[PATCH v3 7/7] perf config: Reset the config set at only 'config' sub-command

From: Taeung Song
Date: Mon May 30 2016 - 12:44:44 EST


When first calling perf_config(), config set is
initialized collecting both user and system config files
(i.e. user config ~/.perfconfig and system config
$(sysconfdir)/perfconfig) so config set contains
not only user config but also system config key-value pairs.
(User config has higher priority than system config.)

But 'config' sub-command have '--user' or '--system' options.
The options is to select a particular config file location
so the config set should be reset before 'config' sub-command work.

User config file:

# cat ~/.perfconfig
[annotate]
hide_src_code = false
[tui]
report = on

System config file:

# cat /usr/local/etc/perfconfig
[annotate]
hide_src_code = true

Before:

# perf config --user --list
annotate.hide_src_code=false
ui.report=on

# perf config --system --list
annotate.hide_src_code=false
tui.report=on

After:

# perf config --user --list
annotate.hide_src_code=false
tui.report=on

# perf config --system --list
annotate.hide_src_code=true

Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Signed-off-by: Taeung Song <treeze.taeung@xxxxxxxxx>
---
tools/perf/builtin-config.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/tools/perf/builtin-config.c b/tools/perf/builtin-config.c
index 412c725..5615631 100644
--- a/tools/perf/builtin-config.c
+++ b/tools/perf/builtin-config.c
@@ -64,6 +64,12 @@ int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused)
else if (use_user_config)
config_exclusive_filename = user_config;

+ /*
+ * Reset the config set at only 'config' sub-command
+ * because of options config file location.
+ */
+ perf_config_set__delete();
+
switch (actions) {
case ACTION_LIST:
if (argc) {
--
2.5.0