[PATCH v9 0/7] perf config: Introduce default config key-value pairs arrays

[PATCH v9 0/7] perf config: Introduce default config key-value pairs arrays

[Taeung Song]

Hello, :)

When initializing default perf config values,
we currently use values of actual type(int, bool, char *, etc.).
But I suggest using default config key-value pairs arrays.

For example,
If there isn't a user config value for 'annotate.use_offset'
config variable at ~/.perfconfig,
default value for it is 'true' bool type value in perf like below.

At ui/browsers/annoate.c

static struct annotate_browser_opt {
       bool hide_src_code,
            use_offset,
	    jump_arrows,
	    show_linenr,
	    show_nr_jumps,
	    show_total_period;
} annotate_browser__opts = {
       .use_offset      = true,
       .jump_arrows     = true,
};

But if we use new config arrays that have all default config key-value pairs,
we could initialize default config values with them.

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 existing default config values or
add default values for new config item.

For example,
If we use new default config arrays and there isn't user config value for 'annoate.use_offset'
default value for it will be set as annotate_config_items[CONFIG_ANNOATE_USE_OFFSET].value.b
instead of actual boolean type value 'true'.

IMHO, I think it would needed to use new default config arrays
to manage default perf config values more effectively.
And this pathset contains patchs for only 'colors' and 'annoate' section
because waiting for other opinions.

If you review this patchset, I'd appreciate it :-)

Thanks,
Taeung

v9:
- rebased on current acme/perf/core

v8:
- rebased on current acme/perf/core

v7:
- fix wrong handling a exception from strdup (Arnaldo)
- rebased on current acme/perf/core

v6:
- rename 'fore_back_colors' to simple 'colors' of ui_browser_colorset (Namhyung)
- remove unnecssary whitespace changes of PATCH 4/7, 5/7 (Namhyung)
- make more general macro instead of making accessor macro for each config section (Namhyung)
- rebased on current acme/perf/core

v5:
- rebased on current acme/perf/core

v4:
- rename 'fb_ground' to 'fore_back_colors' (Namhyung)
- add struct default_config_section
- split first patch[PATCH 1/7] as two
- remove perf_default_config_init() at perf.c
- rebased on current acme/perf/core

v3:
- remove default config arrays for the rest sections except 'colors' and 'annotate'
- use combined {fore, back}ground colors instead of each two color
- introduce perf_default_config_init() that call all default_*_config_init()
  for each config section

v2:
- rename 'ui_browser__config_gcolors' to 'ui_browser__config_colors' (Arnaldo)
- change 'ground colors' to '{back, fore}ground colors' (Arnaldo)
- use strtok + ltrim instead of strchr and while (isspace(*++bg)); (Arnaldo)

Taeung Song (7):
  perf config: Introduce default_config_section and default_config_item
    for default config key-value pairs
  perf config: Add macros assigning key-value pairs to
    default_config_item
  perf config: Add default section and item arrays for 'colors' config
  perf config: Use combined {fore,back}ground colors value instead of
    each two color
  perf config: Initialize ui_browser__colorsets with default config
    items
  perf config: Add default section and item arrays for 'annotate' config
  perf config: Initialize annotate_browser__opts with default config
    items

 tools/perf/ui/browser.c           | 64 +++++++++++++++++--------------
 tools/perf/ui/browsers/annotate.c | 16 ++++++--
 tools/perf/util/config.c          | 26 +++++++++++++
 tools/perf/util/config.h          | 80 +++++++++++++++++++++++++++++++++++++++
 4 files changed, 154 insertions(+), 32 deletions(-)

-- 
2.7.4

[PATCH v9 1/7] perf config: Introduce default_config_section and default_config_item for default config key-value pairs

[Taeung Song]

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

For example,
If there isn't a user config value for 'annotate.use_offset'
config variable at ~/.perfconfig,
default value for it is 'true' bool type value in perf like below.

At ui/browsers/annoate.c

static struct annotate_browser_opt {
        bool hide_src_code,
             use_offset,
             jump_arrows,
             show_linenr,
             show_nr_jumps,
             show_total_period;
} annotate_browser__opts = {
        .use_offset      = true,
        .jump_arrows     = true,
};

But I suggest using 'struct default_config_section' and
'struct default_config_item' that can contain default config key-value pairs
in order to initialize default config values with them, in near future.

