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Subject[PATCH v4 0/5] perf tools: Add 'perf-config' command
Changes in v4:
- If some config value is default value, notice it is '(default)'as below.

# perf config colors.normal
colors.normal=lightgray, default (default)

- A config file path is only decided in perf_config().
And a perf-config command depend on perf_config() deciding a config file path.
So if the config file path is NULL because of some reason like no such file,
a perf-config command can't write to the file. So, I added new options
which are '--global' and '--system' to be enable to select
config file path to be used without perf_config().

Changes in v3:
- Add a config variable 'kmem.default' with a default value
into 'struct default_configset' which has default config variables and values.

- Add a option '--global' and '--local' to enable config file location to be selected

Changes in v2:
- Renaming variables a more suitable name
1. '--list-all' instead of '--all'
2. 'name' instead of 'subkey'
3. 'section, name, value' instead of 'given_section, subkey, value'

- Correct small infelicities or typing errors in a perf-config documention.

- Remove a part description of report.children
because it was duplicated in Documentation/callchain-overhead-calculation.txt

- Use a variable 'int actions' instead of struct params which has
'bool list_action' , 'bool get_action’ and etc. , to simplify a branching statement
for perf-config options.

- Declaration a global variable 'static struct default_configsets' has config variables
with default values instead of using a 'util/PERFCONFIG-DEFAULT' file
and remove functions merge() and perse_key() to get perf config default values.

- Add a function to normalize a value and check data type of it.

- Simplify parsing arguments as arguments is just divided by '=' and then
in front of '.' is a section, between '.' and '=' is a name, and behind '=' is a value.

- Print config variables 'struct default_configsets' haven't

- Make a command ’perf config' without a option work as with a option '—list'
instead of '--list-all’.

Taeung Song (5):
perf tools: Add 'perf-config' command
perf config: Add '--system' and '--global' options to be able to
select which config file to be used
perf config: Add functions which can get or set perf config variables
perf config: Add a option 'list-all' to perf-config
perf config: Add a option 'remove' to perf-config

tools/perf/Build | 1 +
tools/perf/Documentation/perf-config.txt | 407 ++++++++++++++++
tools/perf/Documentation/perfconfig.example | 73 ++-
tools/perf/builtin-config.c | 718 ++++++++++++++++++++++++++++
tools/perf/builtin.h | 1 +
tools/perf/command-list.txt | 1 +
tools/perf/perf.c | 1 +
tools/perf/util/cache.h | 19 +
tools/perf/util/config.c | 29 +-
9 files changed, 1236 insertions(+), 14 deletions(-)
create mode 100644 tools/perf/Documentation/perf-config.txt
create mode 100644 tools/perf/builtin-config.c


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