kernel/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_subcommands[] = { "convert", NULL };
  26
  27 static const char *data_usage[] = {
  28         "perf data [<common options>] <command> [<options>]",
  29         NULL
  30 };
  31
  32 static void print_usage(void)
  33 {
  34         struct data_cmd *cmd;
  35
  36         printf("Usage:\n");
  37         printf("\t%s\n\n", data_usage[0]);
  38         printf("\tAvailable commands:\n");
  39
  40         for_each_cmd(cmd) {
  41                 printf("\t %s\t- %s\n", cmd->name, cmd->summary);
  42         }
  43
  44         printf("\n");
  45 }
  46
  47 static const char * const data_convert_usage[] = {
  48         "perf data convert [<options>]",
  49         NULL
  50 };
  51
  52 static int cmd_data_convert(int argc, const char **argv,
  53                             const char *prefix __maybe_unused)
  54 {
  55         const char *to_ctf     = NULL;
  56         bool force = false;
  57         const struct option options[] = {
  58                 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
  59                 OPT_STRING('i', "input", &input_name, "file", "input file name"),
  60 #ifdef HAVE_LIBBABELTRACE_SUPPORT
  61                 OPT_STRING(0, "to-ctf", &to_ctf, NULL, "Convert to CTF format"),
  62 #endif
  63                 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
  64                 OPT_END()
  65         };
  66
  67 #ifndef HAVE_LIBBABELTRACE_SUPPORT
  68         pr_err("No conversion support compiled in.\n");
  69         return -1;
  70 #endif
  71
  72         argc = parse_options(argc, argv, options,
  73                              data_convert_usage, 0);
  74         if (argc) {
  75                 usage_with_options(data_convert_usage, options);
  76                 return -1;
  77         }
  78
  79         if (to_ctf) {
  80 #ifdef HAVE_LIBBABELTRACE_SUPPORT
  81                 return bt_convert__perf2ctf(input_name, to_ctf, force);
  82 #else
  83                 pr_err("The libbabeltrace support is not compiled in.\n");
  84                 return -1;
  85 #endif
  86         }
  87
  88         return 0;
  89 }
  90
  91 static struct data_cmd data_cmds[] = {
  92         { "convert", "converts data file between formats", cmd_data_convert },
  93         { .name = NULL, },
  94 };
  95
  96 int cmd_data(int argc, const char **argv, const char *prefix)
  97 {
  98         struct data_cmd *cmd;
  99         const char *cmdstr;
 100
 101         /* No command specified. */
 102         if (argc < 2)
 103                 goto usage;
 104
 105         argc = parse_options_subcommand(argc, argv, data_options, data_subcommands, data_usage,
 106                              PARSE_OPT_STOP_AT_NON_OPTION);
 107         if (argc < 1)
 108                 goto usage;
 109
 110         cmdstr = argv[0];
 111
 112         for_each_cmd(cmd) {
 113                 if (strcmp(cmd->name, cmdstr))
 114                         continue;
 115
 116                 return cmd->fn(argc, argv, prefix);
 117         }
 118
 119         pr_err("Unknown command: %s\n", cmdstr);
 120 usage:
 121         print_usage();
 122         return -1;
 123 }