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authorTaeung Song <treeze.taeung@gmail.com>2015-11-17 22:53:21 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-11-23 18:31:24 -0300
commit30862f2c5725c46afcfab5af710fdf5163bf0f81 (patch)
treeabac32a35418ba8d1c8ab601c9ae9713a40b3236 /tools/perf/builtin-config.c
parent8bd508b001629a5d836987d9a0702a6bfc4fc705 (diff)
downloadlinux-30862f2c5725c46afcfab5af710fdf5163bf0f81.tar.bz2
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 <treeze.taeung@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1447768424-17327-1-git-send-email-treeze.taeung@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-config.c')
-rw-r--r--tools/perf/builtin-config.c66
1 files changed, 66 insertions, 0 deletions
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 <treeze.taeung@gmail.com>
+ *
+ */
+#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;
+}