linux-kernel - [PATCH v2 07/13] perf parse-events: Separate YYABORT and YYNOMEM cases

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Message-Id: <20230627181030.95608-8-irogers@google.com>
Date:   Tue, 27 Jun 2023 11:10:24 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        bpf@...r.kernel.org
Subject: [PATCH v2 07/13] perf parse-events: Separate YYABORT and YYNOMEM cases

Split cases in event_pmu for greater accuracy.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/parse-events.y | 45 ++++++++++++++++++++--------------
 1 file changed, 26 insertions(+), 19 deletions(-)

diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 3ee351768433..d22866b97b76 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -283,37 +283,42 @@ event_pmu:
 PE_NAME opt_pmu_config
 {
 	struct parse_events_state *parse_state = _parse_state;
-	struct parse_events_error *error = parse_state->error;
 	struct list_head *list = NULL, *orig_terms = NULL, *terms= NULL;
+	struct parse_events_error *error = parse_state->error;
 	char *pattern = NULL;
 
-#define CLEANUP_YYABORT					\
+#define CLEANUP						\
 	do {						\
 		parse_events_terms__delete($2);		\
 		parse_events_terms__delete(orig_terms);	\
 		free(list);				\
 		free($1);				\
 		free(pattern);				\
-		YYABORT;				\
 	} while(0)
 
-	if (parse_events_copy_term_list($2, &orig_terms))
-		CLEANUP_YYABORT;
-
 	if (error)
 		error->idx = @1.first_column;
 
+	if (parse_events_copy_term_list($2, &orig_terms)) {
+		CLEANUP;
+		YYNOMEM;
+	}
+
 	list = alloc_list();
-	if (!list)
-		CLEANUP_YYABORT;
+	if (!list) {
+		CLEANUP;
+		YYNOMEM;
+	}
 	/* Attempt to add to list assuming $1 is a PMU name. */
 	if (parse_events_add_pmu(parse_state, list, $1, $2, /*auto_merge_stats=*/false)) {
 		struct perf_pmu *pmu = NULL;
 		int ok = 0;
 
 		/* Failure to add, try wildcard expansion of $1 as a PMU name. */
-		if (asprintf(&pattern, "%s*", $1) < 0)
-			CLEANUP_YYABORT;
+		if (asprintf(&pattern, "%s*", $1) < 0) {
+			CLEANUP;
+			YYNOMEM;
+		}
 
 		while ((pmu = perf_pmus__scan(pmu)) != NULL) {
 			char *name = pmu->name;
@@ -328,8 +333,10 @@ PE_NAME opt_pmu_config
 			    !perf_pmu__match(pattern, pmu->alias_name, $1)) {
 				bool auto_merge_stats = perf_pmu__auto_merge_stats(pmu);
 
-				if (parse_events_copy_term_list(orig_terms, &terms))
-					CLEANUP_YYABORT;
+				if (parse_events_copy_term_list(orig_terms, &terms)) {
+					CLEANUP;
+					YYNOMEM;
+				}
 				if (!parse_events_add_pmu(parse_state, list, pmu->name, terms,
 							  auto_merge_stats)) {
 					ok++;
@@ -345,15 +352,15 @@ PE_NAME opt_pmu_config
 			ok = !parse_events_multi_pmu_add(parse_state, $1, $2, &list);
 			$2 = NULL;
 		}
-		if (!ok)
-			CLEANUP_YYABORT;
+		if (!ok) {
+			CLEANUP;
+			YYABORT;
+		}
 	}
-	parse_events_terms__delete($2);
-	parse_events_terms__delete(orig_terms);
-	free(pattern);
-	free($1);
 	$$ = list;
-#undef CLEANUP_YYABORT
+	list = NULL;
+	CLEANUP;
+#undef CLEANUP
 }
 |
 PE_NAME sep_dc
-- 
2.41.0.162.gfafddb0af9-goog