linux-kernel - Re: [RFC PATCH v5 0/7] perf config: Introduce default config key-value pairs arrays

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Date:	Tue, 12 Jul 2016 15:03:52 +0900
From:	Taeung Song <treeze.taeung@...il.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...nel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Wang Nan <wangnan0@...wei.com>
Subject: Re: [RFC PATCH v5 0/7] perf config: Introduce default config
 key-value pairs arrays



On 07/12/2016 02:37 PM, Namhyung Kim wrote:
> Hi Taeung,
>
> On Tue, Jul 12, 2016 at 01:20:35PM +0900, Taeung Song wrote:
>> Hi, Namhyung :)
>>
>> As you know, the patch work from v3 to v4 took too long time
>> because of a patchset refactoring perf_config().
>>
>> So I guess it is hard for you to recall this patchset for new default
>> config arrays but could you a bit response two simple questions ?
>>
>>
>> 1) I renamed 'fb_ground' to 'fore_back_colors' in struct ui_browser_colorset
>> at ui/browser.c.
>>
>> Is it better than before ?
>
> Not sure.  I don't think the renaming is necessary.  If you do, I
> prefer simpler name like 'colors' or 'color_pair'.
>

I got it!

>>
>> 2) I added not only 'struct default_config_item' but also
>> 'struct default_config_section'.
>> (In order to use const type and 'const struct default_config_item *items'
>> instead of using 'struct list_head items')
>>
>> could you agree this way ?
>
> I'm ok with it.
>

Thanks,
Taeung

>
>
>>
>> On 07/06/2016 02:20 PM, Taeung Song wrote:
>>> Hello, :)
>>>
>>> When initializing default perf config values,
>>> we currently use values of actual type(int, bool, char *, etc.).
>>> But I suggest using default config key-value pairs arrays.
>>>
>>> For example,
>>> If there isn't user config value at ~/.perfconfig for 'annotate.use_offset' config variable,
>>> default value for it is 'true' bool type value in perf like below.
>>>
>>> At ui/browsers/annoate.c
>>>
>>> static struct annotate_browser_opt {
>>>          bool hide_src_code,
>>>               use_offset,
>>> 	    jump_arrows,
>>> 	    show_linenr,
>>> 	    show_nr_jumps,
>>> 	    show_total_period;
>>> } annotate_browser__opts = {
>>>          .use_offset      = true,
>>>          .jump_arrows     = true,
>>> };
>>>
>>> But if we use new config arrays that have all default config key-value pairs,
>>> we could initialize default config values with them.
>>>
>>> If we do, we can manage default perf config values at one spot (like util/config.c)
>>> and It can be easy and simple to modify default config values or add new configs.
>>>
>>> For example,
>>> If we use new default config arrays and there isn't user config value for 'annoate.use_offset'
>>> default value for it will be set as annotate_config_items[CONFIG_ANNOATE_USE_OFFSET].value
>>> instead of actual boolean type value 'true'.
>>>
>>> IMHO, I think it would needed to use new default config arrays
>>> to manage default perf config values more effectively.
>>> And this pathset contains patchs for only 'colors' and 'annoate' section
>>> because waiting for other opinions.
>>>
>>> If you review this patchset, I'd appreciate it :-)
>>>
>>> Thanks,
>>> Taeung
>>>
>>> v5:
>>> - rebased on current acme/perf/core
>>>
>>> v4:
>>> - rename 'fb_ground' to 'fore_back_colors' (Namhyung)
>>> - add struct default_config_section
>>> - split first patch[PATCH 1/7] as two
>>> - remove perf_default_config_init() at perf.c
>>> - rebased on current acme/perf/core
>>>
>>> v3:
>>> - remove default config arrays for the rest sections except 'colors' and 'annotate'
>>> - use combined {fore, back}ground colors instead of each two color
>>> - introduce perf_default_config_init() that call all default_*_config_init()
>>>     for each config section
>>>
>>> v2:
>>> - rename 'ui_browser__config_gcolors' to 'ui_browser__config_colors' (Arnaldo)
>>> - change 'ground colors' to '{back, fore}ground colors' (Arnaldo)
>>> - use strtok + ltrim instead of strchr and while (isspace(*++bg)); (Arnaldo)
>>>
>>> Taeung Song (7):
>>>     perf config: Introduce default_config_section and default_config_item
>>>       for default config key-value pairs
>>>     perf config: Add macros assigning key-value pairs to
>>>       default_config_item
>>>     perf config: Add 'colors' section default configs arrrays
>>>     perf config: Use combined {fore,back}ground colors value instead of
>>>       each two color
>>>     perf config: Initialize ui_browser__colorsets with default config
>>>       items
>>>     perf config: Add 'annotate' section default configs arrrays
>>>     perf config: Initialize annotate_browser__opts with default config
>>>       items
>>>
>>>    tools/perf/ui/browser.c           | 64 +++++++++++++++++-------------
>>>    tools/perf/ui/browsers/annotate.c | 16 ++++++--
>>>    tools/perf/util/config.c          | 26 +++++++++++++
>>>    tools/perf/util/config.h          | 82 +++++++++++++++++++++++++++++++++++++++
>>>    4 files changed, 156 insertions(+), 32 deletions(-)
>>>