[PATCH v11 0/1] Infrastructure code for perf-config

[PATCH v11 0/1] Infrastructure code for perf-config

[Taeung Song]

Hi,

We can use the config files (i.e user wide ~/.perfconfig
and system wide $(sysconfdir)/perfconfig)
to configure perf tools. perf-config help user
manage the config files, not manually look into or edit them.

Introduce new infrastructure code for config
management features of perf-config subcommand.

This pathset contains basic code for various purposes of configuration management
showing current configs, in the near future,
showing all configs with default value,
getting current configs from the config files
or writing configs that user type on the config files, etc.

IMHO, I think this infrastructure code is needed
to add new funcationalities for config management of perf-config.

If anyone reviews this, I'd appreciate it.

Thanks,
Taeung

v11:
- don't initialize perf_config_set with all default configs and remove the patch for it.
- add struct default_config_item for only default config (Namhyung)
- define each default_config_item array as const type (Namhyung)
- In the near future, default values of each actual config variable
  could be replaced with the default_config_item arrays (Namhyung)

v10:
- fix default values of colors.normal and colors.selected
  according ui_browser__colorsets[] at ui/browser.c
- recheck all default config values looking into relevant codes
- v9 1/2, 2/2 acked by Namhyung Kim (see https://lkml.org/lkml/2016/4/20/834)

v9:
- don't use the arbitrary maximum 'MAX_CONFIGS' (Arnaldo, Namhyung)
- change two-dimensinal arrays 'default_config_items' to array of pointers (Namhyung)
- remove needless 'enum perf_config_secion_idx'
- add sections 'intel-pt','convert' and their items
- modify perf_config_set__init() in accordance with new default config sections and items
- (applied two previous patches 860b8d4 and 20105ca from this patchset)

v8:
- rebased onto the current acme/perf/core

v7:
- rename 'is_custom' to 'is_allocated' to be proper (Masami)
- fix the code about free() or zfree() in perf_config_*__delete() (Masami)
- check set == NULL or not in show_config() (Masami)

v6:
- don't use goto in add_config_item() (Masami)

v5:
- departmentalize perf_config_set__delete() (Arnaldo)
- remove confusing find_config() (Arnaldo)
- use pr_debug() instead of pr_err() (Arnaldo)
- use zfree() instead of free() (Arnaldo)
- more compact in perf_config_set__new() (Arnaldo)
- rename variables 'perf_configs', 'config_items', etc. (Arnaldo)

v4:
- fill perf_config_set__delete() in collect_config() for state of error
- fill the code setting is_custom value in add_config_item() (Namhyung)

v3:
- use the section list that contains configs each section
  instead of the single config list (Namhyung)
- exclude a patch for '--list-all' option from this patchset

v2:
- remove perf_config_kind (user, system or both config files)
  and needless at this time, etc. (Namhyung)
- separate this patch as several patches (Namhyung)
- fix typing errors, etc.

Taeung Song (1):
  perf config: Prepare all default configs

 tools/perf/util/config.c | 150 ++++++++++++++++++++++++++++++++++++++++++++++-
 tools/perf/util/config.h |  46 ++++++++++++++-
 2 files changed, 194 insertions(+), 2 deletions(-)

-- 
2.5.0

[PATCH v11 1/1] perf config: Prepare all default configs

[Taeung Song]

To precisely manage configs,
prepare all default perf's configs that contain
default section name, variable name, value
and correct type, not string type.

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

Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
 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