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Subject[PATCH v5 1/7] perf config: Introduce default_config_section and default_config_item for default config key-value pairs
Date
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,
};

But I suggest using 'struct default_config_section' and
'struct default_config_item' that have 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
default config values or add new configs.

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: Alexander Shishkin <alexander.shishkin@linux.intel.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 6f813d4..1fd8e4c 100644
--- a/tools/perf/util/config.h
+++ b/tools/perf/util/config.h
@@ -63,4 +63,33 @@ 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 */
--
2.5.0
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