1 // SPDX-License-Identifier: GPL-2.0 2 #include "data.h" 3 #include "debug.h" 4 #include "event.h" 5 #include "header.h" 6 #include "session.h" 7 #include "stat.h" 8 #include "tool.h" 9 #include "tsc.h" 10 #include <linux/compiler.h> 11 #include <sys/mman.h> 12 #include <stddef.h> 13 #include <unistd.h> 14 15 #ifdef HAVE_ZSTD_SUPPORT 16 static int perf_session__process_compressed_event(const struct perf_tool *tool __maybe_unused, 17 struct perf_session *session, 18 union perf_event *event, u64 file_offset, 19 const char *file_path) 20 { 21 void *src; 22 size_t decomp_size, src_size; 23 u64 decomp_last_rem = 0; 24 size_t mmap_len, decomp_len = perf_session__env(session)->comp_mmap_len; 25 struct decomp *decomp, *decomp_last = session->active_decomp->decomp_last; 26 27 if (decomp_last) { 28 decomp_last_rem = decomp_last->size - decomp_last->head; 29 decomp_len += decomp_last_rem; 30 } 31 32 mmap_len = sizeof(struct decomp) + decomp_len; 33 decomp = mmap(NULL, mmap_len, PROT_READ|PROT_WRITE, 34 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 35 if (decomp == MAP_FAILED) { 36 pr_err("Couldn't allocate memory for decompression\n"); 37 return -1; 38 } 39 40 decomp->file_pos = file_offset; 41 decomp->file_path = file_path; 42 decomp->mmap_len = mmap_len; 43 decomp->head = 0; 44 45 if (decomp_last_rem) { 46 memcpy(decomp->data, &(decomp_last->data[decomp_last->head]), decomp_last_rem); 47 decomp->size = decomp_last_rem; 48 } 49 50 if (event->header.type == PERF_RECORD_COMPRESSED) { 51 src = (void *)event + sizeof(struct perf_record_compressed); 52 src_size = event->pack.header.size - sizeof(struct perf_record_compressed); 53 } else if (event->header.type == PERF_RECORD_COMPRESSED2) { 54 src = (void *)event + sizeof(struct perf_record_compressed2); 55 src_size = event->pack2.data_size; 56 } else { 57 return -1; 58 } 59 60 decomp_size = zstd_decompress_stream(session->active_decomp->zstd_decomp, src, src_size, 61 &(decomp->data[decomp_last_rem]), decomp_len - decomp_last_rem); 62 if (!decomp_size) { 63 munmap(decomp, mmap_len); 64 pr_err("Couldn't decompress data\n"); 65 return -1; 66 } 67 68 decomp->size += decomp_size; 69 70 if (session->active_decomp->decomp == NULL) 71 session->active_decomp->decomp = decomp; 72 else 73 session->active_decomp->decomp_last->next = decomp; 74 75 session->active_decomp->decomp_last = decomp; 76 77 pr_debug("decomp (B): %zd to %zd\n", src_size, decomp_size); 78 79 return 0; 80 } 81 #endif 82 83 static int process_event_synth_tracing_data_stub(const struct perf_tool *tool __maybe_unused, 84 struct perf_session *session __maybe_unused, 85 union perf_event *event __maybe_unused) 86 { 87 dump_printf(": unhandled!\n"); 88 return 0; 89 } 90 91 static int process_event_synth_attr_stub(const struct perf_tool *tool __maybe_unused, 92 union perf_event *event __maybe_unused, 93 struct evlist **pevlist __maybe_unused) 94 { 95 dump_printf(": unhandled!\n"); 96 return 0; 97 } 98 99 static int process_event_synth_event_update_stub(const struct perf_tool *tool __maybe_unused, 100 union perf_event *event __maybe_unused, 101 struct evlist **pevlist __maybe_unused) 102 { 103 if (dump_trace) 104 perf_event__fprintf_event_update(event, stdout); 105 106 dump_printf(": unhandled!\n"); 107 return 0; 108 } 109 110 int process_event_sample_stub(const struct perf_tool *tool __maybe_unused, 111 union perf_event *event __maybe_unused, 112 struct perf_sample *sample __maybe_unused, 113 struct evsel *evsel __maybe_unused, 114 struct machine *machine __maybe_unused) 115 { 116 dump_printf(": unhandled!