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Subject[PATCH v2 3/4] perf tools: Add a option 'list-all' to perf-config.
Date
A option 'list-all' is to display both current config variables and
all possible config variables with default values.
The syntax examples are like below

perf config [options]

display all perf config with default values.
# perf config -a | --list-all

Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
tools/perf/Documentation/perf-config.txt | 6 ++++
tools/perf/builtin-config.c | 48 ++++++++++++++++++++++++++++++++
2 files changed, 54 insertions(+)

diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index f3dae23..e33e481 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -11,6 +11,8 @@ SYNOPSIS
'perf config' [section.name[=value] ...]
or
'perf config' -l | --list
+or
+'perf config' -a | --list-all

DESCRIPTION
-----------
@@ -23,6 +25,10 @@ OPTIONS
--list::
Show current config variables with key and value into each sections.

+-a::
+--list-all::
+ Show current and all possible config variables with default values.
+
CONFIGURATION FILE
------------------

diff --git a/tools/perf/builtin-config.c b/tools/perf/builtin-config.c
index 175b125..cf7d61d 100644
--- a/tools/perf/builtin-config.c
+++ b/tools/perf/builtin-config.c
@@ -21,10 +21,13 @@ static const char * const config_usage[] = {
};

#define ACTION_LIST (1<<0)
+#define ACTION_LIST_ALL (1<<1)

static const struct option config_options[] = {
OPT_GROUP("Action"),
OPT_BIT('l', "list", &actions, "show current config variables", ACTION_LIST),
+ OPT_BIT('a', "list-all", &actions,
+ "show current and all possible config variables with default values", ACTION_LIST_ALL),
OPT_END()
};

@@ -516,6 +519,45 @@ static int collect_current_config(const char *var, const char *value,
normalize_value(section_name, name, value));
}

+static int show_all_config(void)
+{
+ int i;
+ bool has_config;
+ struct config_section *section_node;
+ struct config_element *element_node;
+
+ for (i = 0; default_configsets[i].section_name != NULL; i++) {
+ find_config(&section_node, &element_node,
+ default_configsets[i].section_name, default_configsets[i].name);
+
+ if (!element_node)
+ printf("%s.%s=%s\n", default_configsets[i].section_name,
+ default_configsets[i].name, default_configsets[i].value);
+ else
+ printf("%s.%s=%s\n", section_node->name,
+ element_node->name, element_node->value);
+ }
+
+ /* Print config variables the default configsets haven't */
+ list_for_each_entry(section_node, &sections, list) {
+ list_for_each_entry(element_node, &section_node->element_head, list) {
+ has_config = false;
+ for (i = 0; default_configsets[i].section_name != NULL; i++) {
+ if (!strcmp(default_configsets[i].section_name, section_node->name)
+ && !strcmp(default_configsets[i].name, element_node->name)) {
+ has_config = true;
+ break;
+ }
+ }
+ if (!has_config)
+ printf("%s.%s=%s\n", section_node->name,
+ element_node->name, element_node->value);
+ }
+ }
+
+ return 0;
+}
+
static int perf_configset_with_option(configset_fn_t fn, const char *var, char *value)
{
char *section_name;
@@ -585,6 +627,12 @@ int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused)
else
goto out_err;
goto out;
+ case ACTION_LIST_ALL:
+ if (argc == 0)
+ ret = show_all_config();
+ else
+ goto out_err;
+ goto out;
default:
if (!has_option && argc == 0) {
ret = perf_config(show_config, NULL);
--
1.9.1


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