linux-kernel - [PATCH v2 02/23] perf evlist: Remove evlist__warn_hybrid

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Message-Id: <20230522064330.189127-3-irogers@google.com>
Date:   Sun, 21 May 2023 23:43:09 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        John Garry <john.g.garry@...cle.com>,
        Will Deacon <will@...nel.org>,
        James Clark <james.clark@....com>,
        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>,
        Kajol Jain <kjain@...ux.ibm.com>,
        Jing Zhang <renyu.zj@...ux.alibaba.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        Ravi Bangoria <ravi.bangoria@....com>,
        Madhavan Srinivasan <maddy@...ux.ibm.com>,
        Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
        Ming Wang <wangming01@...ngson.cn>,
        Huacai Chen <chenhuacai@...nel.org>,
        Sandipan Das <sandipan.das@....com>,
        Dmitrii Dolgov <9erthalion6@...il.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Ali Saidi <alisaidi@...zon.com>, Rob Herring <robh@...nel.org>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        Kang Minchul <tegongkang@...il.com>,
        linux-kernel@...r.kernel.org, coresight@...ts.linaro.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-perf-users@...r.kernel.org
Subject: [PATCH v2 02/23] 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.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/builtin-stat.c       |  3 ---
 tools/perf/util/evlist-hybrid.c | 32 --------------------------------
 tools/perf/util/evlist-hybrid.h |  1 -
 3 files changed, 36 deletions(-)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 612467216306..084cc570b8e8 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -187,9 +187,6 @@ 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);
 
diff --git a/tools/perf/util/evlist-hybrid.c b/tools/perf/util/evlist-hybrid.c
index db3f5fbdebe1..0f59c80f27b2 100644
--- a/tools/perf/util/evlist-hybrid.c
+++ b/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;
diff --git a/tools/perf/util/evlist-hybrid.h b/tools/perf/util/evlist-hybrid.h
index 19f74b4c340a..4b000eda6626 100644
--- a/tools/perf/util/evlist-hybrid.h
+++ b/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 */
-- 
2.40.1.698.g37aff9b760-goog