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 int __cmd_record(int argc, const char **argv)
  25 {
  26         int rec_argc, i = 0, j;
  27         const char **rec_argv;
  28         char event[64];
  29         int ret;
  30
  31         rec_argc = argc + 4;
  32         rec_argv = calloc(rec_argc + 1, sizeof(char *));
  33         if (!rec_argv)
  34                 return -1;
  35
  36         rec_argv[i++] = strdup("record");
  37         if (!strcmp(mem_operation, MEM_OPERATION_LOAD))
  38                 rec_argv[i++] = strdup("-W");
  39         rec_argv[i++] = strdup("-d");
  40         rec_argv[i++] = strdup("-e");
  41
  42         if (strcmp(mem_operation, MEM_OPERATION_LOAD))
  43                 sprintf(event, "cpu/mem-stores/pp");
  44         else
  45                 sprintf(event, "cpu/mem-loads/pp");
  46
  47         rec_argv[i++] = strdup(event);
  48         for (j = 1; j < argc; j++, i++)
  49                 rec_argv[i] = argv[j];
  50
  51         ret = cmd_record(i, rec_argv, NULL);
  52         free(rec_argv);
  53         return ret;
  54 }
  55
  56 static int
  57 dump_raw_samples(struct perf_tool *tool,
  58                  union perf_event *event,
  59                  struct perf_sample *sample,
  60                  struct machine *machine)
  61 {
  62         struct perf_mem *mem = container_of(tool, struct perf_mem, tool);
  63         struct addr_location al;
  64         const char *fmt;
  65
  66         if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
  67                 fprintf(stderr, "problem processing %d event, skipping it.\n",
  68                                 event->header.type);
  69                 return -1;
  70         }
  71
  72         if (al.filtered || (mem->hide_unresolved && al.sym == NULL))
  73                 return 0;
  74
  75         if (al.map != NULL)
  76                 al.map->dso->hit = 1;
  77
  78         if (symbol_conf.field_sep) {
  79                 fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s%"PRIu64
  80                       "%s0x%"PRIx64"%s%s:%s\n";
  81         } else {
  82                 fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64
  83                       "%s%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n";
  84                 symbol_conf.field_sep = " ";
  85         }
  86
  87         printf(fmt,
  88                 sample->pid,
  89                 symbol_conf.field_sep,
  90                 sample->tid,
  91                 symbol_conf.field_sep,
  92                 sample->ip,
  93                 symbol_conf.field_sep,
  94                 sample->addr,
  95                 symbol_conf.field_sep,
  96                 sample->weight,
  97                 symbol_conf.field_sep,
  98                 sample->data_src,
  99                 symbol_conf.field_sep,
 100                 al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???",
 101                 al.sym ? al.sym->name : "???");
 102
 103         return 0;
 104 }
 105
 106 static int process_sample_event(struct perf_tool *tool,
 107                                 union perf_event *event,
 108                                 struct perf_sample *sample,
 109                                 struct perf_evsel *evsel __maybe_unused,
 110                                 struct machine *machine)
 111 {
 112         return dump_raw_samples(tool, event, sample, machine);
 113 }
 114
 115 static int report_raw_events(struct perf_mem *mem)
 116 {
 117         struct perf_data_file file = {
 118                 .path = input_name,
 119                 .mode = PERF_DATA_MODE_READ,
 120         };
 121         int err = -EINVAL;
 122         int ret;
 123         struct perf_session *session = perf_session__new(&file, false,
 124                                                          &mem->tool);
 125
 126         if (session == NULL)
 127                 return -ENOMEM;
 128
 129         if (mem->cpu_list) {
 130                 ret = perf_session__cpu_bitmap(session, mem->cpu_list,
 131                                                mem->cpu_bitmap);
 132                 if (ret)
 133                         goto out_delete;
 134         }
 135
 136         if (symbol__init() < 0)
 137                 return -1;
 138
 139         printf("# PID, TID, IP, ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n");
