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 char * const data_subcommands[] = { "convert", NULL };
  25
  26 static const char *data_usage[] = {
  27         "perf data convert [<options>]",
  28         NULL
  29 };
  30
  31 const char *to_json;
  32 const char *to_ctf;
  33 struct perf_data_convert_opts opts = {
  34         .force = false,
  35         .all = false,
  36 };
  37
  38 const struct option data_options[] = {
  39                 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
  40                 OPT_STRING('i', "input", &input_name, "file", "input file name"),
  41                 OPT_STRING(0, "to-json", &to_json, NULL, "Convert to JSON format"),
  42 #ifdef HAVE_LIBBABELTRACE_SUPPORT
  43                 OPT_STRING(0, "to-ctf", &to_ctf, NULL, "Convert to CTF format"),
  44                 OPT_BOOLEAN(0, "tod", &opts.tod, "Convert time to wall clock time"),
  45 #endif
  46                 OPT_BOOLEAN('f', "force", &opts.force, "don't complain, do it"),
  47                 OPT_BOOLEAN(0, "all", &opts.all, "Convert all events"),
  48                 OPT_END()
  49         };
  50
  51 static int cmd_data_convert(int argc, const char **argv)
  52 {
  53
  54         argc = parse_options(argc, argv, data_options,
  55                              data_usage, 0);
  56         if (argc) {
  57                 usage_with_options(data_usage, data_options);
  58                 return -1;
  59         }
  60
  61         if (to_json && to_ctf) {
  62                 pr_err("You cannot specify both --to-ctf and --to-json.\n");
  63                 return -1;
  64         }
  65 #ifdef HAVE_LIBBABELTRACE_SUPPORT
  66         if (!to_json && !to_ctf) {
  67                 pr_err("You must specify one of --to-ctf or --to-json.\n");
  68                 return -1;
  69         }
  70 #else
  71         if (!to_json) {
  72                 pr_err("You must specify --to-json.\n");
  73         return -1;
  74 }
  75 #endif
  76
  77         if (to_json)
  78                 return bt_convert__perf2json(input_name, to_json, &opts);
  79
  80         if (to_ctf) {
  81 #if defined(HAVE_LIBBABELTRACE_SUPPORT) && defined(HAVE_LIBTRACEEVENT)
  82                 return bt_convert__perf2ctf(input_name, to_ctf, &opts);
  83 #else
  84                 pr_err("The libbabeltrace support is not compiled in. perf should be "
  85                        "compiled with environment variables LIBBABELTRACE=1 and "
  86                        "LIBBABELTRACE_DIR=/path/to/libbabeltrace/.\n"
  87                        "Check also if libbtraceevent devel files are available.\n");
  88                 return -1;
  89 #endif
  90         }
  91
  92         return 0;
  93 }
  94
  95 static struct data_cmd data_cmds[] = {
  96         { "convert", "converts data file between formats", cmd_data_convert },
  97         { .name = NULL, },
  98 };
  99
 100 int cmd_data(int argc, const char **argv)
 101 {
 102         struct data_cmd *cmd;
 103         const char *cmdstr;
 104
 105         argc = parse_options_subcommand(argc, argv, data_options, data_subcommands, data_usage,
 106                              PARSE_OPT_STOP_AT_NON_OPTION);
 107
 108         if (!argc) {
 109                 usage_with_options(data_usage, data_options);
 110                 return -1;
 111         }
 112
 113         cmdstr = argv[0];
 114
 115         for_each_cmd(cmd) {
 116                 if (strcmp(cmd->name, cmdstr))
 117                         continue;
 118
 119                 return cmd->fn(argc, argv);
 120         }
 121
 122         pr_err("Unknown command: %s\n", cmdstr);
 123         usage_with_options(data_usage, data_options);
 124         return -1;
 125 }