If we do, we could manage default perf config values at one spot (i.e. util/config.c)
with default config arrays and it could be easy and simple to modify
existing default config values or add default values for new config item.

Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
 tools/perf/util/config.h | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/tools/perf/util/config.h b/tools/perf/util/config.h
index 1a59a6b..434d71c 100644
--- a/tools/perf/util/config.h
+++ b/tools/perf/util/config.h
@@ -67,4 +67,33 @@ void perf_config__refresh(void);
 	perf_config_sections__for_each_entry(&set->sections, section)		\
 	perf_config_items__for_each_entry(&section->items, item)
 
+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 default_config_section {
+	const char *name;
+	const struct default_config_item *items;
+};
+
 #endif /* __PERF_CONFIG_H */
-- 
2.7.4

[PATCH v9 2/7] perf config: Add macros assigning key-value pairs to default_config_item

[Taeung Song]

In near future, default_config_item arrays will be added
(e.g. const struct default_config_item colors_config_items[])
To simply assign config key-value pairs to default_config_item,
add macros that are CONF_VAR() and CONF_*_VAR() for each type.

Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
 tools/perf/util/config.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/tools/perf/util/config.h b/tools/perf/util/config.h
index 434d71c..7498669 100644
--- a/tools/perf/util/config.h
+++ b/tools/perf/util/config.h
@@ -96,4 +96,24 @@ struct default_config_section {
 	const struct default_config_item *items;
 };
 
+#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 }
+
 #endif /* __PERF_CONFIG_H */
-- 
2.7.4

[PATCH v9 3/7] perf config: Add default section and item arrays for 'colors' config

[Taeung Song]

Actual values for default configs of 'colors' section is like below.

(at ui/browser.c)
static struct ui_browser_colorset {
	const char *name, *fg, *bg;
	int colorset;
} ui_browser__colorsets[] = {
	{
		.colorset = HE_COLORSET_TOP,
		.name	  = "top",
		.fg	  = "red",
		.bg	  = "default",
	},
...

But I suggest using default config arrays for 'colors' section that
contain all default config key-value pairs for it.

In near future, this array will be used on ui/browser.c
because of setting default values of actual variables for 'colors' config.

Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
 tools/perf/util/config.c | 15 +++++++++++++++
 tools/perf/util/config.h | 17 +++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 3d906db..b56aa0e 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -30,6 +30,21 @@ static struct perf_config_set *config_set;
 
 const char *config_exclusive_filename;
 
+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_section default_sections[] = {
+	{ .name = "colors", .items = colors_config_items },
+};
+
 static int get_next_char(void)
 {
 	int c;
diff --git a/tools/perf/util/config.h b/tools/perf/util/config.h
index 7498669..fba7304 100644
--- a/tools/perf/util/config.h
+++ b/tools/perf/util/config.h
@@ -77,6 +77,20 @@ enum perf_config_type {
 	CONFIG_TYPE_STRING
 };
 
+enum config_section_idx {
+	CONFIG_COLORS,
+};
+
+enum colors_config_items_idx {
+	CONFIG_COLORS_TOP,
+	CONFIG_COLORS_MEDIUM,
+	CONFIG_COLORS_NORMAL,
+	CONFIG_COLORS_SELECTED,
+	CONFIG_COLORS_JUMP_ARROWS,
+	CONFIG_COLORS_ADDR,
+	CONFIG_COLORS_ROOT,
+};
+
 struct default_config_item {
 	const char *name;
 	union {
@@ -116,4 +130,7 @@ struct default_config_section {
 #define CONF_END()					\
 	{ .name = NULL }
 
+extern const struct default_config_section default_sections[];
+extern const struct default_config_item colors_config_items[];
+
 #endif /* __PERF_CONFIG_H */
-- 
2.7.4

[PATCH v9 4/7] perf config: Use combined {fore,back}ground colors value instead of each two color

[Taeung Song]

To easily set default config values into actual variables for 'colors' config,
it would be better that actual variables for each 'colors' config
have only one value like 'default_config_item' type.

If we use combined {fore,back}ground colors values in ui_browser_colorset,
it smoothly work to initialize default config values for 'colors' config
by 'colors_config_items' array that contains default values for it at util/config.c.
because both actual variable and config item of 'colors_config_items'
are equal in the number of values (as just one).

Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
 tools/perf/ui/browser.c | 53 +++++++++++++++++++++++--------------------------
 1 file changed, 25 insertions(+), 28 deletions(-)

diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index 3eb3edb..1c80f00 100644
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -503,61 +503,53 @@ unsigned int ui_browser__list_head_refresh(struct ui_browser *browser)
 }
 
 static struct ui_browser_colorset {
-	const char *name, *fg, *bg;
+	const char *name, *colors;
 	int colorset;
 } ui_browser__colorsets[] = {
 	{
 		.colorset = HE_COLORSET_TOP,
 		.name	  = "top",
-		.fg	  = "red",
-		.bg	  = "default",
+		.colors	  = "red, default",
 	},
 	{
 		.colorset = HE_COLORSET_MEDIUM,
 		.name	  = "medium",
-		.fg	  = "green",
-		.bg	  = "default",
+		.colors	  = "green, default",
 	},
 	{
 		.colorset = HE_COLORSET_NORMAL,
 		.name	  = "normal",
-		.fg	  = "default",
-		.bg	  = "default",
+		.colors	  = "default, default",
 	},
 	{
 		.colorset = HE_COLORSET_SELECTED,
 		.name	  = "selected",
-		.fg	  = "black",
-		.bg	  = "yellow",
+		.colors	  = "black, yellow",
 	},
 	{
 		.colorset = HE_COLORSET_JUMP_ARROWS,
 		.name	  = "jump_arrows",
-		.fg	  = "blue",
-		.bg	  = "default",
+		.colors	  = "blue, default",
 	},
 	{
 		.colorset = HE_COLORSET_ADDR,
 		.name	  = "addr",
-		.fg	  = "magenta",
-		.bg	  = "default",
+		.colors	  = "magenta, default",
 	},
 	{
 		.colorset = HE_COLORSET_ROOT,
 		.name	  = "root",
-		.fg	  = "white",
-		.bg	  = "blue",
+		.colors	  = "white, blue",
 	},
 	{
 		.name = NULL,
 	}
 };
 
-
 static int ui_browser__color_config(const char *var, const char *value,
 				    void *data __maybe_unused)
 {
-	char *fg = NULL, *bg;
+	char *colors;
 	int i;
 
 	/* same dir for all commands */
@@ -570,22 +562,18 @@ static int ui_browser__color_config(const char *var, const char *value,
 		if (strcmp(ui_browser__colorsets[i].name, name) != 0)
 			continue;
 
-		fg = strdup(value);
-		if (fg == NULL)
-			break;
+		if (strstr(value, ",") == NULL)
+			return -1;
 
-		bg = strchr(fg, ',');
-		if (bg == NULL)
+		colors = strdup(value);
+		if (colors == NULL)
 			break;
+		ui_browser__colorsets[i].colors = colors;
 
-		*bg = '\0';
-		while (isspace(*++bg));
-		ui_browser__colorsets[i].bg = bg;
-		ui_browser__colorsets[i].fg = fg;
 		return 0;
 	}
 
-	free(fg);
+	free(colors);
 	return -1;
 }
 
@@ -743,8 +731,17 @@ void ui_browser__init(void)
 	perf_config(ui_browser__color_config, NULL);
 
 	while (ui_browser__colorsets[i].name) {
+		char *colors, *fg, *bg;
 		struct ui_browser_colorset *c = &ui_browser__colorsets[i++];
-		sltt_set_color(c->colorset, c->name, c->fg, c->bg);
+
+		colors = strdup(c->colors);
+		if (colors == NULL)
+			break;
+		fg = strtok(colors, ",");
+		bg = strtok(NULL, ",");
+		bg = ltrim(bg);
+		sltt_set_color(c->colorset, c->name, fg, bg);
+		free(colors);
 	}
 
 	annotate_browser__init();
-- 
2.7.4

[PATCH v9 5/7] perf config: Initialize ui_browser__colorsets with default config items

[Taeung Song]

Set default config values for 'colors' section with 'colors_config_items[]'
instead of actual const char * type values.
(e.g. using colors_config_item[CONFIG_COLORS_TOP].value.s
instead of "red, default" string value for 'colors.top')

Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
 tools/perf/ui/browser.c | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index 1c80f00..5caa7e4 100644
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -509,37 +509,30 @@ static struct ui_browser_colorset {
 	{
 		.colorset = HE_COLORSET_TOP,
 		.name	  = "top",
-		.colors	  = "red, default",
 	},
 	{
 		.colorset = HE_COLORSET_MEDIUM,
 		.name	  = "medium",
-		.colors	  = "green, default",
 	},
 	{
 		.colorset = HE_COLORSET_NORMAL,
 		.name	  = "normal",
-		.colors	  = "default, default",
 	},
 	{
 		.colorset = HE_COLORSET_SELECTED,
 		.name	  = "selected",
-		.colors	  = "black, yellow",
 	},
 	{
 		.colorset = HE_COLORSET_JUMP_ARROWS,
 		.name	  = "jump_arrows",
-		.colors	  = "blue, default",
 	},
 	{
 		.colorset = HE_COLORSET_ADDR,
 		.name	  = "addr",
-		.colors	  = "magenta, default",
 	},
 	{
 		.colorset = HE_COLORSET_ROOT,
 		.name	  = "root",
-		.colors	  = "white, blue",
 	},
 	{
 		.name = NULL,
@@ -724,10 +717,28 @@ void __ui_browser__line_arrow(struct ui_browser *browser, unsigned int column,
 		__ui_browser__line_arrow_down(browser, column, start, end);
 }
 
+static void default_colors_config_init(void)
+{
+	int i, j;
+
+	for (i = 0; ui_browser__colorsets[i].name != NULL; ++i) {
+		const char *name = ui_browser__colorsets[i].name;
+
+		for (j = 0; colors_config_items[j].name != NULL; j++) {
+			if (!strcmp(name, colors_config_items[j].name)) {
+				ui_browser__colorsets[i].colors =
+					colors_config_items[j].value.s;
+				break;
+			}
+		}
+	}
+}
+
 void ui_browser__init(void)
 {
 	int i = 0;
 
+	default_colors_config_init();
 	perf_config(ui_browser__color_config, NULL);
 
 	while (ui_browser__colorsets[i].name) {
-- 
2.7.4

[PATCH v9 6/7] perf config: Add default section and item arrays for 'annotate' config

[Taeung Song]

Actual values for default configs of 'annotate' section is like below.

(at ui/browsers/annoate.c)
static struct annotate_browser_opt {
        bool hide_src_code,
             use_offset,
             jump_arrows,
             show_linenr,
             show_nr_jumps,
             show_total_period;
} annotate_browser__opts = {
        .use_offset      = true,
        .jump_arrows     = true,
};

But I suggest using default config arrays for 'annotate' section that
contain all default config key-value pairs for it.

In near future, this arrays will be used on ui/browsers/annoate.c
because of setting default values of actual variables for 'annotate' config.

Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
 tools/perf/util/config.c | 11 +++++++++++
 tools/perf/util/config.h | 11 +++++++++++
 2 files changed, 22 insertions(+)

diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index b56aa0e..5b16a226 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -41,8 +41,19 @@ const struct default_config_item colors_config_items[] = {
 	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_section default_sections[] = {
 	{ .name = "colors", .items = colors_config_items },
+	{ .name = "annotate", .items = annotate_config_items },
 };
 
 static int get_next_char(void)
diff --git a/tools/perf/util/config.h b/tools/perf/util/config.h
index fba7304..8adf164 100644
--- a/tools/perf/util/config.h
+++ b/tools/perf/util/config.h
@@ -79,6 +79,7 @@ enum perf_config_type {
 
 enum config_section_idx {
 	CONFIG_COLORS,
+	CONFIG_ANNOTATE,
 };
 
 enum colors_config_items_idx {
@@ -91,6 +92,15 @@ enum colors_config_items_idx {
 	CONFIG_COLORS_ROOT,
 };
 
+enum annotate_config_items_idx {
+	CONFIG_ANNOTATE_HIDE_SRC_CODE,
+	CONFIG_ANNOTATE_USE_OFFSET,
+	CONFIG_ANNOTATE_JUMP_ARROWS,
+	CONFIG_ANNOTATE_SHOW_NR_JUMPS,
+	CONFIG_ANNOTATE_SHOW_LINENR,
+	CONFIG_ANNOTATE_SHOW_TOTAL_PERIOD,
+};
+
 struct default_config_item {
 	const char *name;
 	union {
@@ -132,5 +142,6 @@ struct default_config_section {
 
 extern const struct default_config_section default_sections[];
 extern const struct default_config_item colors_config_items[];
+extern const struct default_config_item annotate_config_items[];
 
 #endif /* __PERF_CONFIG_H */
-- 
2.7.4

[PATCH v9 7/7] perf config: Initialize annotate_browser__opts with default config items

[Taeung Song]

Set default config values for 'annotate' section with 'annotate_config_items[]'
instead of actual bool type values.
(e.g. using annotate_config_items[CONFIG_ANNOTATE_USE_OFFSET].value.b
instead of 'true' bool type value for 'annotate.use_offset'.)

Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
 tools/perf/ui/browsers/annotate.c | 16 ++++++++++++----
 tools/perf/util/config.h          |  3 +++
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index ec7a30f..183f9c7 100644
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -38,10 +38,7 @@ static struct annotate_browser_opt {
 	     show_linenr,
 	     show_nr_jumps,
 	     show_total_period;
-} annotate_browser__opts = {
-	.use_offset	= true,
-	.jump_arrows	= true,
-};
+} annotate_browser__opts;
 
 struct annotate_browser {
 	struct ui_browser b;
@@ -1162,7 +1159,18 @@ static int annotate__config(const char *var, const char *value,
 	return 0;
 }
 
+static void default_annotate_config_init(void)
+{
+	annotate_browser__opts.hide_src_code = CONF_DEFAULT_BOOL(ANNOTATE, HIDE_SRC_CODE);
+	annotate_browser__opts.use_offset = CONF_DEFAULT_BOOL(ANNOTATE, USE_OFFSET);
+	annotate_browser__opts.jump_arrows = CONF_DEFAULT_BOOL(ANNOTATE, JUMP_ARROWS);
+	annotate_browser__opts.show_linenr = CONF_DEFAULT_BOOL(ANNOTATE, SHOW_LINENR);
+	annotate_browser__opts.show_nr_jumps = CONF_DEFAULT_BOOL(ANNOTATE, SHOW_NR_JUMPS);
+	annotate_browser__opts.show_total_period = CONF_DEFAULT_BOOL(ANNOTATE, SHOW_TOTAL_PERIOD);
+}
+
 void annotate_browser__init(void)
 {
+	default_annotate_config_init();
 	perf_config(annotate__config, NULL);
 }
diff --git a/tools/perf/util/config.h b/tools/perf/util/config.h
index 8adf164..930880e 100644
--- a/tools/perf/util/config.h
+++ b/tools/perf/util/config.h
@@ -140,6 +140,9 @@ struct default_config_section {
 #define CONF_END()					\
 	{ .name = NULL }
 
+#define CONF_DEFAULT_BOOL(sec, name)					\
+	default_sections[CONFIG_##sec].items[CONFIG_##sec##_##name].value.b
+
 extern const struct default_config_section default_sections[];
 extern const struct default_config_item colors_config_items[];
 extern const struct default_config_item annotate_config_items[];
-- 
2.7.4

Re: [PATCH v9 1/7] perf config: Introduce default_config_section and default_config_item for default config key-value pairs

[Arnaldo Carvalho de Melo]

Em Mon, Nov 28, 2016 at 05:51:12PM +0900, Taeung Song escreveu:
> When initializing default perf config values,
> we currently use values of actual type(int, bool, char *, etc.).
> 
> For example,
> If there isn't a user config value for 'annotate.use_offset'
> config variable at ~/.perfconfig,
> default value for it is 'true' bool type value in perf like below.
> 
> At ui/browsers/annoate.c
> 
> static struct annotate_browser_opt {
>         bool hide_src_code,
>              use_offset,
>              jump_arrows,
>              show_linenr,
>              show_nr_jumps,
>              show_total_period;
> } annotate_browser__opts = {
>         .use_offset      = true,
>         .jump_arrows     = true,
> };

And isn't this a good thing? I.e. its compact, we have just to set
values to things that are !0 (or !false), and it is close to the code
where it is used.
 
> But I suggest using 'struct default_config_section' and
> 'struct default_config_item' that can contain default config key-value pairs
> in order to initialize default config values with them, in near future.

