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

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Date:   Tue, 15 Aug 2017 01:39:57 +0900
From:   Taeung Song <treeze.taeung@...il.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>,
        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 08/15/2017 01:31 AM, Arnaldo Carvalho de Melo wrote:
> Em Mon, Aug 14, 2017 at 07:42:07PM +0900, Taeung Song escreveu:
>> On 08/01/2017 03:24 PM, Taeung Song wrote:
>>> 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?
> 
>>> 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.
> 
> That is inapropriate, if the user asks for both --show-total-period and
> --show-nr-samples, then it either should show both or bail out telling
> that that is not possible.
> 
> - Arnaldo
> 

ok, got it, I'll send changed this patch based on your comment !

Thanks,
Taeung

>>> What do you think about it ?
>>> we need to prevent users from using both ?
>>>
>>> Thanks,
>>> Taeung
>>
>>
>> ping !
>>
>>>
>>>>> 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