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