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