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
  42         if (!strcmp(str, "list")) {
  43                 perf_mem_events__list();
  44                 exit(0);
  45         }
  46         if (perf_mem_events__parse(str))
  47                 exit(-1);
  48
  49         mem->operation = 0;
  50         return 0;
  51 }
  52
  53 static const char * const __usage[] = {
  54         "perf mem record [<options>] [<command>]",
  55         "perf mem record [<options>] -- <command> [<options>]",
  56         NULL
  57 };
  58
  59 static const char * const *record_mem_usage = __usage;
  60
  61 static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
  62 {
  63         int rec_argc, i = 0, j;
  64         const char **rec_argv;
  65         int ret;
  66         bool all_user = false, all_kernel = false;
  67         struct option options[] = {
  68         OPT_CALLBACK('e', "event", &mem, "event",
  69                      "event selector. use 'perf mem record -e list' to list available events",
  70                      parse_record_events),
  71         OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"),
  72         OPT_INCR('v', "verbose", &verbose,
  73                  "be more verbose (show counter open errors, etc)"),
  74         OPT_BOOLEAN('U', "all-user", &all_user, "collect only user level data"),
  75         OPT_BOOLEAN('K', "all-kernel", &all_kernel, "collect only kernel level data"),
  76         OPT_END()
  77         };
  78
  79         argc = parse_options(argc, argv, options, record_mem_usage,
  80                              PARSE_OPT_KEEP_UNKNOWN);
  81
  82         rec_argc = argc + 9; /* max number of arguments */
  83         rec_argv = calloc(rec_argc + 1, sizeof(char *));
  84         if (!rec_argv)
  85                 return -1;
  86
  87         rec_argv[i++] = "record";
  88
  89         if (mem->operation & MEM_OPERATION_LOAD)
  90                 perf_mem_events[PERF_MEM_EVENTS__LOAD].record = true;
  91
  92         if (mem->operation & MEM_OPERATION_STORE)
  93                 perf_mem_events[PERF_MEM_EVENTS__STORE].record = true;
  94
  95         if (perf_mem_events[PERF_MEM_EVENTS__LOAD].record)
  96                 rec_argv[i++] = "-W";
  97
  98         rec_argv[i++] = "-d";
  99
 100         if (mem->phys_addr)
 101                 rec_argv[i++] = "--phys-data";
 102
 103         for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
 104                 if (!perf_mem_events[j].record)
 105                         continue;
 106
 107                 if (!perf_mem_events[j].supported) {
 108                         pr_err("failed: event '%s' not supported\n",
 109                                perf_mem_events__name(j));
 110                         free(rec_argv);
 111                         return -1;
 112                 }
 113
 114                 rec_argv[i++] = "-e";
 115                 rec_argv[i++] = perf_mem_events__name(j);
 116         }
 117
 118         if (all_user)
 119                 rec_argv[i++] = "--all-user";
 120
 121         if (all_kernel)
 122                 rec_argv[i++] = "--all-kernel";
 123
 124         for (j = 0; j < argc; j++, i++)
 125                 rec_argv[i] = argv[j];
 126
 127         if (verbose > 0) {
 128                 pr_debug("calling: record ");
 129
 130                 while (rec_argv[j]) {
 131                         pr_debug("%s ", rec_argv[j]);
 132                         j++;
 133                 }
 134                 pr_debug("\n");
 135         }
 136
 137         ret = cmd_record(i, rec_argv);
 138         free(rec_argv);
 139         return ret;
 140 }
 141
 142 static int
 143 dump_raw_samples(struct perf_tool *tool,
 144                  union perf_event *event,
 145                  struct perf_sample *sample,
 146                  struct machine *machine)
 147 {
 148         struct perf_mem *mem = container_of(tool, struct perf_mem, tool);
 149         struct addr_location al;
 150         const char *fmt;
 151
 152         if (machine__resolve(machine, &al, sample) < 0) {
 153                 fprintf(stderr, "problem processing %d event, skipping it.\n",
 154                                 event->header.type);
 155                 return -1;
 156         }
 157
 158         if (al.filtered || (mem->hide_unresolved && al.sym == NULL))
 159                 goto out_put;
 160
 161         if (al.map != NULL)
 162                 al.map->dso->hit = 1;
 163
 164         if (mem->phys_addr) {
 165                 if (symbol_conf.field_sep) {
 166                         fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s0x%016"PRIx64
 167                               "%s%"PRIu64"%s0x%"PRIx64"%s%s:%s\n";
 168                 } else {
 169                         fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64
 170                               "%s0x%016"PRIx64"%s%5"PRIu64"%s0x%06"PRIx64
 171                               "%s%s:%s\n";
 172                         symbol_conf.field_sep = " ";
 173                 }
 174
 175                 printf(fmt,
 176                         sample->pid,
 177                         symbol_conf.field_sep,
 178                         sample->tid,
 179                         symbol_conf.field_sep,
 180                         sample->ip,
 181                         symbol_conf.field_sep,
 182                         sample->addr,
