1 // SPDX-License-Identifier: GPL-2.0 2 #include <inttypes.h> 3 #include <sys/types.h> 4 #include <sys/stat.h> 5 #include <unistd.h> 6 #include "builtin.h" 7 #include "perf.h" 8 9 #include <subcmd/parse-options.h> 10 #include "util/auxtrace.h" 11 #include "util/trace-event.h" 12 #include "util/tool.h" 13 #include "util/session.h" 14 #include "util/data.h" 15 #include "util/map_symbol.h" 16 #include "util/mem-events.h" 17 #include "util/debug.h" 18 #include "util/dso.h" 19 #include "util/map.h" 20 #include "util/symbol.h" 21 #include "util/pmu.h" 22 #include "util/pmu-hybrid.h" 23 #include <linux/err.h> 24 25 #define MEM_OPERATION_LOAD 0x1 26 #define MEM_OPERATION_STORE 0x2 27 28 struct perf_mem { 29 struct perf_tool tool; 30 char const *input_name; 31 bool hide_unresolved; 32 bool dump_raw; 33 bool force; 34 bool phys_addr; 35 bool data_page_size; 36 int operation; 37 const char *cpu_list; 38 DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); 39 }; 40 41 static int parse_record_events(const struct option *opt, 42 const char *str, int unset __maybe_unused) 43 { 44 struct perf_mem *mem = *(struct perf_mem **)opt->value; 45 46 if (!strcmp(str, "list")) { 47 perf_mem_events__list(); 48 exit(0); 49 } 50 if (perf_mem_events__parse(str)) 51 exit(-1); 52 53 mem->operation = 0; 54 return 0; 55 } 56 57 static const char * const __usage[] = { 58 "perf mem record [<options>] [<command>]", 59 "perf mem record [<options>] -- <command> [<options>]", 60 NULL 61 }; 62 63 static const char * const *record_mem_usage = __usage; 64 65 static int __cmd_record(int argc, const char **argv, struct perf_mem *mem) 66 { 67 int rec_argc, i = 0, j, tmp_nr = 0; 68 int start, end; 69 const char **rec_argv; 70 char **rec_tmp; 71 int ret; 72 bool all_user = false, all_kernel = false; 73 struct perf_mem_event *e; 74 struct option options[] = { 75 OPT_CALLBACK('e', "event", &mem, "event", 76 "event selector. use 'perf mem record -e list' to list available events", 77 parse_record_events), 78 OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"), 79 OPT_INCR('v', "verbose", &verbose, 80 "be more verbose (show counter open errors, etc)"), 81 OPT_BOOLEAN('U', "all-user", &all_user, "collect only user level data"), 82 OPT_BOOLEAN('K', "all-kernel", &all_kernel, "collect only kernel level data"), 83 OPT_END() 84 }; 85 86 if (perf_mem_events__init()) { 87 pr_err("failed: memory events not supported\n"); 88 return -1; 89 } 90 91 argc = parse_options(argc, argv, options, record_mem_usage, 92 PARSE_OPT_KEEP_UNKNOWN); 93 94 if (!perf_pmu__has_hybrid()) 95 rec_argc = argc + 9; /* max number of arguments */ 96 else 97 rec_argc = argc + 9 * perf_pmu__hybrid_pmu_num(); 98 99 rec_argv = calloc(rec_argc + 1, sizeof(char *)); 100 if (!rec_argv) 101 return -1; 102 103 /* 104 * Save the allocated event name strings. 105 */ 106 rec_tmp = calloc(rec_argc + 1, sizeof(char *)); 107 if (!rec_tmp) { 108 free(rec_argv); 109 return -1; 110 } 111 112 rec_argv[i++] = "record"; 113 114 e = perf_mem_events__ptr(PERF_MEM_EVENTS__LOAD_STORE); 115 116 /* 117 * The load and store operations are required, use the event 118 * PERF_MEM_EVENTS__LOAD_STORE if it is supported. 