[PATCH v5 18/34] perf topology: Avoid hybrid list for hybrid topology

From: Ian Rogers <irogers@google.com>
To: Suzuki K Poulose <suzuki.poulose@arm.com>,
	Mike Leach <mike.leach@linaro.org>,  Leo Yan <leo.yan@linaro.org>,
	John Garry <john.g.garry@oracle.com>,
	 Will Deacon <will@kernel.org>, James Clark <james.clark@arm.com>,
	 Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	 Arnaldo Carvalho de Melo <acme@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	 Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Jiri Olsa <jolsa@kernel.org>,  Namhyung Kim <namhyung@kernel.org>,
	Ian Rogers <irogers@google.com>,
	 Adrian Hunter <adrian.hunter@intel.com>,
	Kajol Jain <kjain@linux.ibm.com>,
	 Jing Zhang <renyu.zj@linux.alibaba.com>,
	Kan Liang <kan.liang@linux.intel.com>,
	 Zhengjun Xing <zhengjun.xing@linux.intel.com>,
	Ravi Bangoria <ravi.bangoria@amd.com>,
	 Madhavan Srinivasan <maddy@linux.ibm.com>,
	Athira Rajeev <atrajeev@linux.vnet.ibm.com>,
	 Ming Wang <wangming01@loongson.cn>,
	Huacai Chen <chenhuacai@kernel.org>,
	 Sandipan Das <sandipan.das@amd.com>,
	Dmitrii Dolgov <9erthalion6@gmail.com>,
	 Sean Christopherson <seanjc@google.com>,
	Ali Saidi <alisaidi@amazon.com>, Rob Herring <robh@kernel.org>,
	 Thomas Richter <tmricht@linux.ibm.com>,
	Kang Minchul <tegongkang@gmail.com>,
	 linux-kernel@vger.kernel.org, coresight@lists.linaro.org,
	 linux-arm-kernel@lists.infradead.org,
	linux-perf-users@vger.kernel.org
Subject: [PATCH v5 18/34] perf topology: Avoid hybrid list for hybrid topology
Date: Sat, 27 May 2023 00:21:54 -0700	[thread overview]
Message-ID: <20230527072210.2900565-19-irogers@google.com> (raw)
In-Reply-To: <20230527072210.2900565-1-irogers@google.com>

Avoid perf_pmu__for_each_hybrid_pmu in hybrid_topology__new by
scanning all PMUs and processing the is_core ones. Add early exit for
non-hybrid.

Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
---
 tools/perf/util/cputopo.c | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/tools/perf/util/cputopo.c b/tools/perf/util/cputopo.c
index ca1d833a0c26..a5c259bd5cc0 100644
--- a/tools/perf/util/cputopo.c
+++ b/tools/perf/util/cputopo.c
@@ -12,7 +12,7 @@
 #include "cpumap.h"
 #include "debug.h"
 #include "env.h"
-#include "pmu-hybrid.h"
+#include "pmu.h"
 
 #define PACKAGE_CPUS_FMT \
 	"%s/devices/system/cpu/cpu%d/topology/package_cpus_list"
@@ -469,11 +469,17 @@ static int load_hybrid_node(struct hybrid_topology_node *node,
 
 struct hybrid_topology *hybrid_topology__new(void)
 {
-	struct perf_pmu *pmu;
+	struct perf_pmu *pmu = NULL;
 	struct hybrid_topology *tp = NULL;
-	u32 nr, i = 0;
+	u32 nr = 0, i = 0;
 
-	nr = perf_pmu__hybrid_pmu_num();
+	if (!perf_pmu__has_hybrid())
+		return NULL;
+
+	while ((pmu = perf_pmu__scan(pmu)) != NULL) {
+		if (pmu->is_core)
+			nr++;
+	}
 	if (nr == 0)
 		return NULL;
 
@@ -482,7 +488,10 @@ struct hybrid_topology *hybrid_topology__new(void)
 		return NULL;
 
 	tp->nr = nr;
-	perf_pmu__for_each_hybrid_pmu(pmu) {
+	while ((pmu = perf_pmu__scan(pmu)) != NULL) {
+		if (!pmu->is_core)
+			continue;
+
 		if (load_hybrid_node(&tp->nodes[i], pmu)) {
 			hybrid_topology__delete(tp);
 			return NULL;
-- 
2.41.0.rc0.172.g3f132b7071-goog


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