1 #include "builtin.h" 2 #include "perf.h" 3 4 #include <subcmd/parse-options.h> 5 #include "util/trace-event.h" 6 #include "util/tool.h" 7 #include "util/session.h" 8 #include "util/data.h" 9 #include "util/mem-events.h" 10 #include "util/debug.h" 11 12 #define MEM_OPERATION_LOAD 0x1 13 #define MEM_OPERATION_STORE 0x2 14 15 struct perf_mem { 16 struct perf_tool tool; 17 char const *input_name; 18 bool hide_unresolved; 19 bool dump_raw; 20 bool force; 21 int operation; 22 const char *cpu_list; 23 DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); 24 }; 25 26 static int parse_record_events(const struct option *opt, 27 const char *str, int unset __maybe_unused) 28 { 29 struct perf_mem *mem = *(struct perf_mem **)opt->value; 30 int j; 31 32 if (strcmp(str, "list")) { 33 if (!perf_mem_events__parse(str)) { 34 mem->operation = 0; 35 return 0; 36 } 37 exit(-1); 38 } 39 40 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) { 41 struct perf_mem_event *e = &perf_mem_events[j]; 42 43 fprintf(stderr, "%-13s%-*s%s\n", 44 e->tag, 45 verbose > 0 ? 25 : 0, 46 verbose > 0 ? perf_mem_events__name(j) : "", 47 e->supported ? ": available" : ""); 48 } 49 exit(0); 50 } 51 52 static const char * const __usage[] = { 53 "perf mem record [<options>] [<command>]", 54 "perf mem record [<options>] -- <command> [<options>]", 55 NULL 56 }; 57 58 static const char * const *record_mem_usage = __usage; 59 60 static int __cmd_record(int argc, const char **argv, struct perf_mem *mem) 61 { 62 int rec_argc, i = 0, j; 63 const char **rec_argv; 64 int ret; 65 bool all_user = false, all_kernel = false; 66 struct option options[] = { 67 OPT_CALLBACK('e', "event", &mem, "event", 68 "event selector. use 'perf mem record -e list' to list available events", 69 parse_record_events), 70 OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"), 71 OPT_INCR('v', "verbose", &verbose, 72 "be more verbose (show counter open errors, etc)"), 73 OPT_BOOLEAN('U', "all-user", &all_user, "collect only user level data"), 74 OPT_BOOLEAN('K', "all-kernel", &all_kernel, "collect only kernel level data"), 75 OPT_END() 76 }; 77 78 argc = parse_options(argc, argv, options, record_mem_usage, 79 PARSE_OPT_STOP_AT_NON_OPTION); 80 81 rec_argc = argc + 9; /* max number of arguments */ 82 rec_argv = calloc(rec_argc + 1, sizeof(char *)); 83 if (!rec_argv) 84 return -1; 85 86 rec_argv[i++] = "record"; 87 88 if (mem->operation & MEM_OPERATION_LOAD) 89 perf_mem_events[PERF_MEM_EVENTS__LOAD].record = true; 90 91 if (mem->operation & MEM_OPERATION_STORE) 92 perf_mem_events[PERF_MEM_EVENTS__STORE].record = true; 93 94 if (perf_mem_events[PERF_MEM_EVENTS__LOAD].record) 95 rec_argv[i++] = "-W"; 96 97 rec_argv[i++] = "-d"; 98 99 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) { 100 if (!perf_mem_events[j].record) 101 continue; 102 103 if (!perf_mem_events[j].supported) { 104 pr_err("failed: event '%s' not supported\n", 105 perf_mem_events__name(j)); 106 return -1; 107 } 108 109 rec_argv[i++] = "-e"; 110 rec_argv[i++] = perf_mem_events__name(j); 111 }; 112 113 if (all_user) 114 rec_argv[i++] = "--all-user"; 115 116 if (all_kernel) 117 rec_argv[i++] = "--all-kernel"; 118 119 for (j = 0; j < argc; j++, i++) 120 rec_argv[i] = argv[j]; 121 122 if (verbose > 0) { 123 pr_debug("calling: record "); 124 125 while (rec_argv[j]) { 126 pr_debug("%s ", rec_argv[j]); 127 j++; 128 } 129 pr_debug("\n"); 130 } 131 132 ret = cmd_record(i, rec_argv, NULL); 133 free(rec_argv); 134 return ret; 135 } 136 137 static int 138 dump_raw_samples(struct perf_tool *tool, 139 union perf_event *event, 140 struct perf_sample *sample, 141 struct machine *machine) 142 { 143 struct perf_mem *mem = container_of(tool, struct perf_mem, tool); 144 struct addr_location al; 145 const char *fmt; 146 147 if (machine__resolve(machine, &al, sample) < 0) { 148 fprintf(stderr, "problem processing %d event, skipping it.