Thank you !! :)

  - Taeung

On 09/08/2017 11:36 PM, Arnaldo Carvalho de Melo wrote:
Em Thu, Sep 07, 2017 at 12:18:56PM +0900, Taeung Song escreveu:
When there isn't a config file (e.g. ~/.perfconfig)
or it has nothing, the config set wasn't created.
If the config set not exists, a config file can't be autogenerated.

So allow creating a empty config set in the above case,
then we can support the config file autogeneration.

Applied, and rephased a bit the cset log message.

- Arnaldo
Before:

   $ rm -f ~/.perfconfig
   $ perf config --user report.children=false

   $ cat ~/.perfconfig
   cat: /root/.perfconfig: No such file or directory

But I think it should work even if there isn't a config file.

After:

   $ rm -f ~/.perfconfig
   $ perf config --user report.children=false

   $ cat ~/.perfconfig
   # this file is auto-generated.
   [report]
       children = false

NOTE:
As a result, if perf_config_set__init() is failed,
it seems that the config set isn't freed. But it isn't a problem.
Because the config set  will be freed by perf_config_set__delete()
at the end of cmd_config().

Cc: Jiri Olsa <jo...@kernel.org>
Cc: Namhyung Kim <namhy...@kernel.org>
Signed-off-by: Taeung Song <treeze.tae...@gmail.com>
---
  tools/perf/util/config.c | 5 +----
  1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index bc75596..d2b6983 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -700,10 +700,7 @@ struct perf_config_set *perf_config_set__new(void)
if (set) {
                INIT_LIST_HEAD(&set->sections);
-               if (perf_config_set__init(set) < 0) {
-                       perf_config_set__delete(set);
-                       set = NULL;
-               }
+               perf_config_set__init(set);
        }
return set;
--
2.7.4

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