On Tue, 22 Apr 2014 16:54:49 +0200, Jiri Olsa wrote:
> On Tue, Apr 22, 2014 at 05:49:45PM +0900, Namhyung Kim wrote:
>
> SNIP
>
>>  }
>>  
>>  static int process_sample_event(struct perf_tool *tool,
>> @@ -234,19 +230,17 @@ static int __cmd_annotate(struct perf_annotate *ann)
>>      total_nr_samples = 0;
>>      evlist__for_each(session->evlist, pos) {
>>              struct hists *hists = &pos->hists;
>> -            u32 nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
>>  
>> -            if (nr_samples > 0) {
>
> so this condition of having some data is handled in the
> resort I guess.. hm, it will just iterate 0 times ;-)

Right.  But I decided to keep this logic as is - will explain on other thread.

>
>> -                    total_nr_samples += nr_samples;
>> -                    hists__collapse_resort(hists, NULL);
>> -                    hists__output_resort(hists);
>> +            hists__collapse_resort(hists, NULL);
>> +            hists__output_resort(hists);
>>  
>> -                    if (symbol_conf.event_group &&
>> -                        !perf_evsel__is_group_leader(pos))
>> -                            continue;
>> +            if (symbol_conf.event_group &&
>> +                !perf_evsel__is_group_leader(pos))
>> +                    continue;
>>  
>> -                    hists__find_annotations(hists, pos, ann);
>> -            }
>> +            hists__find_annotations(hists, pos, ann);
>> +
>> +            total_nr_samples += hists->stats.nr_events[PERF_RECORD_SAMPLE];
>>      }
>>  
>>      if (total_nr_samples == 0) {
>>  
>
> SNIP
>
>> diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
>> index 1c77714f668d..f955ae5a41c5 100644
>> --- a/tools/perf/util/hist.c
>> +++ b/tools/perf/util/hist.c
>> @@ -344,9 +344,11 @@ void hists__inc_nr_entries(struct hists *hists, struct 
>> hist_entry *h)
>
> I was wondering for a while about the name of this function
> since it no longer increments only nr_entries.. but could not
> think about any good replacement ;-)
>
> We could also add hists__reset_nr_entries for the zeroing code.

How about hists__inc_stats() and hists__reset_stats()?

>
>
>>              hists__calc_col_len(hists, h);
>
> also having hists__calc_col_len called here seems strange

Agreed.  I'll move this out of the function.

Thanks,
Namhyung
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