\n", 149 event->header.type); 150 return -1; 151 } 152 153 if (al.filtered || (mem->hide_unresolved && al.sym == NULL)) 154 goto out_put; 155 156 if (al.map != NULL) 157 al.map->dso->hit = 1; 158 159 if (symbol_conf.field_sep) { 160 fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s%"PRIu64 161 "%s0x%"PRIx64"%s%s:%s\n"; 162 } else { 163 fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64 164 "%s%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n"; 165 symbol_conf.field_sep = " "; 166 } 167 168 printf(fmt, 169 sample->pid, 170 symbol_conf.field_sep, 171 sample->tid, 172 symbol_conf.field_sep, 173 sample->ip, 174 symbol_conf.field_sep, 175 sample->addr, 176 symbol_conf.field_sep, 177 sample->weight, 178 symbol_conf.field_sep, 179 sample->data_src, 180 symbol_conf.field_sep, 181 al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???", 182 al.sym ? al.sym->name : "???"); 183 out_put: 184 addr_location__put(&al); 185 return 0; 186 } 187 188 static int process_sample_event(struct perf_tool *tool, 189 union perf_event *event, 190 struct perf_sample *sample, 191 struct perf_evsel *evsel __maybe_unused, 192 struct machine *machine) 193 { 194 return dump_raw_samples(tool, event, sample, machine); 195 } 196 197 static int report_raw_events(struct perf_mem *mem) 198 { 199 struct perf_data_file file = { 200 .path = input_name, 201 .mode = PERF_DATA_MODE_READ, 202 .force = mem->force, 203 }; 204 int ret; 205 struct perf_session *session = perf_session__new(&file, false, 206 &mem->tool); 207 208 if (session == NULL) 209 return -1; 210 211 if (mem->cpu_list) { 212 ret = perf_session__cpu_bitmap(session, mem->cpu_list, 213 mem->cpu_bitmap); 214 if (ret < 0) 215 goto out_delete; 216 } 217 218 ret = symbol__init(&session->header.env); 219 if (ret < 0) 220 goto out_delete; 221 222 printf("# PID, TID, IP, ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n"); 223 224 ret = perf_session__process_events(session); 225 226 out_delete: 227 perf_session__delete(session); 228 return ret; 229 } 230 231 static int report_events(int argc, const char **argv, struct perf_mem *mem) 232 { 233 const char **rep_argv; 234 int ret, i = 0, j, rep_argc; 235 236 if (mem->dump_raw) 237 return report_raw_events(mem); 238 239 rep_argc = argc + 3; 240 rep_argv = calloc(rep_argc + 1, sizeof(char *)); 241 if (!rep_argv) 242 return -1; 243 244 rep_argv[i++] = "report"; 245 rep_argv[i++] = "--mem-mode"; 246 rep_argv[i++] = "-n"; /* display number of samples */ 247 248 /* 249 * there is no weight (cost) associated with stores, so don't print 250 * the column 251 */ 252 if (!