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