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 13:20:35 +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

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 ?

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 ?


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(-)
>