(mem->operation & MEM_OPERATION_LOAD)) 253 rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr," 254 "dso_daddr,tlb,locked"; 255 256 for (j = 1; j < argc; j++, i++) 257 rep_argv[i] = argv[j]; 258 259 ret = cmd_report(i, rep_argv, NULL); 260 free(rep_argv); 261 return ret; 262 } 263 264 struct mem_mode { 265 const char *name; 266 int mode; 267 }; 268 269 #define MEM_OPT(n, m) \ 270 { .name = n, .mode = (m) } 271 272 #define MEM_END { .name = NULL } 273 274 static const struct mem_mode mem_modes[]={ 275 MEM_OPT("load", MEM_OPERATION_LOAD), 276 MEM_OPT("store", MEM_OPERATION_STORE), 277 MEM_END 278 }; 279 280 static int 281 parse_mem_ops(const struct option *opt, const char *str, int unset) 282 { 283 int *mode = (int *)opt->value; 284 const struct mem_mode *m; 285 char *s, *os = NULL, *p; 286 int ret = -1; 287 288 if (unset) 289 return 0; 290 291 /* str may be NULL in case no arg is passed to -t */ 292 if (str) { 293 /* because str is read-only */ 294 s = os = strdup(str); 295 if (!s) 296 return -1; 297 298 /* reset mode */ 299 *mode = 0; 300 301 for (;;) { 302 p = strchr(s, ','); 303 if (p) 304 *p = '\0'; 305 306 for (m = mem_modes; m->name; m++) { 307 if (!strcasecmp(s, m->name)) 308 break; 309 } 310 if (!m->name) { 311 fprintf(stderr, "unknown sampling op %s," 312 " check man page\n", s); 313 goto error; 314 } 315 316 *mode |= m->mode; 317 318 if (!p) 319 break; 320 321 s = p + 1; 322 } 323 } 324 ret = 0; 325 326 if (*mode == 0) 327 *mode = MEM_OPERATION_LOAD; 328 error: 329 free(os); 330 return ret; 331 } 332 333 int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused) 334 { 335 struct stat st; 336 struct perf_mem mem = { 337 .tool = { 338 .sample = process_sample_event, 339 .mmap = perf_event__process_mmap, 340 .mmap2 = perf_event__process_mmap2, 341 .comm = perf_event__process_comm, 342 .lost = perf_event__process_lost, 343 .fork = perf_event__process_fork, 344 .build_id = perf_event__process_build_id, 345 .ordered_events = true, 346 }, 347 .input_name = "perf.data", 348 /* 349 * default to both load an store sampling 350 */ 351 .operation = MEM_OPERATION_LOAD | MEM_OPERATION_STORE, 352 }; 353 const struct option mem_options[] = { 354 OPT_CALLBACK('t', "type", &mem.operation, 355 "type", "memory operations(load,store) Default load,store", 356 parse_mem_ops), 357 OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw, 358 "dump raw samples in ASCII"), 359 OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved, 360 "Only display entries resolved to a symbol"), 361 OPT_STRING('i', "input", &input_name, "file", 362 "input file name"), 363 OPT_STRING('C', "cpu", &mem.cpu_list, "cpu", 364 "list of cpus to profile"), 365 OPT_STRING_NOEMPTY('x', "field-separator", &symbol_conf.field_sep, 366 "separator", 367 "separator for columns, no spaces will be added" 368 " between columns '.' is reserved."), 369 OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"), 370 OPT_END() 371 }; 372 const char *const mem_subcommands[] = { "record", "report", NULL }; 373 const char *mem_usage[] = { 374 NULL, 375 NULL 376 }; 377 378 if (perf_mem_events__init()) { 379 pr_err("failed: memory events not supported\n"); 380 return -1; 381 } 382 383 argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands, 384 mem_usage, PARSE_OPT_STOP_AT_NON_OPTION); 385 386 if (!argc || !(strncmp(argv[0], "rec", 3) || mem.operation)) 387 usage_with_options(mem_usage, mem_options); 388 389 if (!mem.input_name || !strlen(mem.input_name)) { 390 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) 391 mem.input_name = "-"; 392 else 393 mem.input_name = "perf.data"; 394 } 395 396 if (!strncmp(argv[0], "rec", 3)) 397 return __cmd_record(argc, argv, &mem); 398 else if (!strncmp(argv[0], "rep", 3)) 399 return report_events(argc, argv, &mem); 400 else 401 usage_with_options(mem_usage, mem_options); 402 403 return 0; 404 } 405