Re: [PATCH 06/10] perf, tools: Collapse identically named events in perf stat

[Jiri Olsa]

On Fri, Jan 27, 2017 at 06:03:41PM -0800, Andi Kleen wrote:

SNIP

> +static void collect_all_aliases(struct perf_evsel *counter,
> +                         void (*cb)(struct perf_evsel *counter, void *data,
> +                                    bool first),
> +                         void *data)
> +{
> +     struct perf_evsel *alias;
> +
> +     alias = list_prepare_entry(counter, &(evsel_list->entries), node);
> +     list_for_each_entry_continue (alias, &evsel_list->entries, node) {
> +             if (strcmp(perf_evsel__name(alias), perf_evsel__name(counter)) 
> ||
> +                 alias->scale != counter->scale ||
> +                 alias->cgrp != counter->cgrp ||
> +                 strcmp(alias->unit, counter->unit) ||
> +                 nsec_counter(alias) != nsec_counter(counter))
> +                     break;
> +             alias->merged_stat = true;
> +             cb(alias, data, false);
> +     }
> +}
> +
> +static void collect_aliases(struct perf_evsel *counter,
> +                         void (*cb)(struct perf_evsel *counter, void *data,
> +                                    bool first),
> +                         void *data)
> +{
> +     cb(counter, data, true);
> +     if (!no_merge)
> +             collect_all_aliases(counter, cb, data);
> +}

could you please split this into 2 changes:
  - adding adding collect_aliases function with no functional change
    just changing all the print callers to use it
  - adding collect_all_aliases change that actualy change the behaviour
    and merges the stats

also please change the collect_aliases name to something
generic like collect data

thanks,
jirka