[PATCH v2 1/4] perf config: Introduce default_config_item for all default config key-value pairs

[Taeung Song]

We currently use values of actual type(int, bool, char *, etc.)
when initializing default perf config values.

But I suggest using new config arrays(default_config_items)
that have all default perf config key-value pairs.

Because if we do, we can manage default perf config values at one spot (like util/config.c)
and it can be easy and simple to modify default config values or add new configs.

In the near future, this could be used when
showing all configs with default values,
initializing default values of each actual config variable
with the default_config_item arrays and etc.

Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Signed-off-by: Taeung Song <treeze.taeung@xxxxxxxxx>
---
 tools/perf/util/config.c | 150 ++++++++++++++++++++++++++++++++++++++++++++++-
 tools/perf/util/config.h |  46 ++++++++++++++-
 2 files changed, 194 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index dad7d82..3a72ed7 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -29,6 +29,154 @@ static int config_file_eof;
 
 const char *config_exclusive_filename;
 
+const struct perf_config_section default_sections[] = {
+	{ .name = "colors" },
+	{ .name = "tui" },
+	{ .name = "buildid" },
+	{ .name = "annotate" },
+	{ .name = "gtk" },
+	{ .name = "pager" },
+	{ .name = "help" },
+	{ .name = "hist" },
+	{ .name = "ui" },
+	{ .name = "call-graph" },
+	{ .name = "report" },
+	{ .name = "top" },
+	{ .name = "man" },
+	{ .name = "kmem" },
+	{ .name = "intel-pt" },
+	{ .name = "convert" },
+};
+
+const struct default_config_item colors_config_items[] = {
+	CONF_STR_VAR("top", "red, default"),
+	CONF_STR_VAR("medium", "green, default"),
+	CONF_STR_VAR("normal", "default, default"),
+	CONF_STR_VAR("selected", "black, yellow"),
+	CONF_STR_VAR("jump_arrows", "blue, default"),
+	CONF_STR_VAR("addr", "magenta, default"),
+	CONF_STR_VAR("root", "white, blue"),
+	CONF_END()
+};
+
+const struct default_config_item tui_config_items[] = {
+	CONF_BOOL_VAR("report", true),
+	CONF_BOOL_VAR("annotate", true),
+	CONF_BOOL_VAR("top", true),
+	CONF_END()
+};
+
+const struct default_config_item buildid_config_items[] = {
+	CONF_STR_VAR("dir", "~/.debug"),
+	CONF_END()
+};
+
+const struct default_config_item annotate_config_items[] = {
+	CONF_BOOL_VAR("hide_src_code", false),
+	CONF_BOOL_VAR("use_offset", true),
+	CONF_BOOL_VAR("jump_arrows", true),
+	CONF_BOOL_VAR("show_nr_jumps", false),
+	CONF_BOOL_VAR("show_linenr", false),
+	CONF_BOOL_VAR("show_total_period", false),
+	CONF_END()
+};
+
+const struct default_config_item gtk_config_items[] = {
+	CONF_BOOL_VAR("annotate", false),
+	CONF_BOOL_VAR("report", false),
+	CONF_BOOL_VAR("top", false),
+	CONF_END()
+};
+
+const struct default_config_item pager_config_items[] = {
+	CONF_BOOL_VAR("cmd", true),
+	CONF_BOOL_VAR("report", true),
+	CONF_BOOL_VAR("annotate", true),
+	CONF_BOOL_VAR("top", true),
+	CONF_BOOL_VAR("diff", true),
+	CONF_END()
+};
+
+const struct default_config_item help_config_items[] = {
+	CONF_STR_VAR("format", "man"),
+	CONF_INT_VAR("autocorrect", 0),
+	CONF_END()
+};
+
+const struct default_config_item hist_config_items[] = {
+	CONF_STR_VAR("percentage", "absolute"),
+	CONF_END()
+};
+
+const struct default_config_item ui_config_items[] = {
+	CONF_BOOL_VAR("show-headers", true),
+	CONF_END()
+};
+
+const struct default_config_item call_graph_config_items[] = {
+	CONF_STR_VAR("record-mode", "fp"),
+	CONF_LONG_VAR("dump-size", 8192),
+	CONF_STR_VAR("print-type", "graph"),
+	CONF_STR_VAR("order", "callee"),
+	CONF_STR_VAR("sort-key", "function"),
+	CONF_DOUBLE_VAR("threshold", 0.5),
+	CONF_LONG_VAR("print-limit", 0),
+	CONF_END()
+};
+
+const struct default_config_item report_config_items[] = {
+	CONF_BOOL_VAR("group", true),
+	CONF_BOOL_VAR("children", true),
+	CONF_FLOAT_VAR("percent-limit", 0),
+	CONF_U64_VAR("queue-size", 0),
+	CONF_END()
+};
+
+const struct default_config_item top_config_items[] = {
+	CONF_BOOL_VAR("children", true),
+	CONF_END()
+};
+
+const struct default_config_item man_config_items[] = {
+	CONF_STR_VAR("viewer", "man"),
+	CONF_END()
+};
+
+const struct default_config_item kmem_config_items[] = {
+	CONF_STR_VAR("default", "slab"),
+	CONF_END()
+};
+
+const struct default_config_item intel_pt_config_items[] = {
+	CONF_INT_VAR("cache-divisor", 64),
+	CONF_BOOL_VAR("mispred-all", false),
+	CONF_END()
+};
+
+const struct default_config_item convert_config_items[] = {
+	CONF_U64_VAR("queue-size", 0),
+	CONF_END()
+};
+
+const struct default_config_item *default_config_items[] = {
+	colors_config_items,
+	tui_config_items,
+	buildid_config_items,
+	annotate_config_items,
+	gtk_config_items,
+	pager_config_items,
+	help_config_items,
+	hist_config_items,
+	ui_config_items,
+	call_graph_config_items,
+	report_config_items,
+	top_config_items,
+	man_config_items,
+	kmem_config_items,
+	intel_pt_config_items,
+	convert_config_items,
+};
+
 static int get_next_char(void)
 {
 	int c;
@@ -677,7 +825,7 @@ static void perf_config_section__purge(struct perf_config_section *section)
 static void perf_config_section__delete(struct perf_config_section *section)
 {
 	perf_config_section__purge(section);
-	zfree(&section->name);
+	zfree((char **)&section->name);
 	free(section);
 }
 