 183                         symbol_conf.field_sep,
 184                         sample->phys_addr,
 185                         symbol_conf.field_sep,
 186                         sample->weight,
 187                         symbol_conf.field_sep,
 188                         sample->data_src,
 189                         symbol_conf.field_sep,
 190                         al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???",
 191                         al.sym ? al.sym->name : "???");
 192         } else {
 193                 if (symbol_conf.field_sep) {
 194                         fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s%"PRIu64
 195                               "%s0x%"PRIx64"%s%s:%s\n";
 196                 } else {
 197                         fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64
 198                               "%s%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n";
 199                         symbol_conf.field_sep = " ";
 200                 }
 201
 202                 printf(fmt,
 203                         sample->pid,
 204                         symbol_conf.field_sep,
 205                         sample->tid,
 206                         symbol_conf.field_sep,
 207                         sample->ip,
 208                         symbol_conf.field_sep,
 209                         sample->addr,
 210                         symbol_conf.field_sep,
 211                         sample->weight,
 212                         symbol_conf.field_sep,
 213                         sample->data_src,
 214                         symbol_conf.field_sep,
 215                         al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???",
 216                         al.sym ? al.sym->name : "???");
 217         }
 218 out_put:
 219         addr_location__put(&al);
 220         return 0;
 221 }
 222
 223 static int process_sample_event(struct perf_tool *tool,
 224                                 union perf_event *event,
 225                                 struct perf_sample *sample,
 226                                 struct evsel *evsel __maybe_unused,
 227                                 struct machine *machine)
 228 {
 229         return dump_raw_samples(tool, event, sample, machine);
 230 }
 231
 232 static int report_raw_events(struct perf_mem *mem)
 233 {
 234         struct perf_data data = {
 235                 .path  = input_name,
 236                 .mode  = PERF_DATA_MODE_READ,
 237                 .force = mem->force,
 238         };
 239         int ret;
 240         struct perf_session *session = perf_session__new(&data, false,
 241                                                          &mem->tool);
 242
 243         if (IS_ERR(session))
 244                 return PTR_ERR(session);
 245
 246         if (mem->cpu_list) {
 247                 ret = perf_session__cpu_bitmap(session, mem->cpu_list,
 248                                                mem->cpu_bitmap);
 249                 if (ret < 0)
 250                         goto out_delete;
 251         }
 252
 253         ret = symbol__init(&session->header.env);
 254         if (ret < 0)
 255                 goto out_delete;
 256
 257         if (mem->phys_addr)
 258                 printf("# PID, TID, IP, ADDR, PHYS ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n");
 259         else
 260                 printf("# PID, TID, IP, ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n");
 261
 262         ret = perf_session__process_events(session);
 263
 264 out_delete:
 265         perf_session__delete(session);
 266         return ret;
 267 }
 268
 269 static int report_events(int argc, const char **argv, struct perf_mem *mem)
 270 {
 271         const char **rep_argv;
 272         int ret, i = 0, j, rep_argc;
 273
 274         if (mem->dump_raw)
 275                 return report_raw_events(mem);
 276
 277         rep_argc = argc + 3;
 278         rep_argv = calloc(rep_argc + 1, sizeof(char *));
 279         if (!rep_argv)
 280                 return -1;
 281
 282         rep_argv[i++] = "report";
 283         rep_argv[i++] = "--mem-mode";
 284         rep_argv[i++] = "-n"; /* display number of samples */
 285
 286         /*
 287          * there is no weight (cost) associated with stores, so don't print
 288          * the column
 289          */
 290         if (!(mem->operation & MEM_OPERATION_LOAD)) {
 291                 if (mem->phys_addr)
 292                         rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr,"
 293                                         "dso_daddr,tlb,locked,phys_daddr";
 294                 else
 295                         rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr,"
 296                                         "dso_daddr,tlb,locked";
 297         } else if (mem->phys_addr)
 298                 rep_argv[i++] = "--sort=local_weight,mem,sym,dso,symbol_daddr,"
 299                                 "dso_daddr,snoop,tlb,locked,phys_daddr";
 300
 301         for (j = 1; j < argc; j++, i++)
 302                 rep_argv[i] = argv[j];
 303
 304         ret = cmd_report(i, rep_argv);
 305         free(rep_argv);
 306         return ret;
 307 }
 308
 309 struct mem_mode {
 310         const char *name;
 311         int mode;
 312 };
 313
 314 #define MEM_OPT(n, m) \
 315         { .name = n, .mode = (m) }
 316
 317 #define MEM_END { .name = NULL }
 318
 319 static const struct mem_mode mem_modes[]={
