perf tools: Rename parse_events__free_terms() to parse_events_terms__delete()

To follow convention used in other tools/perf/ areas. Also remove the
need to check if it is NULL before calling the destructor, again, to
follow convention that goes back to free().

Cc: Alexei Starovoitov <ast@kernel.org>
Cc: He Kuang <hekuang@huawei.com>
cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/n/tip-w6owu7rb8a46gvunlinxaqwx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/arch/x86/util/intel-pt.c

@@ -89,7 +89,7 @@ static int intel_pt_parse_terms_with_default(struct list_head *formats,
 
 	*config = attr.config;
 out_free:
-	parse_events__free_terms(terms);
+	parse_events_terms__delete(terms);
 	return err;
 }
 

tools/perf/util/parse-events.c

@@ -1386,8 +1386,7 @@ int parse_events_terms(struct list_head *terms, const char *str)
 		return 0;
 	}
 
-	if (data.terms)
-		parse_events__free_terms(data.terms);
+	parse_events_terms__delete(data.terms);
 	return ret;
 }
 
@@ -2078,8 +2077,10 @@ void parse_events_terms__purge(struct list_head *terms)
 	}
 }
 
-void parse_events__free_terms(struct list_head *terms)
+void parse_events_terms__delete(struct list_head *terms)
 {
+	if (!terms)
+		return;
 	parse_events_terms__purge(terms);
 	free(terms);
 }

tools/perf/util/parse-events.h

@@ -115,7 +115,7 @@ int parse_events_term__sym_hw(struct parse_events_term **term,
 			      char *config, unsigned idx);
 int parse_events_term__clone(struct parse_events_term **new,
 			     struct parse_events_term *term);
-void parse_events__free_terms(struct list_head *terms);
+void parse_events_terms__delete(struct list_head *terms);
 void parse_events_terms__purge(struct list_head *terms);
 int parse_events__modifier_event(struct list_head *list, char *str, bool add);
 int parse_events__modifier_group(struct list_head *list, char *event_mod);

tools/perf/util/parse-events.y

@@ -218,7 +218,7 @@ PE_NAME '/' event_config '/'
 
 	ALLOC_LIST(list);
 	ABORT_ON(parse_events_add_pmu(data, list, $1, $3));
-	parse_events__free_terms($3);
+	parse_events_terms__delete($3);
 	$$ = list;
 }
 |
@@ -246,7 +246,7 @@ PE_KERNEL_PMU_EVENT sep_dc
 
 	ALLOC_LIST(list);
 	ABORT_ON(parse_events_add_pmu(data, list, "cpu", head));
-	parse_events__free_terms(head);
+	parse_events_terms__delete(head);
 	$$ = list;
 }
 |
@@ -266,7 +266,7 @@ PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc
 
 	ALLOC_LIST(list);
 	ABORT_ON(parse_events_add_pmu(data, list, "cpu", head));
-	parse_events__free_terms(head);
+	parse_events_terms__delete(head);
 	$$ = list;
 }
 
@@ -285,7 +285,7 @@ value_sym '/' event_config '/'
 
 	ALLOC_LIST(list);
 	ABORT_ON(parse_events_add_numeric(data, list, type, config, $3));
-	parse_events__free_terms($3);
+	parse_events_terms__delete($3);
 	$$ = list;
 }
 |