perf pmu: Factor term parsing into a perf_event_attr into a helper

Factor existing functionality in perf_pmu__name_from_config into a
helper that will be used in later patches.

Tested-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: James Clark <james.clark@linaro.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

1 files changed, 19 insertions, 14 deletions

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 7992bd923515..2c3e539851c4 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -1763,6 +1763,24 @@ static int check_info_data(struct perf_pmu *pmu,
 	return 0;
 }
 
+static int perf_pmu__parse_terms_to_attr(struct perf_pmu *pmu, const char *terms_str,
+					 struct perf_event_attr *attr)
+{
+	struct parse_events_terms terms;
+	int ret;
+
+	parse_events_terms__init(&terms);
+	ret = parse_events_terms(&terms, terms_str);
+	if (ret) {
+		pr_debug("Failed to parse terms '%s': %d\n", terms_str, ret);
+		parse_events_terms__exit(&terms);
+		return ret;
+	}
+	ret = perf_pmu__config(pmu, attr, &terms, /*apply_hardcoded=*/true, /*err=*/NULL);
+	parse_events_terms__exit(&terms);
+	return ret;
+}
+
 /*
  * Find alias in the terms list and replace it with the terms
  * defined for the alias
@@ -2596,21 +2614,8 @@ const char *perf_pmu__name_from_config(struct perf_pmu *pmu, u64 config)
 	hashmap__for_each_entry(pmu->aliases, entry, bkt) {
 		struct perf_pmu_alias *event = entry->pvalue;
 		struct perf_event_attr attr = {.config = 0,};
-		struct parse_events_terms terms;
-		int ret;
+		int ret = perf_pmu__parse_terms_to_attr(pmu, event->terms, &attr);
 
-		parse_events_terms__init(&terms);
-		ret = parse_events_terms(&terms, event->terms);
-		if (ret) {
-			pr_debug("Failed to parse '%s' terms '%s': %d\n",
-				event->name, event->terms, ret);
-			parse_events_terms__exit(&terms);
-			continue;
-		}
-		ret = perf_pmu__config(pmu, &attr, &terms, /*apply_hardcoded=*/true,
-				       /*err=*/NULL);
-
-		parse_events_terms__exit(&terms);
 		if (ret == 0 && config == attr.config)
 			return event->name;
 	}