083 | /* Allow space in the header for guest attributes */ | |
2084 | output_data_offset += gs->session->header.data_offset; | |
2085 | output_data_offset = roundup(output_data_offset, 4096); | |
26a031e1 AV |
2086 | } |
2087 | ||
99fa2984 AH |
2088 | if (!inject->itrace_synth_opts.set) |
2089 | auxtrace_index__free(&session->auxtrace_index); | |
2090 | ||
fea20d66 | 2091 | if (!inject->is_pipe && !inject->in_place_update) |
0f0aa5e0 | 2092 | lseek(fd, output_data_offset, SEEK_SET); |
e558a5bd | 2093 | |
b7b61cbe | 2094 | ret = perf_session__process_events(session); |
bb8d521f DCC |
2095 | if (ret) |
2096 | return ret; | |
454c407e | 2097 | |
97406a7e AH |
2098 | if (gs->session) { |
2099 | /* | |
2100 | * Remaining guest events have later timestamps. Flush them | |
2101 | * out to file. | |
2102 | */ | |
2103 | ret = guest_session__flush_events(gs); | |
2104 | if (ret) { | |
2105 | pr_err("Failed to flush guest events\n"); | |
2106 | return ret; | |
2107 | } | |
2108 | } | |
2109 | ||
fea20d66 | 2110 | if (!inject->is_pipe && !inject->in_place_update) { |
180b3d06 AH |
2111 | struct inject_fc inj_fc = { |
2112 | .fc.copy = feat_copy_cb, | |
2113 | .inject = inject, | |
2114 | }; | |
2115 | ||
640dad47 | 2116 | if (inject->build_ids) |
e38b43c3 AH |
2117 | perf_header__set_feat(&session->header, |
2118 | HEADER_BUILD_ID); | |
640dad47 AH |
2119 | /* |
2120 | * Keep all buildids when there is unprocessed AUX data because | |
2121 | * it is not known which ones the AUX trace hits. | |
2122 | */ | |
2123 | if (perf_header__has_feat(&session->header, HEADER_BUILD_ID) && | |
2124 | inject->have_auxtrace && !inject->itrace_synth_opts.set) | |
2125 | dsos__hit_all(session); | |
0f0aa5e0 AH |
2126 | /* |
2127 | * The AUX areas have been removed and replaced with | |
1c756cd4 | 2128 | * synthesized hardware events, so clear the feature flag. |
0f0aa5e0 | 2129 | */ |
051a01b9 | 2130 | if (inject->itrace_synth_opts.set) { |
0f0aa5e0 AH |
2131 | perf_header__clear_feat(&session->header, |
2132 | HEADER_AUXTRACE); | |
ec90e42c AH |
2133 | if (inject->itrace_synth_opts.last_branch || |
2134 | inject->itrace_synth_opts.add_last_branch) | |
051a01b9 AH |
2135 | perf_header__set_feat(&session->header, |
2136 | HEADER_BRANCH_STACK); | |
2137 | } | |
0f0aa5e0 | 2138 | session->header.data_offset = output_data_offset; |
e558a5bd | 2139 | session->header.data_size = inject->bytes_written; |
180b3d06 | 2140 | perf_session__inject_header(session, session->evlist, fd, &inj_fc.fc); |
d8fc0855 AH |
2141 | |
2142 | if (inject->copy_kcore_dir) { | |
2143 | ret = copy_kcore_dir(inject); | |
97406a7e AH |
2144 | if (ret) { |
2145 | pr_err("Failed to copy kcore\n"); | |
d8fc0855 | 2146 | return ret; |
97406a7e AH |
2147 | } |
2148 | } | |
2149 | if (gs->copy_kcore_dir) { | |
2150 | ret = guest_session__copy_kcore_dir(gs); | |
2151 | if (ret) { | |
2152 | pr_err("Failed to copy guest kcore\n"); | |
2153 | return ret; | |
2154 | } | |
d8fc0855 | 2155 | } |
e558a5bd AV |
2156 | } |
2157 | ||
454c407e TZ |
2158 | return ret; |
2159 | } | |
2160 | ||
b0ad8ea6 | 2161 | int cmd_inject(int argc, const char **argv) |
454c407e | 2162 | { |
5ded57ac ACM |
2163 | struct perf_inject inject = { |
2164 | .tool = { | |
2165 | .sample = perf_event__repipe_sample, | |
2946eced | 2166 | .read = perf_event__repipe_sample, |
5ded57ac | 2167 | .mmap = perf_event__repipe, |
5c5e854b | 2168 | .mmap2 = perf_event__repipe, |
5ded57ac | 2169 | .comm = perf_event__repipe, |
2946eced NK |
2170 | .namespaces = perf_event__repipe, |
2171 | .cgroup = perf_event__repipe, | |
5ded57ac ACM |