diff --git a/tools/perf/util/config.h b/tools/perf/util/config.h
index 22ec626..84414af 100644
--- a/tools/perf/util/config.h
+++ b/tools/perf/util/config.h
@@ -4,6 +4,30 @@
 #include <stdbool.h>
 #include <linux/list.h>
 
+enum perf_config_type {
+	CONFIG_TYPE_BOOL,
+	CONFIG_TYPE_INT,
+	CONFIG_TYPE_LONG,
+	CONFIG_TYPE_U64,
+	CONFIG_TYPE_FLOAT,
+	CONFIG_TYPE_DOUBLE,
+	CONFIG_TYPE_STRING
+};
+
+struct default_config_item {
+	const char *name;
+	union {
+		bool b;
+		int i;
+		u32 l;
+		u64 ll;
+		float f;
+		double d;
+		const char *s;
+	} value;
+	enum perf_config_type type;
+};
+
 struct perf_config_item {
 	char *name;
 	char *value;
@@ -11,7 +35,7 @@ struct perf_config_item {
 };
 
 struct perf_config_section {
-	char *name;
+	const char *name;
 	struct list_head items;
 	struct list_head node;
 };
@@ -20,6 +44,26 @@ struct perf_config_set {
 	struct list_head sections;
 };
 
+#define CONF_VAR(_name, _field, _val, _type)			\
+	{ .name = _name, .value._field = _val, .type = _type }
+
+#define CONF_BOOL_VAR(_name, _val)			\
+	CONF_VAR(_name, b, _val, CONFIG_TYPE_BOOL)
+#define CONF_INT_VAR(_name, _val)			\
+	CONF_VAR(_name, i, _val, CONFIG_TYPE_INT)
+#define CONF_LONG_VAR(_name, _val)			\
+	CONF_VAR(_name, l, _val, CONFIG_TYPE_LONG)
+#define CONF_U64_VAR(_name, _val)			\
+	CONF_VAR(_name, ll, _val, CONFIG_TYPE_U64)
+#define CONF_FLOAT_VAR(_name, _val)			\
+	CONF_VAR(_name, f, _val, CONFIG_TYPE_FLOAT)
+#define CONF_DOUBLE_VAR(_name, _val)			\
+	CONF_VAR(_name, d, _val, CONFIG_TYPE_DOUBLE)
+#define CONF_STR_VAR(_name, _val)			\
+	CONF_VAR(_name, s, _val, CONFIG_TYPE_STRING)
+#define CONF_END()					\
+	{ .name = NULL }
+
 struct perf_config_set *perf_config_set__new(void);
 void perf_config_set__delete(struct perf_config_set *set);
 
-- 
2.5.0