diff options
Diffstat (limited to 'tools/perf/util/parse-events.y')
| -rw-r--r-- | tools/perf/util/parse-events.y | 41 |
1 files changed, 25 insertions, 16 deletions
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y index 31fe8cf428ff..51490f0f8c50 100644 --- a/tools/perf/util/parse-events.y +++ b/tools/perf/util/parse-events.y @@ -125,6 +125,10 @@ static void free_list_evsel(struct list_head* list_evsel) } %% + /* + * Entry points. We are either parsing events or terminals. Just terminal + * parsing is used for parsing events in sysfs. + */ start: PE_START_EVENTS start_events | @@ -132,31 +136,36 @@ PE_START_TERMS start_terms start_events: groups { + /* Take the parsed events, groups.. and place into parse_state. */ + struct list_head *groups = $1; struct parse_events_state *parse_state = _parse_state; - /* frees $1 */ - parse_events_update_lists($1, &parse_state->list); + list_splice_tail(groups, &parse_state->list); + free(groups); } -groups: +groups: /* A list of groups or events. */ groups ',' group { - struct list_head *list = $1; - struct list_head *group = $3; + /* Merge group into the list of events/groups. */ + struct list_head *groups = $1; + struct list_head *group = $3; - /* frees $3 */ - parse_events_update_lists(group, list); - $$ = list; + list_splice_tail(group, groups); + free(group); + $$ = groups; } | groups ',' event { - struct list_head *list = $1; + /* Merge event into the list of events/groups. */ + struct list_head *groups = $1; struct list_head *event = $3; - /* frees $3 */ - parse_events_update_lists(event, list); - $$ = list; + + list_splice_tail(event, groups); + free(event); + $$ = groups; } | group @@ -206,12 +215,12 @@ PE_NAME '{' events '}' events: events ',' event { + struct list_head *events = $1; struct list_head *event = $3; - struct list_head *list = $1; - /* frees $3 */ - parse_events_update_lists(event, list); - $$ = list; + list_splice_tail(event, events); + free(event); + $$ = events; } | event |