2172 | .fork = perf_event__repipe, |
2173 | .exit = perf_event__repipe, | |
2174 | .lost = perf_event__repipe, | |
d8145b3e | 2175 | .lost_samples = perf_event__repipe, |
4a96f7a0 | 2176 | .aux = perf_event__repipe, |
0ad21f68 | 2177 | .itrace_start = perf_event__repipe, |
61750473 | 2178 | .aux_output_hw_id = perf_event__repipe, |
0286039f | 2179 | .context_switch = perf_event__repipe, |
5ded57ac ACM |
2180 | .throttle = perf_event__repipe, |
2181 | .unthrottle = perf_event__repipe, | |
2946eced NK |
2182 | .ksymbol = perf_event__repipe, |
2183 | .bpf = perf_event__repipe, | |
2184 | .text_poke = perf_event__repipe, | |
5ded57ac | 2185 | .attr = perf_event__repipe_attr, |
2946eced | 2186 | .event_update = perf_event__repipe_event_update, |
47c3d109 | 2187 | .tracing_data = perf_event__repipe_op2_synth, |
d704ebda | 2188 | .finished_round = perf_event__repipe_oe_synth, |
5ded57ac | 2189 | .build_id = perf_event__repipe_op2_synth, |
3c659eed | 2190 | .id_index = perf_event__repipe_op2_synth, |
2946eced NK |
2191 | .auxtrace_info = perf_event__repipe_op2_synth, |
2192 | .auxtrace_error = perf_event__repipe_op2_synth, | |
2193 | .time_conv = perf_event__repipe_op2_synth, | |
2194 | .thread_map = perf_event__repipe_op2_synth, | |
2195 | .cpu_map = perf_event__repipe_op2_synth, | |
2196 | .stat_config = perf_event__repipe_op2_synth, | |
2197 | .stat = perf_event__repipe_op2_synth, | |
2198 | .stat_round = perf_event__repipe_op2_synth, | |
e9def1b2 | 2199 | .feature = perf_event__repipe_op2_synth, |
3812d298 | 2200 | .finished_init = perf_event__repipe_op2_synth, |
2946eced NK |
2201 | .compressed = perf_event__repipe_op4_synth, |
2202 | .auxtrace = perf_event__repipe_auxtrace, | |
5ded57ac | 2203 | }, |
e558a5bd | 2204 | .input_name = "-", |
26a031e1 | 2205 | .samples = LIST_HEAD_INIT(inject.samples), |
3406912c | 2206 | .output = { |
2d4f2799 JO |
2207 | .path = "-", |
2208 | .mode = PERF_DATA_MODE_WRITE, | |
60136667 | 2209 | .use_stdio = true, |
3406912c | 2210 | }, |
5ded57ac | 2211 | }; |
8ceb41d7 | 2212 | struct perf_data data = { |
1cb8bdcc | 2213 | .mode = PERF_DATA_MODE_READ, |
60136667 | 2214 | .use_stdio = true, |
1cb8bdcc NK |
2215 | }; |
2216 | int ret; | |
c3a057dc | 2217 | bool repipe = true; |
8012243e | 2218 | const char *known_build_ids = NULL; |
1cb8bdcc | 2219 | |
9b07e27f | 2220 | struct option options[] = { |
5ded57ac ACM |
2221 | OPT_BOOLEAN('b', "build-ids", &inject.build_ids, |
2222 | "Inject build-ids into the output stream"), | |
27c9c342 NK |
2223 | OPT_BOOLEAN(0, "buildid-all", &inject.build_id_all, |
2224 | "Inject build-ids of all DSOs into the output stream"), | |
8012243e RS |
2225 | OPT_STRING(0, "known-build-ids", &known_build_ids, |
2226 | "buildid path [,buildid path...]", | |
2227 | "build-ids to use for given paths"), | |
e558a5bd AV |
2228 | OPT_STRING('i', "input", &inject.input_name, "file", |
2229 | "input file name"), | |
2d4f2799 | 2230 | OPT_STRING('o', "output", &inject.output.path, "file", |
e558a5bd | 2231 | "output file name"), |
26a031e1 AV |
2232 | OPT_BOOLEAN('s', "sched-stat", &inject.sched_stat, |
2233 | "Merge sched-stat and sched-switch for getting events " | |
2234 | "where and how long tasks slept"), | |
e12b202f | 2235 | #ifdef HAVE_JITDUMP |
9b07e27f | 2236 | OPT_BOOLEAN('j', "jit", &inject.jit_mode, "merge jitdump files into perf.data file"), |
e12b202f | 2237 | #endif |
5ded57ac ACM |
2238 | OPT_INCR('v', "verbose", &verbose, |
2239 | "be more verbose (show build ids, etc)"), | |
b3a018fc JC |
2240 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
2241 | "file", "vmlinux pathname"), | |