\n"); 117 return 0; 118 } 119 120 static int process_event_stub(const struct perf_tool *tool __maybe_unused, 121 union perf_event *event __maybe_unused, 122 struct perf_sample *sample __maybe_unused, 123 struct machine *machine __maybe_unused) 124 { 125 dump_printf(": unhandled!\n"); 126 return 0; 127 } 128 129 static int process_finished_round_stub(const struct perf_tool *tool __maybe_unused, 130 union perf_event *event __maybe_unused, 131 struct ordered_events *oe __maybe_unused) 132 { 133 dump_printf(": unhandled!\n"); 134 return 0; 135 } 136 137 static int skipn(int fd, off_t n) 138 { 139 char buf[4096]; 140 ssize_t ret; 141 142 while (n > 0) { 143 ret = read(fd, buf, min(n, (off_t)sizeof(buf))); 144 if (ret <= 0) 145 return ret; 146 n -= ret; 147 } 148 149 return 0; 150 } 151 152 static s64 process_event_auxtrace_stub(const struct perf_tool *tool __maybe_unused, 153 struct perf_session *session __maybe_unused, 154 union perf_event *event) 155 { 156 dump_printf(": unhandled!\n"); 157 if (perf_data__is_pipe(session->data)) 158 skipn(perf_data__fd(session->data), event->auxtrace.size); 159 return event->auxtrace.size; 160 } 161 162 static int process_event_op2_stub(const struct perf_tool *tool __maybe_unused, 163 struct perf_session *session __maybe_unused, 164 union perf_event *event __maybe_unused) 165 { 166 dump_printf(": unhandled!\n"); 167 return 0; 168 } 169 170 171 static 172 int process_event_thread_map_stub(const struct perf_tool *tool __maybe_unused, 173 struct perf_session *session __maybe_unused, 174 union perf_event *event __maybe_unused) 175 { 176 if (dump_trace) 177 perf_event__fprintf_thread_map(event, stdout); 178 179 dump_printf(": unhandled!\n"); 180 return 0; 181 } 182 183 static 184 int process_event_cpu_map_stub(const struct perf_tool *tool __maybe_unused, 185 struct perf_session *session __maybe_unused, 186 union perf_event *event __maybe_unused) 187 { 188 if (dump_trace) 189 perf_event__fprintf_cpu_map(event, stdout); 190 191 dump_printf(": unhandled!\n"); 192 return 0; 193 } 194 195 static 196 int process_event_stat_config_stub(const struct perf_tool *tool __maybe_unused, 197 struct perf_session *session __maybe_unused, 198 union perf_event *event __maybe_unused) 199 { 200 if (dump_trace) 201 perf_event__fprintf_stat_config(event, stdout); 202 203 dump_printf(": unhandled!\n"); 204 return 0; 205 } 206 207 static int process_stat_stub(const struct perf_tool *tool __maybe_unused, 208 struct perf_session *perf_session __maybe_unused, 209 union perf_event *event) 210 { 211 if (dump_trace) 212 perf_event__fprintf_stat(event, stdout); 213 214 dump_printf(": unhandled!\n"); 215 return 0; 216 } 217 218 static int process_stat_round_stub(const struct perf_tool *tool __maybe_unused, 219 struct perf_session *perf_session __maybe_unused, 220 union perf_event *event) 221 { 222 if (dump_trace) 223 perf_event__fprintf_stat_round(event, stdout); 224 225 dump_printf(": unhandled!\n"); 226 return 0; 227 } 228 229 static int process_event_time_conv_stub(const struct perf_tool *tool __maybe_unused, 230 struct perf_session *perf_session __maybe_unused, 231 union perf_event *event) 232 { 233 if (dump_trace) 234 perf_event__fprintf_time_conv(event, stdout); 235 236 dump_printf(": unhandled!\n"); 237 return 0; 238 } 239 240 static int perf_session__process_compressed_event_stub(const struct perf_tool *tool __maybe_unused, 241 struct perf_session *session __maybe_unused, 242 union perf_event *event __maybe_unused, 243 u64 file_offset __maybe_unused, 244 const char *file_path __maybe_unused) 245 { 246 dump_printf(": unhandled!