perf evlist: Remove evlist__warn_hybrid_group

Parse events now corrects PMU groups in
parse_events__sort_events_and_fix_groups and so this warning is no
longer possible.

Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ali Saidi <alisaidi@amazon.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Dmitrii Dolgov <9erthalion6@gmail.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jing Zhang <renyu.zj@linux.alibaba.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: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20230527072210.2900565-13-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-stat.c

@@ -189,9 +189,6 @@ static void evlist__check_cpu_maps(struct evlist *evlist)
 {
 	struct evsel *evsel, *warned_leader = NULL;
 
-	if (evlist__has_hybrid(evlist))
-		evlist__warn_hybrid_group(evlist);
-
 	evlist__for_each_entry(evlist, evsel) {
 		struct evsel *leader = evsel__leader(evsel);
 

tools/perf/util/evlist-hybrid.c

@@ -41,38 +41,6 @@ int evlist__add_default_hybrid(struct evlist *evlist, bool precise)
 	return 0;
 }
 
-static bool group_hybrid_conflict(struct evsel *leader)
-{
-	struct evsel *pos, *prev = NULL;
-
-	for_each_group_evsel(pos, leader) {
-		if (!evsel__is_hybrid(pos))
-			continue;
-
-		if (prev && strcmp(prev->pmu_name, pos->pmu_name))
-			return true;
-
-		prev = pos;
-	}
-
-	return false;
-}
-
-void evlist__warn_hybrid_group(struct evlist *evlist)
-{
-	struct evsel *evsel;
-
-	evlist__for_each_entry(evlist, evsel) {
-		if (evsel__is_group_leader(evsel) &&
-		    evsel->core.nr_members > 1 &&
-		    group_hybrid_conflict(evsel)) {
-			pr_warning("WARNING: events in group from "
-				   "different hybrid PMUs!\n");
-			return;
-		}
-	}
-}
-
 bool evlist__has_hybrid(struct evlist *evlist)
 {
 	struct evsel *evsel;

tools/perf/util/evlist-hybrid.h

@@ -8,7 +8,6 @@
 #include <unistd.h>
 
 int evlist__add_default_hybrid(struct evlist *evlist, bool precise);
-void evlist__warn_hybrid_group(struct evlist *evlist);
 bool evlist__has_hybrid(struct evlist *evlist);
 
 #endif /* __PERF_EVLIST_HYBRID_H */