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Date: Thu, 26 Nov 2015 00:20:01 -0800
From: tip-bot for Taeung Song <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: tglx@...utronix.de, jolsa@...hat.com, linux-kernel@...r.kernel.org,
mingo@...nel.org, hpa@...or.com, treeze.taeung@...il.com,
namhyung@...nel.org, acme@...hat.com
Subject: [tip:perf/core] perf tools: Add 'perf config' command
Commit-ID: 30862f2c5725c46afcfab5af710fdf5163bf0f81
Gitweb: http://git.kernel.org/tip/30862f2c5725c46afcfab5af710fdf5163bf0f81
Author: Taeung Song <treeze.taeung@...il.com>
AuthorDate: Tue, 17 Nov 2015 22:53:21 +0900
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 23 Nov 2015 18:31:24 -0300
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@...il.com>
Acked-by: Namhyung Kim <namhyung@...nel.org>
Cc: Jiri Olsa <jolsa@...hat.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@...hat.com>
---
tools/perf/Build | 1 +
tools/perf/builtin-config.c | 66 +++++++++++++++++++++++++++++++++++++++++++++
tools/perf/builtin.h | 1 +
tools/perf/command-list.txt | 1 +
tools/perf/perf.c | 1 +
5 files changed, 70 insertions(+)
diff --git a/tools/perf/Build b/tools/perf/Build
index 7223745..2c7aaf2 100644
--- a/tools/perf/Build
+++ b/tools/perf/Build
@@ -1,5 +1,6 @@
perf-y += builtin-bench.o
perf-y += builtin-annotate.o
+perf-y += builtin-config.o
perf-y += builtin-diff.o
perf-y += builtin-evlist.o
perf-y += builtin-help.o
diff --git a/tools/perf/builtin-config.c b/tools/perf/builtin-config.c
new file mode 100644
index 0000000..427ea7a
--- /dev/null
+++ b/tools/perf/builtin-config.c
@@ -0,0 +1,66 @@
+/*
+ * builtin-config.c
+ *
+ * Copyright (C) 2015, Taeung Song <treeze.taeung@...il.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;
+}
diff --git a/tools/perf/builtin.h b/tools/perf/builtin.h
index 3688ad2..3f871b5 100644
--- a/tools/perf/builtin.h
+++ b/tools/perf/builtin.h
@@ -17,6 +17,7 @@ extern int cmd_annotate(int argc, const char **argv, const char *prefix);
extern int cmd_bench(int argc, const char **argv, const char *prefix);
extern int cmd_buildid_cache(int argc, const char **argv, const char *prefix);
extern int cmd_buildid_list(int argc, const char **argv, const char *prefix);
+extern int cmd_config(int argc, const char **argv, const char *prefix);
extern int cmd_diff(int argc, const char **argv, const char *prefix);
extern int cmd_evlist(int argc, const char **argv, const char *prefix);
extern int cmd_help(int argc, const char **argv, const char *prefix);
diff --git a/tools/perf/command-list.txt b/tools/perf/command-list.txt
index 00fcaf8..acc3ea7 100644
--- a/tools/perf/command-list.txt
+++ b/tools/perf/command-list.txt
@@ -9,6 +9,7 @@ perf-buildid-cache mainporcelain common
perf-buildid-list mainporcelain common
perf-data mainporcelain common
perf-diff mainporcelain common
+perf-config mainporcelain common
perf-evlist mainporcelain common
perf-inject mainporcelain common
perf-kmem mainporcelain common
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 3d4c7c0..4bee53c 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -39,6 +39,7 @@ struct cmd_struct {
static struct cmd_struct commands[] = {
{ "buildid-cache", cmd_buildid_cache, 0 },
{ "buildid-list", cmd_buildid_list, 0 },
+ { "config", cmd_config, 0 },
{ "diff", cmd_diff, 0 },
{ "evlist", cmd_evlist, 0 },
{ "help", cmd_help, 0 },
--
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