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