SNIP
> diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
> index bf5d033ee1b4..3c52d0ab9270 100644
> --- a/tools/perf/util/parse-events.c
> +++ b/tools/perf/util/parse-events.c
> @@ -830,6 +830,7 @@ int parse_events(struct perf_evlist *evlist, const char
> *str,
> if (!ret) {
> int entries = data.idx - evlist->nr_entries;
> perf_evlist__splice_list_tail(evlist, &data.list, entries);
> + evlist->nr_groups += data.nr_groups;
> return 0;
> }
>
> diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
> index c356e443448d..f6b0254afe17 100644
> --- a/tools/perf/util/parse-events.h
> +++ b/tools/perf/util/parse-events.h
> @@ -65,6 +65,7 @@ struct parse_events__term {
> struct parse_events_data__events {
> struct list_head list;
> int idx;
> + int nr_groups;
> };
>
> struct parse_events_data__terms {
> diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
> index cd88209e3c58..d14bb507594b 100644
> --- a/tools/perf/util/parse-events.y
> +++ b/tools/perf/util/parse-events.y
> @@ -122,7 +122,9 @@ group_def:
> PE_NAME '{' events '}'
> {
> struct list_head *list = $3;
> + struct parse_events_data__events *data = _data;
>
> + data->nr_groups++;
perhaps if you inc nr_groups only if there's more than 1 event,
you would not need your next patch:
perf evlist: Add perf_evlist__recalc_nr_groups
something like:
if (!list_is_last(list))
data->nr_groups++;
jirka
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