 140
 141         err = perf_session__process_events(session, &mem->tool);
 142         if (err)
 143                 return err;
 144
 145         return 0;
 146
 147 out_delete:
 148         perf_session__delete(session);
 149         return err;
 150 }
 151
 152 static int report_events(int argc, const char **argv, struct perf_mem *mem)
 153 {
 154         const char **rep_argv;
 155         int ret, i = 0, j, rep_argc;
 156
 157         if (mem->dump_raw)
 158                 return report_raw_events(mem);
 159
 160         rep_argc = argc + 3;
 161         rep_argv = calloc(rep_argc + 1, sizeof(char *));
 162         if (!rep_argv)
 163                 return -1;
 164
 165         rep_argv[i++] = strdup("report");
 166         rep_argv[i++] = strdup("--mem-mode");
 167         rep_argv[i++] = strdup("-n"); /* display number of samples */
 168
 169         /*
 170          * there is no weight (cost) associated with stores, so don't print
 171          * the column
 172          */
 173         if (strcmp(mem_operation, MEM_OPERATION_LOAD))
 174                 rep_argv[i++] = strdup("--sort=mem,sym,dso,symbol_daddr,"
 175                                        "dso_daddr,tlb,locked");
 176
 177         for (j = 1; j < argc; j++, i++)
 178                 rep_argv[i] = argv[j];
 179
 180         ret = cmd_report(i, rep_argv, NULL);
 181         free(rep_argv);
 182         return ret;
 183 }
 184
 185 int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused)
 186 {
 187         struct stat st;
 188         struct perf_mem mem = {
 189                 .tool = {
 190                         .sample         = process_sample_event,
 191                         .mmap           = perf_event__process_mmap,
 192                         .mmap2          = perf_event__process_mmap2,
 193                         .comm           = perf_event__process_comm,
 194                         .lost           = perf_event__process_lost,
 195                         .fork           = perf_event__process_fork,
 196                         .build_id       = perf_event__process_build_id,
 197                         .ordered_samples = true,
 198                 },
 199                 .input_name              = "perf.data",
 200         };
 201         const struct option mem_options[] = {
 202         OPT_STRING('t', "type", &mem_operation,
 203                    "type", "memory operations(load/store)"),
 204         OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw,
 205                     "dump raw samples in ASCII"),
 206         OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved,
 207                     "Only display entries resolved to a symbol"),
 208         OPT_STRING('i', "input", &input_name, "file",
 209                    "input file name"),
 210         OPT_STRING('C', "cpu", &mem.cpu_list, "cpu",
 211                    "list of cpus to profile"),
 212         OPT_STRING('x', "field-separator", &symbol_conf.field_sep,
 213                    "separator",
 214                    "separator for columns, no spaces will be added"
 215                    " between columns '.' is reserved."),
 216         OPT_END()
 217         };
 218         const char *const mem_subcommands[] = { "record", "report", NULL };
 219         const char *mem_usage[] = {
 220                 NULL,
 221                 NULL
 222         };
 223
 224
 225         argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands,
 226                                         mem_usage, PARSE_OPT_STOP_AT_NON_OPTION);
 227
 228         if (!argc || !(strncmp(argv[0], "rec", 3) || mem_operation))
 229                 usage_with_options(mem_usage, mem_options);
 230
 231         if (!mem.input_name || !strlen(mem.input_name)) {
 232                 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
 233                         mem.input_name = "-";
 234                 else
 235                         mem.input_name = "perf.data";
 236         }
 237
 238         if (!strncmp(argv[0], "rec", 3))
 239                 return __cmd_record(argc, argv);
 240         else if (!strncmp(argv[0], "rep", 3))
 241                 return report_events(argc, argv, &mem);
 242         else
 243                 usage_with_options(mem_usage, mem_options);
 244
 245         return 0;
 246 }