tools/perf/builtin-mem.c

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