linux-kernel - [PATCH v3 38/46] perf parse-events: Don't auto merge hybrid wildcard events

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Date:   Fri, 28 Apr 2023 22:34:58 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Ahmad Yasin <ahmad.yasin@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Stephane Eranian <eranian@...gle.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Perry Taylor <perry.taylor@...el.com>,
        Samantha Alt <samantha.alt@...el.com>,
        Caleb Biggers <caleb.biggers@...el.com>,
        Weilin Wang <weilin.wang@...el.com>,
        Edward Baker <edward.baker@...el.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Florian Fischer <florian.fischer@...q.space>,
        Rob Herring <robh@...nel.org>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        John Garry <john.g.garry@...cle.com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        Sumanth Korikkar <sumanthk@...ux.ibm.com>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Ravi Bangoria <ravi.bangoria@....com>,
        Leo Yan <leo.yan@...aro.org>,
        Yang Jihong <yangjihong1@...wei.com>,
        James Clark <james.clark@....com>,
        Suzuki Poulouse <suzuki.poulose@....com>,
        Kang Minchul <tegongkang@...il.com>,
        Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Ian Rogers <irogers@...gle.com>
Subject: [PATCH v3 38/46] perf parse-events: Don't auto merge hybrid wildcard events

Bring back the behavior of not auto-merging hybrid events by
delegating to a test in pmu.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/parse-events.c | 5 ++++-
 tools/perf/util/parse-events.y | 4 +++-
 tools/perf/util/pmu.c          | 5 +++++
 tools/perf/util/pmu.h          | 1 +
 4 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 5d5d77fa398b..2dad88a6bf19 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1714,16 +1714,19 @@ int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
 
 	while ((pmu = perf_pmu__scan(pmu)) != NULL) {
 		struct perf_pmu_alias *alias;
+		bool auto_merge_stats;
 
 		if (parse_events__filter_pmu(parse_state, pmu))
 			continue;
 
+		auto_merge_stats = perf_pmu__auto_merge_stats(pmu);
+
 		list_for_each_entry(alias, &pmu->aliases, list) {
 			if (!strcasecmp(alias->name, str)) {
 				parse_events_copy_term_list(head, &orig_head);
 				if (!parse_events_add_pmu(parse_state, list,
 							  pmu->name, orig_head,
-							  /*auto_merge_stats=*/true)) {
+							  auto_merge_stats)) {
 					pr_debug("%s -> %s/%s/\n", str,
 						 pmu->name, alias->str);
 					ok++;
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index f4ee03b5976b..4e1f5de35be8 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -327,10 +327,12 @@ PE_NAME opt_pmu_config
 				name += 7;
 			if (!perf_pmu__match(pattern, name, $1) ||
 			    !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_add_pmu(parse_state, list, pmu->name, terms,
-							  /*auto_merge_stats=*/true)) {
+							  auto_merge_stats)) {
 					ok++;
 					parse_state->wild_card_pmus = true;
 				}
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index cd4247a379d4..f4f0afbc391c 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -1660,6 +1660,11 @@ bool perf_pmu__supports_wildcard_numeric(const struct perf_pmu *pmu)
 	return is_pmu_core(pmu->name) || perf_pmu__is_hybrid(pmu->name);
 }
 
+bool perf_pmu__auto_merge_stats(const struct perf_pmu *pmu)
+{
+	return !perf_pmu__is_hybrid(pmu->name);
+}
+
 static bool pmu_alias_is_duplicate(struct sevent *alias_a,
 				   struct sevent *alias_b)
 {
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 5a19536a5449..0e0cb6283594 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -222,6 +222,7 @@ struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu);
 bool is_pmu_core(const char *name);
 bool perf_pmu__supports_legacy_cache(const struct perf_pmu *pmu);
 bool perf_pmu__supports_wildcard_numeric(const struct perf_pmu *pmu);
+bool perf_pmu__auto_merge_stats(const struct perf_pmu *pmu);
 void print_pmu_events(const struct print_callbacks *print_cb, void *print_state);
 bool pmu_have_event(const char *pname, const char *name);
 
-- 
2.40.1.495.gc816e09b53d-goog