tools/perf/builtin-data.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/compiler.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include "builtin.h"
   6 #include "perf.h"
   7 #include "debug.h"
   8 #include <subcmd/parse-options.h>
   9 #include "data-convert.h"
  10
  11 typedef int (*data_cmd_fn_t)(int argc, const char **argv);
  12
  13 struct data_cmd {
  14         const char      *name;
  15         const char      *summary;
  16         data_cmd_fn_t   fn;
  17 };
  18
  19 static struct data_cmd data_cmds[];
  20
  21 #define for_each_cmd(cmd) \
  22         for (cmd = data_cmds; cmd && cmd->name; cmd++)
  23
  24 static const struct option data_options[] = {
  25         OPT_END()
  26 };
  27
  28 static const char * const data_subcommands[] = { "convert", NULL };
  29
  30 static const char *data_usage[] = {
  31         "perf data [<common options>] <command> [<options>]",
  32         NULL
  33 };
  34
  35 static void print_usage(void)
  36 {
  37         struct data_cmd *cmd;
  38
  39         printf("Usage:\n");
  40         printf("\t%s\n\n", data_usage[0]);
  41         printf("\tAvailable commands:\n");
  42
  43         for_each_cmd(cmd) {
  44                 printf("\t %s\t- %s\n", cmd->name, cmd->summary);
  45         }
  46
  47         printf("\n");
  48 }
  49
  50 static const char * const data_convert_usage[] = {
  51         "perf data convert [<options>]",
  52         NULL
  53 };
  54
  55 static int cmd_data_convert(int argc, const char **argv)
  56 {
  57         const char *to_json = NULL;
  58         const char *to_ctf = NULL;
  59         struct perf_data_convert_opts opts = {
  60                 .force = false,
  61                 .all = false,
  62         };
  63         const struct option options[] = {
  64                 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
  65                 OPT_STRING('i', "input", &input_name, "file", "input file name"),
  66                 OPT_STRING(0, "to-json", &to_json, NULL, "Convert to JSON format"),
  67 #ifdef HAVE_LIBBABELTRACE_SUPPORT
  68                 OPT_STRING(0, "to-ctf", &to_ctf, NULL, "Convert to CTF format"),
  69                 OPT_BOOLEAN(0, "tod", &opts.tod, "Convert time to wall clock time"),
  70 #endif
  71                 OPT_BOOLEAN('f', "force", &opts.force, "don't complain, do it"),
  72                 OPT_BOOLEAN(0, "all", &opts.all, "Convert all events"),
  73                 OPT_END()
  74         };
  75
  76         argc = parse_options(argc, argv, options,
  77                              data_convert_usage, 0);
  78         if (argc) {
  79                 usage_with_options(data_convert_usage, options);
  80                 return -1;
  81         }
  82
  83         if (to_json && to_ctf) {
  84                 pr_err("You cannot specify both --to-ctf and --to-json.\n");
  85                 return -1;
  86         }
  87         if (!to_json && !to_ctf) {
  88                 pr_err("You must specify one of --to-ctf or --to-json.\n");
  89                 return -1;
  90         }
  91
  92         if (to_json)
  93                 return bt_convert__perf2json(input_name, to_json, &opts);
  94
  95         if (to_ctf) {
  96 #ifdef HAVE_LIBBABELTRACE_SUPPORT
  97                 return bt_convert__perf2ctf(input_name, to_ctf, &opts);
  98 #else
  99                 pr_err("The libbabeltrace support is not compiled in. perf should be "
 100                        "compiled with environment variables LIBBABELTRACE=1 and "
 101                        "LIBBABELTRACE_DIR=/path/to/libbabeltrace/\n");
 102                 return -1;
 103 #endif
 104         }
 105
 106         return 0;
 107 }
 108
 109 static struct data_cmd data_cmds[] = {
 110         { "convert", "converts data file between formats", cmd_data_convert },
 111         { .name = NULL, },
 112 };
 113
 114 int cmd_data(int argc, const char **argv)
 115 {
 116         struct data_cmd *cmd;
 117         const char *cmdstr;
 118
 119         /* No command specified. */
 120         if (argc < 2)
 121                 goto usage;
 122
 123         argc = parse_options_subcommand(argc, argv, data_options, data_subcommands, data_usage,
 124                              PARSE_OPT_STOP_AT_NON_OPTION);
 125         if (argc < 1)
 126                 goto usage;
 127
 128         cmdstr = argv[0];
 129
 130         for_each_cmd(cmd) {
 131                 if (strcmp(cmd->name, cmdstr))
 132                         continue;
 133
 134                 return cmd->fn(argc, argv);
 135         }
 136
 137         pr_err("Unknown command: %s\n", cmdstr);
 138 usage:
 139         print_usage();
 140         return -1;
 141 }