[PATCH v3 1/7] perf config: Introduce default_config_item for default config key-value pairs

From: Taeung Song
Date: Tue May 24 2016 - 02:52:08 EST


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

For example,
If there isn't user config value at ~/.perfconfig
for 'annotate.use_offset' config variable,
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,
};

By the way, I suggest using 'struct default_config_item' that
have default config key-value pairs and then initializing
default config values with them, in near future.
Because if we do, we can manage default perf config values
at one spot (like util/config.c) with default config arrays
and It can be easy and simple to modify default config values or add new configs.

Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Signed-off-by: Taeung Song <treeze.taeung@xxxxxxxxx>
---
tools/perf/util/config.h | 44 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 44 insertions(+)

diff --git a/tools/perf/util/config.h b/tools/perf/util/config.h
index 22ec626..5a11ca6 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;
@@ -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