\n"); 247 return 0; 248 } 249 250 static int perf_event__process_bpf_metadata_stub(const struct perf_tool *tool __maybe_unused, 251 struct perf_session *perf_session __maybe_unused, 252 union perf_event *event) 253 { 254 if (dump_trace) 255 perf_event__fprintf_bpf_metadata(event, stdout); 256 dump_printf(": unhandled!\n"); 257 return 0; 258 } 259 static int process_schedstat_cpu_stub(const struct perf_tool *tool __maybe_unused, 260 struct perf_session *perf_session __maybe_unused, 261 union perf_event *event) 262 { 263 if (dump_trace) 264 perf_event__fprintf_schedstat_cpu(event, stdout); 265 dump_printf(": unhandled!\n"); 266 return 0; 267 } 268 269 static int process_schedstat_domain_stub(const struct perf_tool *tool __maybe_unused, 270 struct perf_session *perf_session __maybe_unused, 271 union perf_event *event) 272 { 273 if (dump_trace) 274 perf_event__fprintf_schedstat_domain(event, stdout); 275 dump_printf(": unhandled!\n"); 276 return 0; 277 } 278 279 void perf_tool__init(struct perf_tool *tool, bool ordered_events) 280 { 281 tool->ordered_events = ordered_events; 282 tool->ordering_requires_timestamps = false; 283 tool->namespace_events = false; 284 tool->cgroup_events = false; 285 tool->no_warn = false; 286 tool->show_feat_hdr = SHOW_FEAT_NO_HEADER; 287 tool->merge_deferred_callchains = true; 288 289 tool->sample = process_event_sample_stub; 290 tool->mmap = process_event_stub; 291 tool->mmap2 = process_event_stub; 292 tool->comm = process_event_stub; 293 tool->namespaces = process_event_stub; 294 tool->cgroup = process_event_stub; 295 tool->fork = process_event_stub; 296 tool->exit = process_event_stub; 297 tool->lost = perf_event__process_lost; 298 tool->lost_samples = perf_event__process_lost_samples; 299 tool->aux = perf_event__process_aux; 300 tool->itrace_start = perf_event__process_itrace_start; 301 tool->context_switch = perf_event__process_switch; 302 tool->ksymbol = perf_event__process_ksymbol; 303 tool->bpf = perf_event__process_bpf; 304 tool->text_poke = perf_event__process_text_poke; 305 tool->aux_output_hw_id = perf_event__process_aux_output_hw_id; 306 tool->read = process_event_sample_stub; 307 tool->throttle = process_event_stub; 308 tool->unthrottle = process_event_stub; 309 tool->callchain_deferred = process_event_sample_stub; 310 tool->attr = process_event_synth_attr_stub; 311 tool->event_update = process_event_synth_event_update_stub; 312 tool->tracing_data = process_event_synth_tracing_data_stub; 313 tool->build_id = process_event_op2_stub; 314 315 if (ordered_events) 316 tool->finished_round = perf_event__process_finished_round; 317 else 318 tool->finished_round = process_finished_round_stub; 319 320 tool->id_index = process_event_op2_stub; 321 tool->auxtrace_info = process_event_op2_stub; 322 tool->auxtrace = process_event_auxtrace_stub; 323 tool->auxtrace_error = process_event_op2_stub; 324 tool->thread_map = process_event_thread_map_stub; 325 tool->cpu_map = process_event_cpu_map_stub; 326 tool->stat_config = process_event_stat_config_stub; 327 tool->stat = process_stat_stub; 328 tool->stat_round = process_stat_round_stub; 329 tool->time_conv = process_event_time_conv_stub; 330 tool->feature = process_event_op2_stub; 331 #ifdef HAVE_ZSTD_SUPPORT 332 tool->compressed = perf_session__process_compressed_event; 333 #else 334 tool->compressed = perf_session__process_compressed_event_stub; 