tools/perf/builtin-mem.c

   1 #include "builtin.h"
   2 #include "perf.h"
   3
   4 #include "util/parse-options.h"
   5 #include "util/trace-event.h"
   6 #include "util/tool.h"
   7 #include "util/session.h"
   8
   9 #define MEM_OPERATION_LOAD      "load"
  10 #define MEM_OPERATION_STORE     "store"
  11
  12 static const char       *mem_operation          = MEM_OPERATION_LOAD;
  13
  14 struct perf_mem {
  15         struct perf_tool        tool;
  16         char const              *input_name;
  17         bool                    hide_unresolved;
  18         bool                    dump_raw;
  19         const char              *cpu_list;
  20         DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
  21 };
  22
  23 static const char * const mem_usage[] = {
  24         "perf mem [<options>] {record <command> |report}",
  25         NULL
  26 };
  27
  28 static int __cmd_record(int argc, const char **argv)
  29 {
  30         int rec_argc, i = 0, j;
  31         const char **rec_argv;
  32         char event[64];
  33         int ret;
  34
  35         rec_argc = argc + 4;
  36         rec_argv = calloc(rec_argc + 1, sizeof(char *));
  37         if (!rec_argv)
  38                 return -1;
  39
  40         rec_argv[i++] = strdup("record");
  41         if (!strcmp(mem_operation, MEM_OPERATION_LOAD))
  42                 rec_argv[i++] = strdup("-W");
  43         rec_argv[i++] = strdup("-d");
  44         rec_argv[i++] = strdup("-e");
  45
  46         if (strcmp(mem_operation, MEM_OPERATION_LOAD))
  47                 sprintf(event, "cpu/mem-stores/pp");
  48         else
  49                 sprintf(event, "cpu/mem-loads/pp");
  50
  51         rec_argv[i++] = strdup(event);
  52         for (j = 1; j < argc; j++, i++)
  53                 rec_argv[i] = argv[j];
  54
  55         ret = cmd_record(i, rec_argv, NULL);
  56         free(rec_argv);
  57         return ret;
  58 }
  59
  60 static int
  61 dump_raw_samples(struct perf_tool *tool,
  62                  union perf_event *event,
  63                  struct perf_sample *sample,
  64                  struct perf_evsel *evsel __maybe_unused,
  65                  struct machine *machine)
  66 {
  67         struct perf_mem *mem = container_of(tool, struct perf_mem, tool);
  68         struct addr_location al;
  69         const char *fmt;
  70
  71         if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
  72                 fprintf(stderr, "problem processing %d event, skipping it.\n",
  73                                 event->header.type);
  74                 return -1;
  75         }
  76
  77         if (al.filtered || (mem->hide_unresolved && al.sym == NULL))
  78                 return 0;
  79
  80         if (al.map != NULL)
  81                 al.map->dso->hit = 1;
  82
  83         if (symbol_conf.field_sep) {
  84                 fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s%"PRIu64
  85                       "%s0x%"PRIx64"%s%s:%s\n";
  86         } else {
  87                 fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64
  88                       "%s%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n";
  89                 symbol_conf.field_sep = " ";
  90         }
  91
  92         printf(fmt,
  93                 sample->pid,
  94                 symbol_conf.field_sep,
  95                 sample->tid,
  96                 symbol_conf.field_sep,
  97                 sample->ip,
  98                 symbol_conf.field_sep,
  99                 sample->addr,
 100                 symbol_conf.field_sep,
 101                 sample->weight,
 102                 symbol_conf.field_sep,
 103                 sample->data_src,
 104                 symbol_conf.field_sep,
 105                 al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???",
 106                 al.sym ? al.sym->name : "???");
 107
 108         return 0;
 109 }
 110
 111 static int process_sample_event(struct perf_tool *tool,
 112                                 union perf_event *event,
 113                                 struct perf_sample *sample,
 114                                 struct perf_evsel *evsel,
 115                                 struct machine *machine)
 116 {
 117         return dump_raw_samples(tool, event, sample, evsel, machine);
 118 }
 119
 120 static int report_raw_events(struct perf_mem *mem)
 121 {
 122         int err = -EINVAL;
 123         int ret;
 124         struct perf_session *session = perf_session__new(input_name, O_RDONLY,
 125                                                          0, false, &mem->tool);
 126
