root/tools/perf/builtin-data.c

DEFINITIONS

1. print_usage
2. cmd_data_convert
3. cmd_data

   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 #include "data-convert-bt.h"
  11 
  12 typedef int (*data_cmd_fn_t)(int argc, const char **argv);
  13 
  14 struct data_cmd {
  15         const char      *name;
  16         const char      *summary;
  17         data_cmd_fn_t   fn;
  18 };
  19 
  20 static struct data_cmd data_cmds[];
  21 
  22 #define for_each_cmd(cmd) \
  23         for (cmd = data_cmds; cmd && cmd->name; cmd++)
  24 
  25 static const struct option data_options[] = {
  26         OPT_END()
  27 };
  28 
  29 static const char * const data_subcommands[] = { "convert", NULL };
  30 
  31 static const char *data_usage[] = {
  32         "perf data [<common options>] <command> [<options>]",
  33         NULL
  34 };
  35 
  36 static void print_usage(void)
  37 {
  38         struct data_cmd *cmd;
  39 
  40         printf("Usage:\n");
  41         printf("\t%s\n\n", data_usage[0]);
  42         printf("\tAvailable commands:\n");
  43 
  44         for_each_cmd(cmd) {
  45                 printf("\t %s\t- %s\n", cmd->name, cmd->summary);
  46         }
  47 
  48         printf("\n");
  49 }
  50 
  51 static const char * const data_convert_usage[] = {
  52         "perf data convert [<options>]",
  53         NULL
  54 };
  55 
  56 static int cmd_data_convert(int argc, const char **argv)
  57 {
  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 #ifdef HAVE_LIBBABELTRACE_SUPPORT
  67                 OPT_STRING(0, "to-ctf", &to_ctf, NULL, "Convert to CTF format"),
  68 #endif
  69                 OPT_BOOLEAN('f', "force", &opts.force, "don't complain, do it"),
  70                 OPT_BOOLEAN(0, "all", &opts.all, "Convert all events"),
  71                 OPT_END()
  72         };
  73 
  74 #ifndef HAVE_LIBBABELTRACE_SUPPORT
  75         pr_err("No conversion support compiled in. perf should be compiled with environment variables LIBBABELTRACE=1 and LIBBABELTRACE_DIR=/path/to/libbabeltrace/\n");
  76         return -1;
  77 #endif
  78 
  79         argc = parse_options(argc, argv, options,
  80                              data_convert_usage, 0);
  81         if (argc) {
  82                 usage_with_options(data_convert_usage, options);
  83                 return -1;
  84         }
  85 
  86         if (to_ctf) {
  87 #ifdef HAVE_LIBBABELTRACE_SUPPORT
  88                 return bt_convert__perf2ctf(input_name, to_ctf, &opts);
  89 #else
  90                 pr_err("The libbabeltrace support is not compiled in.\n");
  91                 return -1;
  92 #endif
  93         }
  94 
  95         return 0;
  96 }
  97 
  98 static struct data_cmd data_cmds[] = {
  99         { "convert", "converts data file between formats", cmd_data_convert },
 100         { .name = NULL, },
 101 };
 102 
 103 int cmd_data(int argc, const char **argv)
 104 {
 105         struct data_cmd *cmd;
 106         const char *cmdstr;
 107 
 108         /* No command specified. */
 109         if (argc < 2)
 110                 goto usage;
 111 
 112         argc = parse_options_subcommand(argc, argv, data_options, data_subcommands, data_usage,
 113                              PARSE_OPT_STOP_AT_NON_OPTION);
 114         if (argc < 1)
 115                 goto usage;
 116 
 117         cmdstr = argv[0];
 118 
 119         for_each_cmd(cmd) {
 120                 if (strcmp(cmd->name, cmdstr))
 121                         continue;
 122 
 123                 return cmd->fn(argc, argv);
 124         }
 125 
 126         pr_err("Unknown command: %s\n", cmdstr);
 127 usage:
 128         print_usage();
 129         return -1;
 130 }