335 #endif 336 tool->finished_init = process_event_op2_stub; 337 tool->bpf_metadata = perf_event__process_bpf_metadata_stub; 338 tool->schedstat_cpu = process_schedstat_cpu_stub; 339 tool->schedstat_domain = process_schedstat_domain_stub; 340 } 341 342 bool perf_tool__compressed_is_stub(const struct perf_tool *tool) 343 { 344 return tool->compressed == perf_session__process_compressed_event_stub; 345 } 346 347 #define CREATE_DELEGATE_SAMPLE(name) \ 348 static int delegate_ ## name(const struct perf_tool *tool, \ 349 union perf_event *event, \ 350 struct perf_sample *sample, \ 351 struct evsel *evsel, \ 352 struct machine *machine) \ 353 { \ 354 struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \ 355 struct perf_tool *delegate = del_tool->delegate; \ 356 return delegate->name(delegate, event, sample, evsel, machine); \ 357 } 358 CREATE_DELEGATE_SAMPLE(read); 359 CREATE_DELEGATE_SAMPLE(sample); 360 CREATE_DELEGATE_SAMPLE(callchain_deferred); 361 362 #define CREATE_DELEGATE_ATTR(name) \ 363 static int delegate_ ## name(const struct perf_tool *tool, \ 364 union perf_event *event, \ 365 struct evlist **pevlist) \ 366 { \ 367 struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \ 368 struct perf_tool *delegate = del_tool->delegate; \ 369 return delegate->name(delegate, event, pevlist); \ 370 } 371 CREATE_DELEGATE_ATTR(attr); 372 CREATE_DELEGATE_ATTR(event_update); 373 374 #define CREATE_DELEGATE_OE(name) \ 375 static int delegate_ ## name(const struct perf_tool *tool, \ 376 union perf_event *event, \ 377 struct ordered_events *oe) \ 378 { \ 379 struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \ 380 struct perf_tool *delegate = del_tool->delegate; \ 381 return delegate->name(delegate, event, oe); \ 382 } 383 CREATE_DELEGATE_OE(finished_round); 384 385 #define CREATE_DELEGATE_OP(name) \ 386 static int delegate_ ## name(const struct perf_tool *tool, \ 387 union perf_event *event, \ 388 struct perf_sample *sample, \ 389 struct machine *machine) \ 390 { \ 391 struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \ 392 struct perf_tool *delegate = del_tool->delegate; \ 393 return delegate->name(delegate, event, sample, machine); \ 394 } 395 CREATE_DELEGATE_OP(aux); 396 CREATE_DELEGATE_OP(aux_output_hw_id); 397 CREATE_DELEGATE_OP(bpf); 398 CREATE_DELEGATE_OP(cgroup); 399 CREATE_DELEGATE_OP(comm); 400 CREATE_DELEGATE_OP(context_switch); 401 CREATE_DELEGATE_OP(exit); 402 CREATE_DELEGATE_OP(fork); 403 CREATE_DELEGATE_OP(itrace_start); 404 CREATE_DELEGATE_OP(ksymbol); 405 CREATE_DELEGATE_OP(lost); 406 CREATE_DELEGATE_OP(lost_samples); 407 CREATE_DELEGATE_OP(mmap); 408 CREATE_DELEGATE_OP(mmap2); 409 CREATE_DELEGATE_OP(namespaces); 410 CREATE_DELEGATE_OP(text_poke); 411 CREATE_DELEGATE_OP(throttle); 412 CREATE_DELEGATE_OP(unthrottle); 413 414 #define CREATE_DELEGATE_OP2(name) \ 415 static int delegate_ ## name(const struct perf_tool *tool, \ 416 struct perf_session *session, \ 417 union perf_event *event) \ 418 { \ 419 struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \ 420 struct perf_tool *delegate = del_tool->delegate; \ 421 return delegate->name(delegate, session, event); \ 422 } 423 CREATE_DELEGATE_OP2(auxtrace_error); 424 CREATE_DELEGATE_OP2(auxtrace_info); 425 CREATE_DELEGATE_OP2(bpf_metadata); 426 CREATE_DELEGATE_OP2(build_id); 427 CREATE_DELEGATE_OP2(cpu_map); 428 CREATE_DELEGATE_OP2(feature); 429 CREATE_DELEGATE_OP2(finished_init); 430 CREATE_DELEGATE_OP2(id_index); 431 CREATE_DELEGATE_OP2(stat); 432 