tools/perf/builtin-mem.c

   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 }