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Re: [PATCH 02/23] perf buildid-cache: Add -q/--quiet option

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  Re: [PATCH 02/23] perf buildid-cache: Add -q/--quiet option Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-07 16:40 +0100
    Re: [PATCH 02/23] perf buildid-cache: Add -q/--quiet option Namhyung Kim <namhyung@kernel.org> - 2017-03-07 18:30 +0100

#1594364 — Re: [PATCH 02/23] perf buildid-cache: Add -q/--quiet option

Em Wed, Mar 08, 2017 at 12:08:30AM +0900, Namhyung Kim escreveu:
> The -q/--quiet option is to suppress any message.  Sometimes users just
> want to run the command and it can be used for that case.

<SNIP>

> +++ b/tools/perf/builtin-buildid-cache.c
> @@ -311,6 +311,7 @@ int cmd_buildid_cache(int argc, const char **argv,
>  	OPT_INCR('v', "verbose", &verbose, "be more verbose"),
> +	OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
>  	OPT_END()
>  	};
>  	const char * const buildid_cache_usage[] = {
> @@ -326,6 +327,9 @@ int cmd_buildid_cache(int argc, const char **argv,
>  
> +	if (quiet)
> +		perf_quiet_option();
> +

Hey, I see that this is done lots of times, can't we use that parent
option stuff? Or some fallback we can have in perf's main() for thing
like this?

- Arnaldo

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#1594451

Hi Arnaldo,

On Wed, Mar 8, 2017 at 12:28 AM, Arnaldo Carvalho de Melo
<acme@kernel.org> wrote:
> Em Wed, Mar 08, 2017 at 12:08:30AM +0900, Namhyung Kim escreveu:
>> The -q/--quiet option is to suppress any message.  Sometimes users just
>> want to run the command and it can be used for that case.
>
> <SNIP>
>
>> +++ b/tools/perf/builtin-buildid-cache.c
>> @@ -311,6 +311,7 @@ int cmd_buildid_cache(int argc, const char **argv,
>>       OPT_INCR('v', "verbose", &verbose, "be more verbose"),
>> +     OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
>>       OPT_END()
>>       };
>>       const char * const buildid_cache_usage[] = {
>> @@ -326,6 +327,9 @@ int cmd_buildid_cache(int argc, const char **argv,
>>
>> +     if (quiet)
>> +             perf_quiet_option();
>> +
>
> Hey, I see that this is done lots of times, can't we use that parent
> option stuff? Or some fallback we can have in perf's main() for thing
> like this?

I thought about it.  But perf main option handling is different from
command options.  Also it needs to be called after option parsing
is done to overwrite 'verbose' properly.

Thanks,
Namhyung

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