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