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 #include "util/data.h"
   9
  10 #define MEM_OPERATION_LOAD      "load"
  11 #define MEM_OPERATION_STORE     "store"
  12
  13 static const char       *mem_operation          = MEM_OPERATION_LOAD;
  14
  15 struct perf_mem {
  16         struct perf_tool        tool;
  17         char const              *input_name;
  18         bool                    hide_unresolved;
  19         bool                    dump_raw;
  20         const char              *cpu_list;
  21         DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
  22 };
  23
  24 static const char * const mem_usage[] = {
  25         "perf mem [<options>] {record <command> |report}",
  26         NULL
  27 };
  28
  29 static int __cmd_record(int argc, const char **argv)
  30 {
  31         int rec_argc, i = 0, j;
  32         const char **rec_argv;
  33         char event[64];
  34         int ret;
  35
  36         rec_argc = argc + 4;
  37         rec_argv = calloc(rec_argc + 1, sizeof(char *));
  38         if (!rec_argv)
  39                 return -1;
  40
  41         rec_argv[i++] = strdup("record");
  42         if (!strcmp(mem_operation, MEM_OPERATION_LOAD))
  43                 rec_argv[i++] = strdup("-W");
  44         rec_argv[i++] = strdup("-d");
  45         rec_argv[i++] = strdup("-e");
  46
  47         if (strcmp(mem_operation, MEM_OPERATION_LOAD))
  48                 sprintf(event, "cpu/mem-stores/pp");
  49         else
  50                 sprintf(event, "cpu/mem-loads/pp");
  51
  52         rec_argv[i++] = strdup(event);
  53         for (j = 1; j < argc; j++, i++)
  54                 rec_argv[i] = argv[j];
  55
  56         ret = cmd_record(i, rec_argv, NULL);
  57         free(rec_argv);
  58         return ret;
  59 }
  60
  61 static int
  62 dump_raw_samples(struct perf_tool *tool,
  63                  union perf_event *event,
  64                  struct perf_sample *sample,
  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 __maybe_unused,
 115                                 struct machine *machine)
 116 {
 117         return dump_raw_samples(tool, event, sample, machine);
 118 }
 119
 120 static int report_raw_events(struct perf_mem *mem)
 121 {
 122         struct perf_data_file file = {
 123                 .path = input_name,
 124                 .mode = PERF_DATA_MODE_READ,
 125         };
 126         int err = -EINVAL;
 127         int ret;
 128         struct perf_session *session = perf_session__new(&file, false,
 129                                                          &mem->tool);
 130
 131         if (session == NULL)
 132                 return -ENOMEM;
 133
 134         if (mem->cpu_list) {
 135                 ret = perf_session__cpu_bitmap(session, mem->cpu_list,
 136                                                mem->cpu_bitmap);
 137                 if (ret)
 138                         goto out_delete;
 139         }
 140
 141         if (symbol__init() < 0)
 142                 return -1;
 143
 144         printf("# PID, TID, IP, ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n");
 145
 146         err = perf_session__process_events(session, &mem->tool);
 147         if (err)
 148                 return err;
 149
 150         return 0;
 151
 152 out_delete:
 153         perf_session__delete(session);
 154         return err;
 155 }
 156
 157 static int report_events(int argc, const char **argv, struct perf_mem *mem)
 158 {
 159         const char **rep_argv;
 160         int ret, i = 0, j, rep_argc;
 161
 162         if (mem->dump_raw)
 163                 return report_raw_events(mem);
 164
 165         rep_argc = argc + 3;
 166         rep_argv = calloc(rep_argc + 1, sizeof(char *));
 167         if (!rep_argv)
 168                 return -1;
 169
 170         rep_argv[i++] = strdup("report");
 171         rep_argv[i++] = strdup("--mem-mode");
 172         rep_argv[i++] = strdup("-n"); /* display number of samples */
 173
 174         /*
 175          * there is no weight (cost) associated with stores, so don't print
 176          * the column
 177          */
 178         if (strcmp(mem_operation, MEM_OPERATION_LOAD))
 179                 rep_argv[i++] = strdup("--sort=mem,sym,dso,symbol_daddr,"
 180                                        "dso_daddr,tlb,locked");
 181
 182         for (j = 1; j < argc; j++, i++)
 183                 rep_argv[i] = argv[j];
 184
 185         ret = cmd_report(i, rep_argv, NULL);
 186         free(rep_argv);
 187         return ret;
 188 }
 189
 190 int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused)
 191 {
 192         struct stat st;
 193         struct perf_mem mem = {
 194                 .tool = {
 195                         .sample         = process_sample_event,
 196                         .mmap           = perf_event__process_mmap,
 197                         .mmap2          = perf_event__process_mmap2,
 198                         .comm           = perf_event__process_comm,
 199                         .lost           = perf_event__process_lost,
 200                         .fork           = perf_event__process_fork,
 201                         .build_id       = perf_event__process_build_id,
 202                         .ordered_samples = true,
 203                 },
 204                 .input_name              = "perf.data",
 205         };
 206         const struct option mem_options[] = {
 207         OPT_STRING('t', "type", &mem_operation,
 208                    "type", "memory operations(load/store)"),
 209         OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw,
 210                     "dump raw samples in ASCII"),
 211         OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved,
 212                     "Only display entries resolved to a symbol"),
 213         OPT_STRING('i', "input", &input_name, "file",
 214                    "input file name"),
 215         OPT_STRING('C', "cpu", &mem.cpu_list, "cpu",
 216                    "list of cpus to profile"),
 217         OPT_STRING('x', "field-separator", &symbol_conf.field_sep,
 218                    "separator",
 219                    "separator for columns, no spaces will be added"
 220                    " between columns '.' is reserved."),
 221         OPT_END()
 222         };
 223
 224         argc = parse_options(argc, argv, mem_options, mem_usage,
 225                              PARSE_OPT_STOP_AT_NON_OPTION);
 226
 227         if (!argc || !(strncmp(argv[0], "rec", 3) || mem_operation))
 228                 usage_with_options(mem_usage, mem_options);
 229
 230         if (!mem.input_name || !strlen(mem.input_name)) {
 231                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
 232                         mem.input_name = "-";
 233                 else
 234                         mem.input_name = "perf.data";
 235         }
 236
 237         if (!strncmp(argv[0], "rec", 3))
 238                 return __cmd_record(argc, argv);
 239         else if (!strncmp(argv[0], "rep", 3))
 240                 return report_events(argc, argv, &mem);
 241         else
 242                 usage_with_options(mem_usage, mem_options);
 243
 244         return 0;
 245 }