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/trace-event.h"
  11 #include "util/tool.h"
  12 #include "util/session.h"
  13 #include "util/data.h"
  14 #include "util/map_symbol.h"
  15 #include "util/mem-events.h"
  16 #include "util/debug.h"
  17 #include "util/dso.h"
  18 #include "util/map.h"
  19 #include "util/symbol.h"
  20 #include <linux/err.h>
  21
  22 #define MEM_OPERATION_LOAD      0x1
  23 #define MEM_OPERATION_STORE     0x2
  24
  25 struct perf_mem {
  26         struct perf_tool        tool;
  27         char const              *input_name;
  28         bool                    hide_unresolved;
  29         bool                    dump_raw;
  30         bool                    force;
  31         bool                    phys_addr;
  32         int                     operation;
  33         const char              *cpu_list;
  34         DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
  35 };
  36
  37 static int parse_record_events(const struct option *opt,
  38                                const char *str, int unset __maybe_unused)
  39 {
  40         struct perf_mem *mem = *(struct perf_mem **)opt->value;
  41         int j;
  42
  43         if (strcmp(str, "list")) {
  44                 if (!perf_mem_events__parse(str)) {
  45                         mem->operation = 0;
  46                         return 0;
  47                 }
  48                 exit(-1);
  49         }
  50
  51         for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
  52                 struct perf_mem_event *e = &perf_mem_events[j];
  53
  54                 fprintf(stderr, "%-13s%-*s%s\n",
  55                         e->tag,
  56                         verbose > 0 ? 25 : 0,
  57                         verbose > 0 ? perf_mem_events__name(j) : "",
  58                         e->supported ? ": available" : "");
  59         }
  60         exit(0);
  61 }
  62
  63 static const char * const __usage[] = {
  64         "perf mem record [<options>] [<command>]",
  65         "perf mem record [<options>] -- <command> [<options>]",
  66         NULL
  67 };
  68
  69 static const char * const *record_mem_usage = __usage;
  70
  71 static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
  72 {
  73         int rec_argc, i = 0, j;
  74         const char **rec_argv;
  75         int ret;
  76         bool all_user = false, all_kernel = false;
  77         struct option options[] = {
  78         OPT_CALLBACK('e', "event", &mem, "event",
  79                      "event selector. use 'perf mem record -e list' to list available events",
  80                      parse_record_events),
  81         OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"),
  82         OPT_INCR('v', "verbose", &verbose,
  83                  "be more verbose (show counter open errors, etc)"),
  84         OPT_BOOLEAN('U', "all-user", &all_user, "collect only user level data"),
  85         OPT_BOOLEAN('K', "all-kernel", &all_kernel, "collect only kernel level data"),
  86         OPT_END()
  87         };
  88
  89         argc = parse_options(argc, argv, options, record_mem_usage,
  90                              PARSE_OPT_KEEP_UNKNOWN);
  91
  92         rec_argc = argc + 9; /* max number of arguments */
  93         rec_argv = calloc(rec_argc + 1, sizeof(char *));
  94         if (!rec_argv)
  95                 return -1;
  96
  97         rec_argv[i++] = "record";
  98
  99         if (mem->operation & MEM_OPERATION_LOAD)
 100                 perf_mem_events[PERF_MEM_EVENTS__LOAD].record = true;
 101
 102         if (mem->operation & MEM_OPERATION_STORE)
 103                 perf_mem_events[PERF_MEM_EVENTS__STORE].record = true;
 104
 105         if (perf_mem_events[PERF_MEM_EVENTS__LOAD].record)
 106                 rec_argv[i++] = "-W";
 107
 108         rec_argv[i++] = "-d";
 109
 110         if (mem->phys_addr)
 111                 rec_argv[i++] = "--phys-data";
 112
 113         for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
 114                 if (!perf_mem_events[j].record)
 115                         continue;
 116
 117                 if (!perf_mem_events[j].supported) {
 118                         pr_err("failed: event '%s' not supported\n",
 119                                perf_mem_events__name(j));
 120                         free(rec_argv);
 121                         return -1;
 122                 }
 123
 124                 rec_argv[i++] = "-e";
 125                 rec_argv[i++] = perf_mem_events__name(j);
 126         };
 127
 128         if (all_user)
 129                 rec_argv[i++] = "--all-user";
 130
 131         if (all_kernel)
 132                 rec_argv[i++] = "--all-kernel";
 133
 134         for (j = 0; j < argc; j++, i++)
 135                 rec_argv[i] = argv[j];
 136
 137         if (verbose > 0) {
 138                 pr_debug("calling: record ");
 139
 140                 while (rec_argv[j]) {
 141                         pr_debug("%s ", rec_argv[j]);
 142                         j++;
 143                 }
 144                 pr_debug("\n");
 145         }
 146
 147         ret = cmd_record(i, rec_argv);
 148         free(rec_argv);
 149         return ret;
 150 }
 151
 152 static int
 153 dump_raw_samples(struct perf_tool *tool,
 154                  union perf_event *event,
 155                  struct perf_sample *sample,
 156                  struct machine *machine)
 157 {
 158         struct perf_mem *mem = container_of(tool, struct perf_mem, tool);
 159         struct addr_location al;
 160         const char *fmt;
 161
 162         if (machine__resolve(machine, &al, sample) < 0) {
 163                 fprintf(stderr, "problem processing %d event, skipping it.\n",
 164                                 event->header.type);
 165                 return -1;
