From 30862f2c5725c46afcfab5af710fdf5163bf0f81 Mon Sep 17 00:00:00 2001 From: Taeung Song Date: Tue, 17 Nov 2015 22:53:21 +0900 Subject: perf tools: Add 'perf config' command The perf configuration file contains many variables to change various aspects of each of its tools, including output, disk usage, etc. But looking at the state of configuration is difficult and there's no documentation about config variables except for the variables in perfconfig.example exist. So this patch adds a 'perf-config' command with a '--list' option. perf config [options] display current perf config variables. # perf config -l | --list Signed-off-by: Taeung Song Acked-by: Namhyung Kim Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1447768424-17327-1-git-send-email-treeze.taeung@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-config.c | 66 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 tools/perf/builtin-config.c (limited to 'tools/perf/builtin-config.c') diff --git a/tools/perf/builtin-config.c b/tools/perf/builtin-config.c new file mode 100644 index 000000000000..427ea7a705b8 --- /dev/null +++ b/tools/perf/builtin-config.c @@ -0,0 +1,66 @@ +/* + * builtin-config.c + * + * Copyright (C) 2015, Taeung Song + * + */ +#include "builtin.h" + +#include "perf.h" + +#include "util/cache.h" +#include "util/parse-options.h" +#include "util/util.h" +#include "util/debug.h" + +static const char * const config_usage[] = { + "perf config [options]", + NULL +}; + +enum actions { + ACTION_LIST = 1 +} actions; + +static struct option config_options[] = { + OPT_SET_UINT('l', "list", &actions, + "show current config variables", ACTION_LIST), + OPT_END() +}; + +static int show_config(const char *key, const char *value, + void *cb __maybe_unused) +{ + if (value) + printf("%s=%s\n", key, value); + else + printf("%s\n", key); + + return 0; +} + +int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused) +{ + int ret = 0; + + argc = parse_options(argc, argv, config_options, config_usage, + PARSE_OPT_STOP_AT_NON_OPTION); + + switch (actions) { + case ACTION_LIST: + if (argc) { + pr_err("Error: takes no arguments\n"); + parse_options_usage(config_usage, config_options, "l", 1); + } else { + ret = perf_config(show_config, NULL); + if (ret < 0) + pr_err("Nothing configured, " + "please check your ~/.perfconfig file\n"); + } + break; + default: + usage_with_options(config_usage, config_options); + } + + return ret; +} -- cgit v1.2.1