From 52c7b4d3f9c12c44b8392765c73cced3be99cec6 Mon Sep 17 00:00:00 2001
From: Ian Rogers <irogers@google.com>
Date: Tue, 2 May 2023 15:38:43 -0700
Subject: [PATCH] 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@google.com>
Tested-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kang Minchul <tegongkang@gmail.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Link: https://lore.kernel.org/r/20230502223851.2234828-37-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.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 5d5d77f..2dad88a 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 f4ee03b..4e1f5de 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 cd4247a..f4f0afb 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 5a19536..0e0cb62 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);
 
-- 
2.7.4