119 */ 120 if (e->tag && 121 (mem->operation & MEM_OPERATION_LOAD) && 122 (mem->operation & MEM_OPERATION_STORE)) { 123 e->record = true; 124 } else { 125 if (mem->operation & MEM_OPERATION_LOAD) { 126 e = perf_mem_events__ptr(PERF_MEM_EVENTS__LOAD); 127 e->record = true; 128 } 129 130 if (mem->operation & MEM_OPERATION_STORE) { 131 e = perf_mem_events__ptr(PERF_MEM_EVENTS__STORE); 132 e->record = true; 133 } 134 } 135 136 e = perf_mem_events__ptr(PERF_MEM_EVENTS__LOAD); 137 if (e->record) 138 rec_argv[i++] = "-W"; 139 140 rec_argv[i++] = "-d"; 141 142 if (mem->phys_addr) 143 rec_argv[i++] = "--phys-data"; 144 145 if (mem->data_page_size) 146 rec_argv[i++] = "--data-page-size"; 147 148 start = i; 149 ret = perf_mem_events__record_args(rec_argv, &i, rec_tmp, &tmp_nr); 150 if (ret) 151 goto out; 152 end = i; 153 154 if (all_user) 155 rec_argv[i++] = "--all-user"; 156 157 if (all_kernel) 158 rec_argv[i++] = "--all-kernel"; 159 160 for (j = 0; j < argc; j++, i++) 161 rec_argv[i] = argv[j]; 162 163 if (verbose > 0) { 164 pr_debug("calling: record "); 165 166 for (j = start; j < end; j++) 167 pr_debug("%s ", rec_argv[j]); 168 169 pr_debug("\n"); 170 } 171 172 ret = cmd_record(i, rec_argv); 173 out: 174 for (i = 0; i < tmp_nr; i++) 175 free(rec_tmp[i]); 176 177 free(rec_tmp); 178 free(rec_argv); 179 return ret; 180 } 181 182 static int 183 dump_raw_samples(struct perf_tool *tool, 184 union perf_event *event, 185 struct perf_sample *sample, 186 struct machine *machine) 187 { 188 struct perf_mem *mem = container_of(tool, struct perf_mem, tool); 189 struct addr_location al; 190 const char *fmt, *field_sep; 191 char str[PAGE_SIZE_NAME_LEN]; 192 193 if (machine__resolve(machine, &al, sample) < 0) { 194 fprintf(stderr, "problem processing %d event, skipping it.\n", 195 event->header.type); 196 return -1; 197 } 198 199 if (al.filtered || (mem->hide_unresolved && al.sym == NULL)) 200 goto out_put; 201 202 if (al.map != NULL) 203 al.map->dso->hit = 1; 204 205 field_sep = symbol_conf.field_sep; 206 if (field_sep) { 207 fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s"; 208 } else { 209 fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64"%s"; 210 symbol_conf.field_sep = " "; 211 } 212 printf(fmt, 213 sample->pid, 214 symbol_conf.field_sep, 215 sample->tid, 216 symbol_conf.field_sep, 217 sample->ip, 218 symbol_conf.field_sep, 219 sample->addr, 220 symbol_conf.field_sep); 221 222 if (mem->phys_addr) { 223 printf("0x%016"PRIx64"%s", 224 sample->phys_addr, 225 symbol_conf.field_sep); 226 } 227 228 if (mem->data_page_size) { 229 printf("%s%s", 230 get_page_size_name(sample->data_page_size, str), 231 symbol_conf.field_sep); 232 } 233 234 if (field_sep) 235 fmt = "%"PRIu64"%s0x%"PRIx64"%s%s:%s\n"; 236 else 237 fmt = "%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n"; 238 239 printf(fmt, 240 sample->weight, 241 symbol_conf.field_sep, 242 sample->data_src, 243 symbol_conf.field_sep, 244 al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???", 245 al.sym ? al.sym->name : "???"); 246 out_put: 247 addr_location__put(&al); 248 return 0; 249 } 250 251 static int process_sample_event(struct perf_tool *tool, 252 union perf_event *event, 253 struct perf_sample *sample, 254 struct evsel *evsel __maybe_unused, 255 struct machine *machine) 256 { 257 return dump_raw_samples(tool, event, sample, machine); 