perf parse: Add a deep delete for parse event terms

Add a parse_events_term deep delete function so that owned strings and
arrays are freed.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Yonghong Song <yhs@fb.com>
Cc: bpf@vger.kernel.org
Cc: clang-built-linux@googlegroups.com
Cc: netdev@vger.kernel.org
Link: http://lore.kernel.org/lkml/20191030223448.12930-10-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index a0a80f4..6d18ff9 100644 (file)
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -2812,6 +2812,18 @@ int parse_events_term__clone(struct parse_events_term **new,
        return new_term(new, &temp, str, 0);
 }
 
+void parse_events_term__delete(struct parse_events_term *term)
+{
+       if (term->array.nr_ranges)
+               zfree(&term->array.ranges);
+
+       if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM)
+               zfree(&term->val.str);
+
+       zfree(&term->config);
+       free(term);
+}
+
 int parse_events_copy_term_list(struct list_head *old,
                                 struct list_head **new)
 {
@@ -2842,10 +2854,8 @@ void parse_events_terms__purge(struct list_head *terms)
        struct parse_events_term *term, *h;
 
        list_for_each_entry_safe(term, h, terms, list) {
-               if (term->array.nr_ranges)
-                       zfree(&term->array.ranges);
                list_del_init(&term->list);
-               free(term);
+               parse_events_term__delete(term);
        }
 }
 

diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 34f58d2..5ee8ac9 100644 (file)
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -139,6 +139,7 @@ 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_term__delete(struct parse_events_term *term);
 void parse_events_terms__delete(struct list_head *terms);
 void parse_events_terms__purge(struct list_head *terms);
 void parse_events__clear_array(struct parse_events_array *a);

diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 376b198..4cac830 100644 (file)
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -49,14 +49,6 @@ static void free_list_evsel(struct list_head* list_evsel)
        free(list_evsel);
 }
 
-static void free_term(struct parse_events_term *term)
-{
-       if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR)
-               free(term->val.str);
-       zfree(&term->array.ranges);
-       free(term);
-}
-
 static void inc_group_count(struct list_head *list,
                       struct parse_events_state *parse_state)
 {
@@ -99,7 +91,7 @@ static void inc_group_count(struct list_head *list,
 %type <str> PE_DRV_CFG_TERM
 %destructor { free ($$); } <str>
 %type <term> event_term
-%destructor { free_term ($$); } <term>
+%destructor { parse_events_term__delete ($$); } <term>
 %type <list_terms> event_config
 %type <list_terms> opt_event_config
 %type <list_terms> opt_pmu_config
@@ -694,7 +686,7 @@ event_config ',' event_term
        struct parse_events_term *term = $3;
 
        if (!head) {
-               free_term(term);
+               parse_events_term__delete(term);
                YYABORT;
        }
        list_add_tail(&term->list, head);

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index f9f427d..db1e571 100644 (file)
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -1260,7 +1260,7 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms,
                info->metric_name = alias->metric_name;
 
                list_del_init(&term->list);
-               free(term);
+               parse_events_term__delete(term);
        }
 
        /*