 320         MEM_OPT("load", MEM_OPERATION_LOAD),
 321         MEM_OPT("store", MEM_OPERATION_STORE),
 322         MEM_END
 323 };
 324
 325 static int
 326 parse_mem_ops(const struct option *opt, const char *str, int unset)
 327 {
 328         int *mode = (int *)opt->value;
 329         const struct mem_mode *m;
 330         char *s, *os = NULL, *p;
 331         int ret = -1;
 332
 333         if (unset)
 334                 return 0;
 335
 336         /* str may be NULL in case no arg is passed to -t */
 337         if (str) {
 338                 /* because str is read-only */
 339                 s = os = strdup(str);
 340                 if (!s)
 341                         return -1;
 342
 343                 /* reset mode */
 344                 *mode = 0;
 345
 346                 for (;;) {
 347                         p = strchr(s, ',');
 348                         if (p)
 349                                 *p = '\0';
 350
 351                         for (m = mem_modes; m->name; m++) {
 352                                 if (!strcasecmp(s, m->name))
 353                                         break;
 354                         }
 355                         if (!m->name) {
 356                                 fprintf(stderr, "unknown sampling op %s,"
 357                                             " check man page\n", s);
 358                                 goto error;
 359                         }
 360
 361                         *mode |= m->mode;
 362
 363                         if (!p)
 364                                 break;
 365
 366                         s = p + 1;
 367                 }
 368         }
 369         ret = 0;
 370
 371         if (*mode == 0)
 372                 *mode = MEM_OPERATION_LOAD;
 373 error:
 374         free(os);
 375         return ret;
 376 }
 377
 378 int cmd_mem(int argc, const char **argv)
 379 {
 380         struct stat st;
 381         struct perf_mem mem = {
 382                 .tool = {
 383                         .sample         = process_sample_event,
 384                         .mmap           = perf_event__process_mmap,
 385                         .mmap2          = perf_event__process_mmap2,
 386                         .comm           = perf_event__process_comm,
 387                         .lost           = perf_event__process_lost,
 388                         .fork           = perf_event__process_fork,
 389                         .build_id       = perf_event__process_build_id,
 390                         .namespaces     = perf_event__process_namespaces,
 391                         .ordered_events = true,
 392                 },
 393                 .input_name              = "perf.data",
 394                 /*
 395                  * default to both load an store sampling
 396                  */
 397                 .operation               = MEM_OPERATION_LOAD | MEM_OPERATION_STORE,
 398         };
 399         const struct option mem_options[] = {
 400         OPT_CALLBACK('t', "type", &mem.operation,
 401                    "type", "memory operations(load,store) Default load,store",
 402                     parse_mem_ops),
 403         OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw,
 404                     "dump raw samples in ASCII"),
 405         OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved,
 406                     "Only display entries resolved to a symbol"),
 407         OPT_STRING('i', "input", &input_name, "file",
 408                    "input file name"),
 409         OPT_STRING('C', "cpu", &mem.cpu_list, "cpu",
 410                    "list of cpus to profile"),
 411         OPT_STRING_NOEMPTY('x', "field-separator", &symbol_conf.field_sep,
 412                    "separator",
 413                    "separator for columns, no spaces will be added"
 414                    " between columns '.' is reserved."),
 415         OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"),
 416         OPT_BOOLEAN('p', "phys-data", &mem.phys_addr, "Record/Report sample physical addresses"),
 417         OPT_END()
 418         };
 419         const char *const mem_subcommands[] = { "record", "report", NULL };
 420         const char *mem_usage[] = {
 421                 NULL,
 422                 NULL
 423         };
 424
 425         if (perf_mem_events__init()) {
 426                 pr_err("failed: memory events not supported\n");
 427                 return -1;
 428         }
 429
 430         argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands,
 431                                         mem_usage, PARSE_OPT_KEEP_UNKNOWN);
 432
 433         if (!argc || !(strncmp(argv[0], "rec", 3) || mem.operation))
 434                 usage_with_options(mem_usage, mem_options);
 435
 436         if (!mem.input_name || !strlen(mem.input_name)) {
 437                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
 438                         mem.input_name = "-";
 439                 else
 440                         mem.input_name = "perf.data";
 441         }
 442
 443         if (!strncmp(argv[0], "rec", 3))
 444                 return __cmd_record(argc, argv, &mem);
 445         else if (!strncmp(argv[0], "rep", 3))
 446                 return report_events(argc, argv, &mem);
 447         else
 448                 usage_with_options(mem_usage, mem_options);
 449
 450         return 0;
 451 }