 
> If we do, we could manage default perf config values at one spot (i.e. util/config.c)
> with default config arrays and it could be easy and simple to modify
> existing default config values or add default values for new config item.
> 
> Cc: Namhyung Kim <namhyung@kernel.org>
> Cc: Jiri Olsa <jolsa@redhat.com>
> Cc: Wang Nan <wangnan0@huawei.com>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Masami Hiramatsu <mhiramat@kernel.org>
> Cc: David Ahern <dsahern@gmail.com>
> Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
> ---
>  tools/perf/util/config.h | 29 +++++++++++++++++++++++++++++
>  1 file changed, 29 insertions(+)
> 
> diff --git a/tools/perf/util/config.h b/tools/perf/util/config.h
> index 1a59a6b..434d71c 100644
> --- a/tools/perf/util/config.h
> +++ b/tools/perf/util/config.h
> @@ -67,4 +67,33 @@ void perf_config__refresh(void);
>  	perf_config_sections__for_each_entry(&set->sections, section)		\
>  	perf_config_items__for_each_entry(&section->items, item)
>  
> +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 default_config_section {
> +	const char *name;
> +	const struct default_config_item *items;
> +};
> +
>  #endif /* __PERF_CONFIG_H */
> -- 
> 2.7.4

Re: [PATCH v9 1/7] perf config: Introduce default_config_section and default_config_item for default config key-value pairs

[Taeung Song]

Hi, Arnaldo :)

On 11/30/2016 01:05 AM, Arnaldo Carvalho de Melo wrote:
> Em Mon, Nov 28, 2016 at 05:51:12PM +0900, Taeung Song escreveu:
>> When initializing default perf config values,
>> we currently use values of actual type(int, bool, char *, etc.).
>>
>> For example,
>> If there isn't a user config value for 'annotate.use_offset'
>> config variable at ~/.perfconfig,
>> default value for it is 'true' bool type value in perf like below.
>>
>> At ui/browsers/annoate.c
>>
>> static struct annotate_browser_opt {
>>         bool hide_src_code,
>>              use_offset,
>>              jump_arrows,
>>              show_linenr,
>>              show_nr_jumps,
>>              show_total_period;
>> } annotate_browser__opts = {
>>         .use_offset      = true,
>>         .jump_arrows     = true,
>> };
>
> And isn't this a good thing? I.e. its compact, we have just to set
> values to things that are !0 (or !false), and it is close to the code
> where it is used.

I understood it. But I think we also need to manage all default config
values in only util/config.c.

The reason is that if we individually have default config arrays,
some difference can be made between actual config values and
values of default config arrays. (e.g. if we change default config
values or add new default config items and values)

So IMHO, I suggest that we use default config arrays instead of
actual type values even though its compact.

And if we have default config arrays, we can also show default values as 
below.

     [acme@jouet linux]$ perf config report.queue-size report.children
     report.children=false
     # report.queue-size=18446744073709551615 # Default, not set in 
~/.perfconfig
     [acme@jouet linux]$


Just individually make default config arrays in util/config.c ?

Thanks,
Taeung

>> But I suggest using 'struct default_config_section' and
>> 'struct default_config_item' that can contain default config key-value pairs
>> in order to initialize default config values with them, in near future.
>
>
>> If we do, we could manage default perf config values at one spot (i.e. util/config.c)
>> with default config arrays and it could be easy and simple to modify
>> existing default config values or add default values for new config item.
>>
>> Cc: Namhyung Kim <namhyung@kernel.org>
>> Cc: Jiri Olsa <jolsa@redhat.com>
>> Cc: Wang Nan <wangnan0@huawei.com>
>> Cc: Peter Zijlstra <peterz@infradead.org>
>> Cc: Ingo Molnar <mingo@redhat.com>
>> Cc: Masami Hiramatsu <mhiramat@kernel.org>
>> Cc: David Ahern <dsahern@gmail.com>
>> Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
>> ---
>>  tools/perf/util/config.h | 29 +++++++++++++++++++++++++++++
>>  1 file changed, 29 insertions(+)
>>
>> diff --git a/tools/perf/util/config.h b/tools/perf/util/config.h
>> index 1a59a6b..434d71c 100644
>> --- a/tools/perf/util/config.h
>> +++ b/tools/perf/util/config.h
>> @@ -67,4 +67,33 @@ void perf_config__refresh(void);
>>  	perf_config_sections__for_each_entry(&set->sections, section)		\
>>  	perf_config_items__for_each_entry(&section->items, item)
>>
>> +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 default_config_section {
>> +	const char *name;
>> +	const struct default_config_item *items;
>> +};
>> +
>>  #endif /* __PERF_CONFIG_H */
>> --
>> 2.7.4