CREATE_DELEGATE_OP2(stat_config); 433 CREATE_DELEGATE_OP2(stat_round); 434 CREATE_DELEGATE_OP2(thread_map); 435 CREATE_DELEGATE_OP2(time_conv); 436 CREATE_DELEGATE_OP2(tracing_data); 437 438 #define CREATE_DELEGATE_OP3(name) \ 439 static s64 delegate_ ## name(const struct perf_tool *tool, \ 440 struct perf_session *session, \ 441 union perf_event *event) \ 442 { \ 443 struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \ 444 struct perf_tool *delegate = del_tool->delegate; \ 445 return delegate->name(delegate, session, event); \ 446 } 447 CREATE_DELEGATE_OP3(auxtrace); 448 449 #define CREATE_DELEGATE_OP4(name) \ 450 static int delegate_ ## name(const struct perf_tool *tool, \ 451 struct perf_session *session, \ 452 union perf_event *event, \ 453 u64 data, \ 454 const char *str) \ 455 { \ 456 struct delegate_tool *del_tool = container_of(tool, struct delegate_tool, tool); \ 457 struct perf_tool *delegate = del_tool->delegate; \ 458 return delegate->name(delegate, session, event, data, str); \ 459 } 460 CREATE_DELEGATE_OP4(compressed); 461 462 void delegate_tool__init(struct delegate_tool *tool, struct perf_tool *delegate) 463 { 464 tool->delegate = delegate; 465 466 tool->tool.ordered_events = delegate->ordered_events; 467 tool->tool.ordering_requires_timestamps = delegate->ordering_requires_timestamps; 468 tool->tool.namespace_events = delegate->namespace_events; 469 tool->tool.cgroup_events = delegate->cgroup_events; 470 tool->tool.no_warn = delegate->no_warn; 471 tool->tool.show_feat_hdr = delegate->show_feat_hdr; 472 tool->tool.merge_deferred_callchains = delegate->merge_deferred_callchains; 473 474 tool->tool.sample = delegate_sample; 475 tool->tool.read = delegate_read; 476 477 tool->tool.mmap = delegate_mmap; 478 tool->tool.mmap2 = delegate_mmap2; 479 tool->tool.comm = delegate_comm; 480 tool->tool.namespaces = delegate_namespaces; 481 tool->tool.cgroup = delegate_cgroup; 482 tool->tool.fork = delegate_fork; 483 tool->tool.exit = delegate_exit; 484 tool->tool.lost = delegate_lost; 485 tool->tool.lost_samples = delegate_lost_samples; 486 tool->tool.aux = delegate_aux; 487 tool->tool.itrace_start = delegate_itrace_start; 488 tool->tool.aux_output_hw_id = delegate_aux_output_hw_id; 489 tool->tool.context_switch = delegate_context_switch; 490 tool->tool.throttle = delegate_throttle; 491 tool->tool.unthrottle = delegate_unthrottle; 492 tool->tool.ksymbol = delegate_ksymbol; 493 tool->tool.bpf = delegate_bpf; 494 tool->tool.text_poke = delegate_text_poke; 495 tool->tool.callchain_deferred = delegate_callchain_deferred; 496 497 tool->tool.attr = delegate_attr; 498 tool->tool.event_update = delegate_event_update; 499 500 tool->tool.tracing_data = delegate_tracing_data; 501 502 tool->tool.finished_round = delegate_finished_round; 503 504 tool->tool.build_id = delegate_build_id; 505 tool->tool.id_index = delegate_id_index; 506 tool->tool.auxtrace_info = delegate_auxtrace_info; 507 tool->tool.auxtrace_error = delegate_auxtrace_error; 508 tool->tool.time_conv = delegate_time_conv; 509 tool->tool.thread_map = delegate_thread_map; 510 tool->tool.cpu_map = delegate_cpu_map; 511 tool->tool.stat_config = delegate_stat_config; 512 tool->tool.stat = delegate_stat; 513 tool->tool.stat_round = delegate_stat_round; 514 tool->tool.feature = delegate_feature; 515 tool->tool.finished_init = delegate_finished_init; 516 tool->tool.bpf_metadata = delegate_bpf_metadata; 517 tool->tool.compressed = delegate_compressed; 518 tool->tool.auxtrace = delegate_auxtrace; 519 } 520