linux-kernel - [PATCH 02/11] perf/x86/intel/uncore: Introduce UPI topology type

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Date:   Thu, 17 Nov 2022 12:28:24 +0000
From:   alexander.antonov@...ux.intel.com
To:     peterz@...radead.org, linux-kernel@...r.kernel.org
Cc:     kan.liang@...ux.intel.com, alexey.v.bayduraev@...ux.intel.com,
        alexander.antonov@...ux.intel.com
Subject: [PATCH 02/11] perf/x86/intel/uncore: Introduce UPI topology type

From: Alexander Antonov <alexander.antonov@...ux.intel.com>

This patch introduces new 'uncore_upi_topology' topology type to support
UPI topology discovery.

Signed-off-by: Alexander Antonov <alexander.antonov@...ux.intel.com>
Reviewed-by: Kan Liang <kan.liang@...ux.intel.com>
---
 arch/x86/events/intel/uncore.h       | 7 +++++++
 arch/x86/events/intel/uncore_snbep.c | 4 +++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/x86/events/intel/uncore.h b/arch/x86/events/intel/uncore.h
index 917cff1e7815..ef1414957623 100644
--- a/arch/x86/events/intel/uncore.h
+++ b/arch/x86/events/intel/uncore.h
@@ -183,11 +183,18 @@ struct uncore_iio_topology {
 	int segment;
 };
 
+struct uncore_upi_topology {
+	int die_to;
+	int pmu_idx_to;
+	int enabled;
+};
+
 struct intel_uncore_topology {
 	int pmu_idx;
 	union {
 		void *untyped;
 		struct uncore_iio_topology *iio;
+		struct uncore_upi_topology *upi;
 	};
 };
 
diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index 469ff889ea08..d3323f13c304 100644
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -3774,11 +3774,13 @@ static int die_to_cpu(int die)
 
 enum {
 	IIO_TOPOLOGY_TYPE,
+	UPI_TOPOLOGY_TYPE,
 	TOPOLOGY_MAX
 };
 
 static const size_t topology_size[TOPOLOGY_MAX] = {
-	sizeof(*((struct intel_uncore_topology *)NULL)->iio)
+	sizeof(*((struct intel_uncore_topology *)NULL)->iio),
+	sizeof(*((struct intel_uncore_topology *)NULL)->upi)
 };
 
 static int pmu_alloc_topology(struct intel_uncore_type *type, int topology_type)
-- 
2.25.1