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55421b4fb7
When there isn't a config file (e.g. ~/.perfconfig) or it has nothing,
the config set wasn't created.
If the config set does not exist, 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.
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() fails, it looks as if 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().
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1504754336-9824-1-git-send-email-treeze.taeung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.