 166         }
 167
 168         if (al.filtered || (mem->hide_unresolved && al.sym == NULL))
 169                 goto out_put;
 170
 171         if (al.map != NULL)
 172                 al.map->dso->hit = 1;
 173
 174         if (mem->phys_addr) {
 175                 if (symbol_conf.field_sep) {
 176                         fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s0x%016"PRIx64
 177                               "%s%"PRIu64"%s0x%"PRIx64"%s%s:%s\n";
 178                 } else {
 179                         fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64
 180                               "%s0x%016"PRIx64"%s%5"PRIu64"%s0x%06"PRIx64
 181                               "%s%s:%s\n";
 182                         symbol_conf.field_sep = " ";
 183                 }
 184
 185                 printf(fmt,
 186                         sample->pid,
 187                         symbol_conf.field_sep,
 188                         sample->tid,
 189                         symbol_conf.field_sep,
 190                         sample->ip,
 191                         symbol_conf.field_sep,
 192                         sample->addr,
 193                         symbol_conf.field_sep,
 194                         sample->phys_addr,
 195                         symbol_conf.field_sep,
 196                         sample->weight,
 197                         symbol_conf.field_sep,
 198                         sample->data_src,
 199                         symbol_conf.field_sep,
 200                         al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???",
 201                         al.sym ? al.sym->name : "???");
 202         } else {
 203                 if (symbol_conf.field_sep) {
 204                         fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s%"PRIu64
 205                               "%s0x%"PRIx64"%s%s:%s\n";
 206                 } else {
 207                         fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64
 208                               "%s%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n";
 209                         symbol_conf.field_sep = " ";
 210                 }
 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                         sample->weight,
 222                         symbol_conf.field_sep,
 223                         sample->data_src,
 224                         symbol_conf.field_sep,
 225                         al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???",
 226                         al.sym ? al.sym->name : "???");
 227         }
 228 out_put:
 229         addr_location__put(&al);
 230         return 0;
 231 }
 232
 233 static int process_sample_event(struct perf_tool *tool,
 234                                 union perf_event *event,
 235                                 struct perf_sample *sample,
 236                                 struct evsel *evsel __maybe_unused,
 237                                 struct machine *machine)
 238 {
 239         return dump_raw_samples(tool, event, sample, machine);
 240 }
 241
 242 static int report_raw_events(struct perf_mem *mem)
 243 {
 244         struct perf_data data = {
 245                 .path  = input_name,
 246                 .mode  = PERF_DATA_MODE_READ,
 247                 .force = mem->force,
 248         };
 249         int ret;
 250         struct perf_session *session = perf_session__new(&data, false,
 251                                                          &mem->tool);
 252
 253         if (IS_ERR(session))
 254                 return PTR_ERR(session);
 255
 256         if (mem->cpu_list) {
 257                 ret = perf_session__cpu_bitmap(session, mem->cpu_list,
 258                                                mem->cpu_bitmap);
 259                 if (ret < 0)
 260                         goto out_delete;
 261         }
 262
 263         ret = symbol__init(&session->header.env);
 264         if (ret < 0)
 265                 goto out_delete;
 266
 267         if (mem->phys_addr)
 268                 printf("# PID, TID, IP, ADDR, PHYS ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n");
 269         else
 270                 printf("# PID, TID, IP, ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n");
 271
 272         ret = perf_session__process_events(session);
 273
 274 out_delete:
 275         perf_session__delete(session);
 276         return ret;
 277 }
 278
 279 static int report_events(int argc, const char **argv, struct perf_mem *mem)
 280 {
 281         const char **rep_argv;
 282         int ret, i = 0, j, rep_argc;
 283
 284         if (mem->dump_raw)
 285                 return report_raw_events(mem);
 286
 287         rep_argc = argc + 3;
 288         rep_argv = calloc(rep_argc + 1, sizeof(char *));
 289         if (!rep_argv)
 290                 return -1;
 291
 292         rep_argv[i++] = "report";
 293         rep_argv[i++] = "--mem-mode";
 294         rep_argv[i++] = "-n"; /* display number of samples */
 295
 296         /*
 297          * there is no weight (cost) associated with stores, so don't print
 298          * the column
 299          */
 300         if (!(mem->operation & MEM_OPERATION_LOAD)) {
 301                 if (mem->phys_addr)
 302                         rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr,"
 303                                         "dso_daddr,tlb,locked,phys_daddr";
 304                 else
 305                         rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr,"
 306                                         "dso_daddr,tlb,locked";
 307         } else if (mem->phys_addr)
 308                 rep_argv[i++] = "--sort=local_weight,mem,sym,dso,symbol_daddr,"
 309                                 "dso_daddr,snoop,tlb,locked,phys_daddr";
 310
 311         for (j = 1; j < argc; j++, i++)