 127         if (session == NULL)
 128                 return -ENOMEM;
 129
 130         if (mem->cpu_list) {
 131                 ret = perf_session__cpu_bitmap(session, mem->cpu_list,
 132                                                mem->cpu_bitmap);
 133                 if (ret)
 134                         goto out_delete;
 135         }
 136
 137         if (symbol__init() < 0)
 138                 return -1;
 139
 140         printf("# PID, TID, IP, ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n");
 141
 142         err = perf_session__process_events(session, &mem->tool);
 143         if (err)
 144                 return err;
 145
 146         return 0;
 147
 148 out_delete:
 149         perf_session__delete(session);
 150         return err;
 151 }
 152
 153 static int report_events(int argc, const char **argv, struct perf_mem *mem)
 154 {
 155         const char **rep_argv;
 156         int ret, i = 0, j, rep_argc;
 157
 158         if (mem->dump_raw)
 159                 return report_raw_events(mem);
 160
 161         rep_argc = argc + 3;
 162         rep_argv = calloc(rep_argc + 1, sizeof(char *));
 163         if (!rep_argv)
 164                 return -1;
 165
 166         rep_argv[i++] = strdup("report");
 167         rep_argv[i++] = strdup("--mem-mode");
 168         rep_argv[i++] = strdup("-n"); /* display number of samples */
 169
 170         /*
 171          * there is no weight (cost) associated with stores, so don't print
 172          * the column
 173          */
 174         if (strcmp(mem_operation, MEM_OPERATION_LOAD))
 175                 rep_argv[i++] = strdup("--sort=mem,sym,dso,symbol_daddr,"
 176                                        "dso_daddr,tlb,locked");
 177
 178         for (j = 1; j < argc; j++, i++)
 179                 rep_argv[i] = argv[j];
 180
 181         ret = cmd_report(i, rep_argv, NULL);
 182         free(rep_argv);
 183         return ret;
 184 }
 185
 186 int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused)
 187 {
 188         struct stat st;
 189         struct perf_mem mem = {
 190                 .tool = {
 191                         .sample         = process_sample_event,
 192                         .mmap           = perf_event__process_mmap,
 193                         .mmap2          = perf_event__process_mmap2,
 194                         .comm           = perf_event__process_comm,
 195                         .lost           = perf_event__process_lost,
 196                         .fork           = perf_event__process_fork,
 197                         .build_id       = perf_event__process_build_id,
 198                         .ordered_samples = true,
 199                 },
 200                 .input_name              = "perf.data",
 201         };
 202         const struct option mem_options[] = {
 203         OPT_STRING('t', "type", &mem_operation,
 204                    "type", "memory operations(load/store)"),
 205         OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw,
 206                     "dump raw samples in ASCII"),
 207         OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved,
 208                     "Only display entries resolved to a symbol"),
 209         OPT_STRING('i', "input", &input_name, "file",
 210                    "input file name"),
 211         OPT_STRING('C', "cpu", &mem.cpu_list, "cpu",
 212                    "list of cpus to profile"),
 213         OPT_STRING('x', "field-separator", &symbol_conf.field_sep,
 214                    "separator",
 215                    "separator for columns, no spaces will be added"
 216                    " between columns '.' is reserved."),
 217         OPT_END()
 218         };
 219
 220         argc = parse_options(argc, argv, mem_options, mem_usage,
 221                              PARSE_OPT_STOP_AT_NON_OPTION);
 222
 223         if (!argc || !(strncmp(argv[0], "rec", 3) || mem_operation))
 224                 usage_with_options(mem_usage, mem_options);
 225
 226         if (!mem.input_name || !strlen(mem.input_name)) {
 227                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
 228                         mem.input_name = "-";
 229                 else
 230                         mem.input_name = "perf.data";
 231         }
 232
 233         if (!strncmp(argv[0], "rec", 3))
 234                 return __cmd_record(argc, argv);
 235         else if (!strncmp(argv[0], "rep", 3))
 236                 return report_events(argc, argv, &mem);
 237         else
 238                 usage_with_options(mem_usage, mem_options);
 239
 240         return 0;
 241 }