258 } 259 260 static int report_raw_events(struct perf_mem *mem) 261 { 262 struct itrace_synth_opts itrace_synth_opts = { 263 .set = true, 264 .mem = true, /* Only enable memory event */ 265 .default_no_sample = true, 266 }; 267 268 struct perf_data data = { 269 .path = input_name, 270 .mode = PERF_DATA_MODE_READ, 271 .force = mem->force, 272 }; 273 int ret; 274 struct perf_session *session = perf_session__new(&data, false, 275 &mem->tool); 276 277 if (IS_ERR(session)) 278 return PTR_ERR(session); 279 280 session->itrace_synth_opts = &itrace_synth_opts; 281 282 if (mem->cpu_list) { 283 ret = perf_session__cpu_bitmap(session, mem->cpu_list, 284 mem->cpu_bitmap); 285 if (ret < 0) 286 goto out_delete; 287 } 288 289 ret = symbol__init(&session->header.env); 290 if (ret < 0) 291 goto out_delete; 292 293 printf("# PID, TID, IP, ADDR, "); 294 295 if (mem->phys_addr) 296 printf("PHYS ADDR, "); 297 298 if (mem->data_page_size) 299 printf("DATA PAGE SIZE, "); 300 301 printf("LOCAL WEIGHT, DSRC, SYMBOL\n"); 302 303 ret = perf_session__process_events(session); 304 305 out_delete: 306 perf_session__delete(session); 307 return ret; 308 } 309 static char *get_sort_order(struct perf_mem *mem) 310 { 311 bool has_extra_options = (mem->phys_addr | mem->data_page_size) ? true : false; 312 char sort[128]; 313 314 /* 315 * there is no weight (cost) associated with stores, so don't print 316 * the column 317 */ 318 if (!(mem->operation & MEM_OPERATION_LOAD)) { 319 strcpy(sort, "--sort=mem,sym,dso,symbol_daddr," 320 "dso_daddr,tlb,locked"); 321 } else if (has_extra_options) { 322 strcpy(sort, "--sort=local_weight,mem,sym,dso,symbol_daddr," 323 "dso_daddr,snoop,tlb,locked,blocked"); 324 } else 325 return NULL; 326 327 if (mem->phys_addr) 328 strcat(sort, ",phys_daddr"); 329 330 if (mem->data_page_size) 331 strcat(sort, ",data_page_size"); 332 333 return strdup(sort); 334 } 335 336 static int report_events(int argc, const char **argv, struct perf_mem *mem) 337 { 338 const char **rep_argv; 339 int ret, i = 0, j, rep_argc; 340 char *new_sort_order; 341 342 if (mem->dump_raw) 343 return report_raw_events(mem); 344 345 rep_argc = argc + 3; 346 rep_argv = calloc(rep_argc + 1, sizeof(char *)); 347 if (!rep_argv) 348 return -1; 349 350 rep_argv[i++] = "report"; 351 rep_argv[i++] = "--mem-mode"; 352 rep_argv[i++] = "-n"; /* display number of samples */ 353 354 new_sort_order = get_sort_order(mem); 355 if (new_sort_order) 356 rep_argv[i++] = new_sort_order; 357 358 for (j = 1; j < argc; j++, i++) 359 rep_argv[i] = argv[j]; 360 361 ret = cmd_report(i, rep_argv); 362 free(rep_argv); 363 return ret; 364 } 365 366 struct mem_mode { 367 const char *name; 368 int mode; 369 }; 370 371 #define MEM_OPT(n, m) \ 372 { .name = n, .mode = (m) } 373 374 #define MEM_END { .name = NULL } 375 376 static const struct mem_mode mem_modes[]={ 377 MEM_OPT("load", MEM_OPERATION_LOAD), 378 MEM_OPT("store", MEM_OPERATION_STORE), 379 MEM_END 380 }; 381 382 static int 383 parse_mem_ops(const struct option *opt, const char *str, int unset) 384 { 385 int *mode = (int *)opt->value; 386 const struct mem_mode *m; 387 char *s, *os = NULL, *p; 388 int ret = -1; 389 390 if (unset) 391 return 0; 392 393 /* str may be NULL in case no arg is passed to -t */ 