 312                 rep_argv[i] = argv[j];
 313
 314         ret = cmd_report(i, rep_argv);
 315         free(rep_argv);
 316         return ret;
 317 }
 318
 319 struct mem_mode {
 320         const char *name;
 321         int mode;
 322 };
 323
 324 #define MEM_OPT(n, m) \
 325         { .name = n, .mode = (m) }
 326
 327 #define MEM_END { .name = NULL }
 328
 329 static const struct mem_mode mem_modes[]={
 330         MEM_OPT("load", MEM_OPERATION_LOAD),
 331         MEM_OPT("store", MEM_OPERATION_STORE),
 332         MEM_END
 333 };
 334
 335 static int
 336 parse_mem_ops(const struct option *opt, const char *str, int unset)
 337 {
 338         int *mode = (int *)opt->value;
 339         const struct mem_mode *m;
 340         char *s, *os = NULL, *p;
 341         int ret = -1;
 342
 343         if (unset)
 344                 return 0;
 345
 346         /* str may be NULL in case no arg is passed to -t */
 347         if (str) {
 348                 /* because str is read-only */
 349                 s = os = strdup(str);
 350                 if (!s)
 351                         return -1;
 352
 353                 /* reset mode */
 354                 *mode = 0;
 355
 356                 for (;;) {
 357                         p = strchr(s, ',');
 358                         if (p)
 359                                 *p = '\0';
 360
 361                         for (m = mem_modes; m->name; m++) {
 362                                 if (!strcasecmp(s, m->name))
 363                                         break;
 364                         }
 365                         if (!m->name) {
 366                                 fprintf(stderr, "unknown sampling op %s,"
 367                                             " check man page\n", s);
 368                                 goto error;
 369                         }
 370
 371                         *mode |= m->mode;
 372
 373                         if (!p)
 374                                 break;
 375
 376                         s = p + 1;
 377                 }
 378         }
 379         ret = 0;
 380
 381         if (*mode == 0)
 382                 *mode = MEM_OPERATION_LOAD;
 383 error:
 384         free(os);
 385         return ret;
 386 }
 387
 388 int cmd_mem(int argc, const char **argv)
 389 {
 390         struct stat st;
 391         struct perf_mem mem = {
 392                 .tool = {
 393                         .sample         = process_sample_event,
 394                         .mmap           = perf_event__process_mmap,
 395                         .mmap2          = perf_event__process_mmap2,
 396                         .comm           = perf_event__process_comm,
 397                         .lost           = perf_event__process_lost,
 398                         .fork           = perf_event__process_fork,
 399                         .build_id       = perf_event__process_build_id,
 400                         .namespaces     = perf_event__process_namespaces,
 401                         .ordered_events = true,
 402                 },
 403                 .input_name              = "perf.data",
 404                 /*
 405                  * default to both load an store sampling
 406                  */
 407                 .operation               = MEM_OPERATION_LOAD | MEM_OPERATION_STORE,
 408         };
 409         const struct option mem_options[] = {
 410         OPT_CALLBACK('t', "type", &mem.operation,
 411                    "type", "memory operations(load,store) Default load,store",
 412                     parse_mem_ops),
 413         OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw,
 414                     "dump raw samples in ASCII"),
 415         OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved,
 416                     "Only display entries resolved to a symbol"),
 417         OPT_STRING('i', "input", &input_name, "file",
 418                    "input file name"),
 419         OPT_STRING('C', "cpu", &mem.cpu_list, "cpu",
 420                    "list of cpus to profile"),
 421         OPT_STRING_NOEMPTY('x', "field-separator", &symbol_conf.field_sep,
 422                    "separator",
 423                    "separator for columns, no spaces will be added"
 424                    " between columns '.' is reserved."),
 425         OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"),
 426         OPT_BOOLEAN('p', "phys-data", &mem.phys_addr, "Record/Report sample physical addresses"),
 427         OPT_END()
 428         };
 429         const char *const mem_subcommands[] = { "record", "report", NULL };
 430         const char *mem_usage[] = {
 431                 NULL,
 432                 NULL
 433         };
 434
 435         if (perf_mem_events__init()) {
 436                 pr_err("failed: memory events not supported\n");
 437                 return -1;
 438         }
 439
 440         argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands,
 441                                         mem_usage, PARSE_OPT_KEEP_UNKNOWN);
 442
 443         if (!argc || !(strncmp(argv[0], "rec", 3) || mem.operation))
 444                 usage_with_options(mem_usage, mem_options);
 445
 446         if (!mem.input_name || !strlen(mem.input_name)) {
 447                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
 448                         mem.input_name = "-";
 449                 else
 450                         mem.input_name = "perf.data";
 451         }
 452
 453         if (!strncmp(argv[0], "rec", 3))
 454                 return __cmd_record(argc, argv, &mem);
 455         else if (!strncmp(argv[0], "rep", 3))
 456                 return report_events(argc, argv, &mem);
 457         else
 458                 usage_with_options(mem_usage, mem_options);
 459
 460         return 0;
 461 }