tools/perf/builtin-data.c

   1 #include <linux/compiler.h>
   2 #include "builtin.h"
   3 #include "perf.h"
   4 #include "debug.h"
   5 #include "parse-options.h"
   6 #include "data-convert-bt.h"
   7
   8 typedef int (*data_cmd_fn_t)(int argc, const char **argv, const char *prefix);
   9
  10 struct data_cmd {
  11         const char      *name;
  12         const char      *summary;
  13         data_cmd_fn_t   fn;
  14 };
  15
  16 static struct data_cmd data_cmds[];
  17
  18 #define for_each_cmd(cmd) \
  19         for (cmd = data_cmds; cmd && cmd->name; cmd++)
  20
  21 static const struct option data_options[] = {
  22         OPT_END()
  23 };
  24
  25 static const char * const data_usage[] = {
  26         "perf data [<common options>] <command> [<options>]",
  27         NULL
  28 };
  29
  30 static void print_usage(void)
  31 {
  32         struct data_cmd *cmd;
  33
  34         printf("Usage:\n");
  35         printf("\t%s\n\n", data_usage[0]);
  36         printf("\tAvailable commands:\n");
  37
  38         for_each_cmd(cmd) {
  39                 printf("\t %s\t- %s\n", cmd->name, cmd->summary);
  40         }
  41
  42         printf("\n");
  43 }
  44
  45 static const char * const data_convert_usage[] = {
  46         "perf data convert [<options>]",
  47         NULL
  48 };
  49
  50 static int cmd_data_convert(int argc, const char **argv,
  51                             const char *prefix __maybe_unused)
  52 {
  53         const char *to_ctf     = NULL;
  54         const struct option options[] = {
  55                 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
  56                 OPT_STRING('i', "input", &input_name, "file", "input file name"),
  57 #ifdef HAVE_LIBBABELTRACE_SUPPORT
  58                 OPT_STRING(0, "to-ctf", &to_ctf, NULL, "Convert to CTF format"),
  59 #endif
  60                 OPT_END()
  61         };
  62
  63 #ifndef HAVE_LIBBABELTRACE_SUPPORT
  64         pr_err("No conversion support compiled in.\n");
  65         return -1;
  66 #endif
  67
  68         argc = parse_options(argc, argv, options,
  69                              data_convert_usage, 0);
  70         if (argc) {
  71                 usage_with_options(data_convert_usage, options);
  72                 return -1;
  73         }
  74
  75         if (to_ctf) {
  76 #ifdef HAVE_LIBBABELTRACE_SUPPORT
  77                 return bt_convert__perf2ctf(input_name, to_ctf);
  78 #else
  79                 pr_err("The libbabeltrace support is not compiled in.\n");
  80                 return -1;
  81 #endif
  82         }
  83
  84         return 0;
  85 }
  86
  87 static struct data_cmd data_cmds[] = {
  88         { "convert", "converts data file between formats", cmd_data_convert },
  89         { NULL },
  90 };
  91
  92 int cmd_data(int argc, const char **argv, const char *prefix)
  93 {
  94         struct data_cmd *cmd;
  95         const char *cmdstr;
  96
  97         /* No command specified. */
  98         if (argc < 2)
  99                 goto usage;
 100
 101         argc = parse_options(argc, argv, data_options, data_usage,
 102                              PARSE_OPT_STOP_AT_NON_OPTION);
 103         if (argc < 1)
 104                 goto usage;
 105
 106         cmdstr = argv[0];
 107
 108         for_each_cmd(cmd) {
 109                 if (strcmp(cmd->name, cmdstr))
 110                         continue;
 111
 112                 return cmd->fn(argc, argv, prefix);
 113         }
 114
 115         pr_err("Unknown command: %s\n", cmdstr);
 116 usage:
 117         print_usage();
 118         return -1;
 119 }