linux-kernel - Re: [PATCH v3 1/5] perf annotate stdio: Support --show-nr-samples option

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Date:   Mon, 21 Aug 2017 14:33:06 +0900
From:   Taeung Song <treeze.taeung@...il.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     linux-kernel@...r.kernel.org, taeung@...slab.kr,
        Namhyung Kim <namhyung@...nel.org>,
        Milian Wolff <milian.wolff@...b.com>,
        Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH v3 1/5] perf annotate stdio: Support --show-nr-samples
 option



On 08/18/2017 10:33 PM, Arnaldo Carvalho de Melo wrote:
> Em Fri, Aug 18, 2017 at 05:46:48PM +0900, Taeung Song escreveu:
>> Add --show-nr-samples option to perf-annotate
>> so that it corresponds with perf-report.
> 
> So, at this point I tried to test it and forgot this was just about
> --stdio, which confused me, so I added the following patch, that I'll
> lift when adding the browser support, which may not happen at this time
> if there are problems there.
> 
> @@ -473,6 +474,11 @@ int cmd_annotate(int argc, const char **argv)
>                  annotate.sym_hist_filter = argv[0];
>          }
>   
> +       if (symbol_conf.show_nr_samples && !annotate.use_stdio) {
> +               pr_err("--show-nr-samples is only available in --stdio mode at this time\n");
> +               return ret;
> +       }
> +
> 
> - Arnaldo
> 

Ok, got it.

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/Documentation/perf-annotate.txt | 4 ++++
>>   tools/perf/builtin-annotate.c              | 2 ++
>>   tools/perf/util/annotate.c                 | 6 +++++-
>>   3 files changed, 11 insertions(+), 1 deletion(-)
>>
>> diff --git a/tools/perf/Documentation/perf-annotate.txt b/tools/perf/Documentation/perf-annotate.txt
>> index a89273d..2a5975c 100644
>> --- a/tools/perf/Documentation/perf-annotate.txt
>> +++ b/tools/perf/Documentation/perf-annotate.txt
>> @@ -43,6 +43,10 @@ OPTIONS
>>   --quiet::
>>   	Do not show any message.  (Suppress -v)
>>   
>> +-n::
>> +--show-nr-samples::
>> +	Show the number of samples for each symbol
>> +
>>   -D::
>>   --dump-raw-trace::
>>           Dump raw trace in ASCII.
>> diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
>> index 658c920..acde4cc 100644
>> --- a/tools/perf/builtin-annotate.c
>> +++ b/tools/perf/builtin-annotate.c
>> @@ -445,6 +445,8 @@ 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 2dab0e5..4397a8b 100644
>> --- a/tools/perf/util/annotate.c
>> +++ b/tools/perf/util/annotate.c
>> @@ -1145,6 +1145,9 @@ 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);
>>   		}
>> @@ -1825,7 +1828,8 @@ 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 ? "Period" :
>> +				  symbol_conf.show_nr_samples ? "Samples" : "Percent",
>>   				  d_filename, evsel_name, h->nr_samples);
>>   
>>   	printf("%-*.*s----\n",
>> -- 
>> 2.7.4