2242 | OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux, | |
2243 | "don't load vmlinux even if found"), | |
a7a2b8b4 AH |
2244 | OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, "file", |
2245 | "kallsyms pathname"), | |
8ceb41d7 | 2246 | OPT_BOOLEAN('f', "force", &data.force, "don't complain, do it"), |
0f0aa5e0 | 2247 | OPT_CALLBACK_OPTARG(0, "itrace", &inject.itrace_synth_opts, |
c12e039d AK |
2248 | NULL, "opts", "Instruction Tracing options\n" |
2249 | ITRACE_HELP, | |
0f0aa5e0 | 2250 | itrace_parse_synth_opts), |
f56fb986 AH |
2251 | OPT_BOOLEAN(0, "strip", &inject.strip, |
2252 | "strip non-synthesized events (use with --itrace)"), | |
83d7f5f1 AH |
2253 | OPT_CALLBACK_OPTARG(0, "vm-time-correlation", &inject, NULL, "opts", |
2254 | "correlate time between VM guests and the host", | |
2255 | parse_vm_time_correlation), | |
97406a7e AH |
2256 | OPT_CALLBACK_OPTARG(0, "guest-data", &inject, NULL, "opts", |
2257 | "inject events from a guest perf.data file", | |
2258 | parse_guest_data), | |
2259 | OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory", | |
2260 | "guest mount directory under which every guest os" | |
2261 | " instance has a subdir"), | |
5ded57ac ACM |
2262 | OPT_END() |
2263 | }; | |
002439e8 ACM |
2264 | const char * const inject_usage[] = { |
2265 | "perf inject [<options>]", | |
2266 | NULL | |
2267 | }; | |
e12b202f | 2268 | #ifndef HAVE_JITDUMP |
9b07e27f SE |
2269 | set_option_nobuild(options, 'j', "jit", "NO_LIBELF=1", true); |
2270 | #endif | |
002439e8 | 2271 | argc = parse_options(argc, argv, options, inject_usage, 0); |
454c407e TZ |
2272 | |
2273 | /* | |
2274 | * Any (unrecognized) arguments left? | |
2275 | */ | |
2276 | if (argc) | |
002439e8 | 2277 | usage_with_options(inject_usage, options); |
454c407e | 2278 | |
f56fb986 AH |
2279 | if (inject.strip && !inject.itrace_synth_opts.set) { |
2280 | pr_err("--strip option requires --itrace option\n"); | |
2281 | return -1; | |
2282 | } | |
2283 | ||
b3a018fc JC |
2284 | if (symbol__validate_sym_arguments()) |
2285 | return -1; | |
2286 | ||
2a525f6a AH |
2287 | if (inject.in_place_update) { |
2288 | if (!strcmp(inject.input_name, "-")) { | |
2289 | pr_err("Input file name required for in-place updating\n"); | |
2290 | return -1; | |
2291 | } | |
2292 | if (strcmp(inject.output.path, "-")) { | |
2293 | pr_err("Output file name must not be specified for in-place updating\n"); | |
2294 | return -1; | |
2295 | } | |
2296 | if (!data.force && !inject.in_place_update_dry_run) { | |
2297 | pr_err("The input file would be updated in place, " | |
2298 | "the --force option is required.\n"); | |
2299 | return -1; | |
2300 | } | |
2301 | if (!inject.in_place_update_dry_run) | |
2302 | data.in_place_update = true; | |
d8fc0855 AH |
2303 | } else { |
2304 | if (strcmp(inject.output.path, "-") && !inject.strip && | |
2305 | has_kcore_dir(inject.input_name)) { | |
2306 | inject.output.is_dir = true; | |
2307 | inject.copy_kcore_dir = true; | |
2308 | } | |
2309 | if (perf_data__open(&inject.output)) { | |
2310 | perror("failed to create output file"); | |
2311 | return -1; | |
2312 | } | |
e558a5bd AV |
2313 | } |
2314 | ||
2d4f2799 | 2315 | data.path = inject.input_name; |
c3a057dc | 2316 | if (!strcmp(inject.input_name, "-") || inject.output.is_pipe) { |
fea20d66 | 2317 | inject.is_pipe = true; |
c3a057dc NK |
2318 | /* |
2319 | * Do not repipe header when input is a regular file | |
2320 | * since either it can rewrite the header at the end | |
2321 | * or write a new pipe header. | |
2322 | */ | |
2323 | if (strcmp(inject.input_name, "-")) | |
