linux-kernel - Re: [PATCH v4 5/9] perf annotate stdio: Support --show-nr-samples option

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Message-ID: <74531f74-f466-117f-902d-c5b431d45935@gmail.com>
Date:   Tue, 1 Aug 2017 15:26:20 +0900
From:   Taeung Song <treeze.taeung@...il.com>
To:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
Cc:     linux-kernel@...r.kernel.org, Namhyung Kim <namhyung@...nel.org>,
        Milian Wolff <milian.wolff@...b.com>,
        Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH v4 5/9] perf annotate stdio: Support --show-nr-samples
 option



On 07/29/2017 01:26 AM, Arnaldo Carvalho de Melo wrote:
> Em Fri, Jul 28, 2017 at 01:16:16AM +0900, Taeung Song escreveu:
>> Add --show-nr-samples option to perf-annotate
>> so that it corresponds with perf-report.
> 
> So this is not that intuitive, i.e. if one ask for:
> 
>    perf annotate --show-total-period --show-nr-samples
> 
> then both should appear, no?
> 
> - Arnaldo

I thought the users can use both --show-total-period and --show-nr-samples,
but perf-annotate can preferentially show the total period view IMHO.

What do you think about it ?
we need to prevent users from using both ?

Thanks,
Taeung

>   
>> Cc: Namhyung Kim <namhyung@...nel.org>
>> Cc: Milian Wolff <milian.wolff@...b.com>
>> Cc: Jiri Olsa <jolsa@...hat.com>
>> Signed-off-by: Taeung Song <treeze.taeung@...il.com>
>> ---
>>   tools/perf/builtin-annotate.c | 2 ++
>>   tools/perf/util/annotate.c    | 6 +++++-
>>   2 files changed, 7 insertions(+), 1 deletion(-)
>>
>> diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
>> index 6db782d..a8e6db2 100644
>> --- a/tools/perf/builtin-annotate.c
>> +++ b/tools/perf/builtin-annotate.c
>> @@ -447,6 +447,8 @@ int cmd_annotate(int argc, const char **argv)
>>   		    "Show event group information together"),
>>   	OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
>>   		    "Show a column with the sum of periods"),
>> +	OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
>> +		    "Show a column with the number of samples"),
>>   	OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
>>   			     "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
>>   			     stdio__config_color, "always"),
>> diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
>> index 5125c2b..7032bdc 100644
>> --- a/tools/perf/util/annotate.c
>> +++ b/tools/perf/util/annotate.c
>> @@ -1144,6 +1144,9 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
>>   			if (symbol_conf.show_total_period)
>>   				color_fprintf(stdout, color, " %11" PRIu64,
>>   					      sample.period);
>> +			else if (symbol_conf.show_nr_samples)
>> +				color_fprintf(stdout, color, " %7" PRIu64,
>> +					      sample.nr_samples);
>>   			else
>>   				color_fprintf(stdout, color, " %7.2f", percent);
>>   		}
>> @@ -1824,7 +1827,8 @@ int symbol__annotate_printf(struct symbol *sym, struct map *map,
>>   		width *= evsel->nr_members;
>>   
>>   	graph_dotted_len = printf(" %-*.*s|	Source code & Disassembly of %s for %s (%" PRIu64 " samples)\n",
>> -				  width, width, symbol_conf.show_total_period ? "Event count" : "Percent",
>> +				  width, width, symbol_conf.show_total_period ? "Event count" :
>> +				  symbol_conf.show_nr_samples ? "Samples" : "Percent",
>>   				  d_filename, evsel_name, h->nr_samples);
>>   
>>   	printf("%-*.*s----\n",
>> -- 
>> 2.7.4