394 if (str) { 395 /* because str is read-only */ 396 s = os = strdup(str); 397 if (!s) 398 return -1; 399 400 /* reset mode */ 401 *mode = 0; 402 403 for (;;) { 404 p = strchr(s, ','); 405 if (p) 406 *p = '\0'; 407 408 for (m = mem_modes; m->name; m++) { 409 if (!strcasecmp(s, m->name)) 410 break; 411 } 412 if (!m->name) { 413 fprintf(stderr, "unknown sampling op %s," 414 " check man page\n", s); 415 goto error; 416 } 417 418 *mode |= m->mode; 419 420 if (!p) 421 break; 422 423 s = p + 1; 424 } 425 } 426 ret = 0; 427 428 if (*mode == 0) 429 *mode = MEM_OPERATION_LOAD; 430 error: 431 free(os); 432 return ret; 433 } 434 435 int cmd_mem(int argc, const char **argv) 436 { 437 struct stat st; 438 struct perf_mem mem = { 439 .tool = { 440 .sample = process_sample_event, 441 .mmap = perf_event__process_mmap, 442 .mmap2 = perf_event__process_mmap2, 443 .comm = perf_event__process_comm, 444 .lost = perf_event__process_lost, 445 .fork = perf_event__process_fork, 446 .attr = perf_event__process_attr, 447 .build_id = perf_event__process_build_id, 448 .namespaces = perf_event__process_namespaces, 449 .auxtrace_info = perf_event__process_auxtrace_info, 450 .auxtrace = perf_event__process_auxtrace, 451 .auxtrace_error = perf_event__process_auxtrace_error, 452 .ordered_events = true, 453 }, 454 .input_name = "perf.data", 455 /* 456 * default to both load an store sampling 457 */ 458 .operation = MEM_OPERATION_LOAD | MEM_OPERATION_STORE, 459 }; 460 const struct option mem_options[] = { 461 OPT_CALLBACK('t', "type", &mem.operation, 462 "type", "memory operations(load,store) Default load,store", 463 parse_mem_ops), 464 OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw, 465 "dump raw samples in ASCII"), 466 OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved, 467 "Only display entries resolved to a symbol"), 468 OPT_STRING('i', "input", &input_name, "file", 469 "input file name"), 470 OPT_STRING('C', "cpu", &mem.cpu_list, "cpu", 471 "list of cpus to profile"), 472 OPT_STRING_NOEMPTY('x', "field-separator", &symbol_conf.field_sep, 473 "separator", 474 "separator for columns, no spaces will be added" 475 " between columns '.' is reserved."), 476 OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"), 477 OPT_BOOLEAN('p', "phys-data", &mem.phys_addr, "Record/Report sample physical addresses"), 478 OPT_BOOLEAN(0, "data-page-size", &mem.data_page_size, "Record/Report sample data address page size"), 479 OPT_END() 480 }; 481 const char *const mem_subcommands[] = { "record", "report", NULL }; 482 const char *mem_usage[] = { 483 NULL, 484 NULL 485 }; 486 487 argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands, 488 mem_usage, PARSE_OPT_KEEP_UNKNOWN); 489 490 if (!argc || !(strncmp(argv[0], "rec", 3) || mem.operation)) 491 usage_with_options(mem_usage, mem_options); 492 493 if (!mem.input_name || !strlen(mem.input_name)) { 494 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) 495 mem.input_name = "-"; 496 else 497 mem.input_name = "perf.data"; 498 } 499 500 if (!strncmp(argv[0], "rec", 3)) 501 return __cmd_record(argc, argv, &mem); 502 else if (!strncmp(argv[0], "rep", 3)) 503 return report_events(argc, argv, &mem); 504 else 505 usage_with_options(mem_usage, mem_options); 506 507 return 0; 508 } 509