2324 | repipe = false; | |
2325 | } | |
fea20d66 | 2326 | |
c3a057dc | 2327 | inject.session = __perf_session__new(&data, repipe, |
c271a55b | 2328 | output_fd(&inject), |
fea20d66 | 2329 | &inject.tool); |
02e6246f RM |
2330 | if (IS_ERR(inject.session)) { |
2331 | ret = PTR_ERR(inject.session); | |
2332 | goto out_close_output; | |
2333 | } | |
1cb8bdcc | 2334 | |
371a3378 AB |
2335 | if (zstd_init(&(inject.session->zstd_data), 0) < 0) |
2336 | pr_warning("Decompression initialization failed.\n"); | |
2337 | ||
180b3d06 AH |
2338 | /* Save original section info before feature bits change */ |
2339 | ret = save_section_info(&inject); | |
2340 | if (ret) | |
2341 | goto out_delete; | |
2342 | ||
c3a057dc NK |
2343 | if (!data.is_pipe && inject.output.is_pipe) { |
2344 | ret = perf_header__write_pipe(perf_data__fd(&inject.output)); | |
2345 | if (ret < 0) { | |
2346 | pr_err("Couldn't write a new pipe header.\n"); | |
2347 | goto out_delete; | |
2348 | } | |
2349 | ||
2350 | ret = perf_event__synthesize_for_pipe(&inject.tool, | |
2351 | inject.session, | |
2352 | &inject.output, | |
2353 | perf_event__repipe); | |
2354 | if (ret < 0) | |
2355 | goto out_delete; | |
2356 | } | |
2357 | ||
27c9c342 | 2358 | if (inject.build_ids && !inject.build_id_all) { |
921f3fad ACM |
2359 | /* |
2360 | * to make sure the mmap records are ordered correctly | |
2361 | * and so that the correct especially due to jitted code | |
2362 | * mmaps. We cannot generate the buildid hit list and | |
2363 | * inject the jit mmaps at the same time for now. | |
2364 | */ | |
2365 | inject.tool.ordered_events = true; | |
2366 | inject.tool.ordering_requires_timestamps = true; | |
8012243e RS |
2367 | if (known_build_ids != NULL) { |
2368 | inject.known_build_ids = | |
2369 | perf_inject__parse_known_build_ids(known_build_ids); | |
2370 | ||
2371 | if (inject.known_build_ids == NULL) { | |
2372 | pr_err("Couldn't parse known build ids.\n"); | |
2373 | goto out_delete; | |
2374 | } | |
2375 | } | |
921f3fad | 2376 | } |
27c9c342 NK |
2377 | |
2378 | if (inject.sched_stat) { | |
2379 | inject.tool.ordered_events = true; | |
2380 | } | |
2381 | ||
e12b202f | 2382 | #ifdef HAVE_JITDUMP |
9b07e27f | 2383 | if (inject.jit_mode) { |
9b07e27f SE |
2384 | inject.tool.mmap2 = perf_event__jit_repipe_mmap2; |
2385 | inject.tool.mmap = perf_event__jit_repipe_mmap; | |
2386 | inject.tool.ordered_events = true; | |
2387 | inject.tool.ordering_requires_timestamps = true; | |
2388 | /* | |
2389 | * JIT MMAP injection injects all MMAP events in one go, so it | |
2390 | * does not obey finished_round semantics. | |
2391 | */ | |
2392 | inject.tool.finished_round = perf_event__drop_oe; | |
2393 | } | |
2394 | #endif | |
9fedfb0c TS |
2395 | ret = symbol__init(&inject.session->header.env); |
2396 | if (ret < 0) | |
2397 | goto out_delete; | |
454c407e | 2398 | |
1cb8bdcc NK |
2399 | ret = __cmd_inject(&inject); |
2400 | ||
97406a7e AH |
2401 | guest_session__exit(&inject.guest_session); |
2402 | ||
9fedfb0c | 2403 | out_delete: |
8012243e | 2404 | strlist__delete(inject.known_build_ids); |
371a3378 | 2405 | zstd_fini(&(inject.session->zstd_data)); |
1cb8bdcc | 2406 | perf_session__delete(inject.session); |
02e6246f | 2407 | out_close_output: |
0c8e32fe AH |
2408 | if (!inject.in_place_update) |
2409 | perf_data__close(&inject.output); | |
83d7f5f1 | 2410 | free(inject.itrace_synth_opts.vm_tm_corr_args); |
d3944f0e | 2411 | free(inject.event_copy); |
892d00fb | 2412 | free(inject.guest_session.ev.event_buf); |
1cb8bdcc | 2413 | return ret; |
454c407e | 2414 | } |