tools/perf/builtin-config.c

   1 /*
   2  * builtin-config.c
   3  *
   4  * Copyright (C) 2015, Taeung Song <[email protected]>
   5  *
   6  */
   7 #include "builtin.h"
   8
   9 #include "perf.h"
  10
  11 #include "util/cache.h"
  12 #include <subcmd/parse-options.h>
  13 #include "util/util.h"
  14 #include "util/debug.h"
  15
  16 static const char * const config_usage[] = {
  17         "perf config [options]",
  18         NULL
  19 };
  20
  21 enum actions {
  22         ACTION_LIST = 1
  23 } actions;
  24
  25 static struct option config_options[] = {
  26         OPT_SET_UINT('l', "list", &actions,
  27                      "show current config variables", ACTION_LIST),
  28         OPT_END()
  29 };
  30
  31 static int show_config(const char *key, const char *value,
  32                        void *cb __maybe_unused)
  33 {
  34         if (value)
  35                 printf("%s=%s\n", key, value);
  36         else
  37                 printf("%s\n", key);
  38
  39         return 0;
  40 }
  41
  42 int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused)
  43 {
  44         int ret = 0;
  45
  46         argc = parse_options(argc, argv, config_options, config_usage,
  47                              PARSE_OPT_STOP_AT_NON_OPTION);
  48
  49         switch (actions) {
  50         case ACTION_LIST:
  51                 if (argc) {
  52                         pr_err("Error: takes no arguments\n");
  53                         parse_options_usage(config_usage, config_options, "l", 1);
  54                 } else {
  55                         ret = perf_config(show_config, NULL);
  56                         if (ret < 0)
  57                                 pr_err("Nothing configured, "
  58                                        "please check your ~/.perfconfig file\n");
  59                 }
  60                 break;
  61         default:
  62                 usage_with_options(config_usage, config_options);
  63         }
  64
  65         return ret;
  66 }