perf tools: Factor out PMU matching in parser

Factor out the PMU name matching in the event parser into a separate
function, to use the same code for other grammar rules later.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170320201711.14142-5-andi@firstfloor.org
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 54355d3..c3edb37 100644 (file)
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1260,6 +1260,52 @@ int parse_events_add_pmu(struct parse_events_evlist *data,
        return evsel ? 0 : -ENOMEM;
 }
 
+int parse_events_multi_pmu_add(struct parse_events_evlist *data,
+                              char *str, struct list_head **listp)
+{
+       struct list_head *head;
+       struct parse_events_term *term;
+       struct list_head *list;
+       struct perf_pmu *pmu = NULL;
+       int ok = 0;
+
+       *listp = NULL;
+       /* Add it for all PMUs that support the alias */
+       list = malloc(sizeof(struct list_head));
+       if (!list)
+               return -1;
+       INIT_LIST_HEAD(list);
+       while ((pmu = perf_pmu__scan(pmu)) != NULL) {
+               struct perf_pmu_alias *alias;
+
+               list_for_each_entry(alias, &pmu->aliases, list) {
+                       if (!strcasecmp(alias->name, str)) {
+                               head = malloc(sizeof(struct list_head));
+                               if (!head)
+                                       return -1;
+                               INIT_LIST_HEAD(head);
+                               if (parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
+                                                          str, 1, false, &str, NULL) < 0)
+                                       return -1;
+                               list_add_tail(&term->list, head);
+
+                               if (!parse_events_add_pmu(data, list,
+                                                 pmu->name, head)) {
+                                       pr_debug("%s -> %s/%s/\n", str,
+                                                pmu->name, alias->str);
+                                       ok++;
+                               }
+
+                               parse_events_terms__delete(head);
+                       }
+               }
+       }
+       if (!ok)
+               return -1;
+       *listp = list;
+       return 0;
+}
+
 int parse_events__modifier_group(struct list_head *list,
                                 char *event_mod)
 {

diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 8c72b0f..deca9ce 100644 (file)
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -167,6 +167,11 @@ int parse_events_add_breakpoint(struct list_head *list, int *idx,
 int parse_events_add_pmu(struct parse_events_evlist *data,
                         struct list_head *list, char *name,
                         struct list_head *head_config);
+
+int parse_events_multi_pmu_add(struct parse_events_evlist *data,
+                              char *str,
+                              struct list_head **listp);
+
 enum perf_pmu_event_symbol_type
 perf_pmu__parse_check(const char *name);
 void parse_events__set_leader(char *name, struct list_head *list);

diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 30f018e..36af02f 100644 (file)
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -236,37 +236,9 @@ PE_NAME opt_event_config
 |
 PE_KERNEL_PMU_EVENT sep_dc
 {
-       struct parse_events_evlist *data = _data;
-       struct list_head *head;
-       struct parse_events_term *term;
        struct list_head *list;
-       struct perf_pmu *pmu = NULL;
-       int ok = 0;
 
-       /* Add it for all PMUs that support the alias */
-       ALLOC_LIST(list);
-       while ((pmu = perf_pmu__scan(pmu)) != NULL) {
-               struct perf_pmu_alias *alias;
-
-               list_for_each_entry(alias, &pmu->aliases, list) {
-                       if (!strcasecmp(alias->name, $1)) {
-                               ALLOC_LIST(head);
-                               ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER,
-                                       $1, 1, false, &@1, NULL));
-                               list_add_tail(&term->list, head);
-
-                               if (!parse_events_add_pmu(data, list,
-                                                 pmu->name, head)) {
-                                       pr_debug("%s -> %s/%s/\n", $1,
-                                                pmu->name, alias->str);
-                                       ok++;
-                               }
-
-                               parse_events_terms__delete(head);
-                       }
-               }
-       }
-       if (!ok)
+       if (parse_events_multi_pmu_add(_data, $1, &list) < 0)
                YYABORT;
        $$ = list;
 }