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From: Anshuman Khandual <anshuman.khandual@arm.com>
To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: Anshuman Khandual <anshuman.khandual@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	James Clark <james.clark@arm.com>, Rob Herring <robh@kernel.org>,
	Marc Zyngier <maz@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	linux-perf-users@vger.kernel.org
Subject: [RFC V2 4/8] arm64/perf: Update struct pmu_hw_events for BRBE
Date: Tue, 12 Apr 2022 17:24:51 +0530	[thread overview]
Message-ID: <20220412115455.293119-5-anshuman.khandual@arm.com> (raw)
In-Reply-To: <20220412115455.293119-1-anshuman.khandual@arm.com>

A single perf event instance BRBE related contexts and data will be tracked
in struct pmu_hw_events. Hence update the structure to accommodate required
details related to BRBE.

Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 include/linux/perf/arm_pmu.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h
index 3d427ac0ca45..18e519e4e658 100644
--- a/include/linux/perf/arm_pmu.h
+++ b/include/linux/perf/arm_pmu.h
@@ -43,6 +43,11 @@
 	},								\
 }
 
+/*
+ * Maximum branch records in BRBE
+ */
+#define BRBE_MAX_ENTRIES 64
+
 /* The events for a given PMU register set. */
 struct pmu_hw_events {
 	/*
@@ -69,6 +74,23 @@ struct pmu_hw_events {
 	struct arm_pmu		*percpu_pmu;
 
 	int irq;
+
+	/* Detected BRBE attributes */
+	bool				v1p1;
+	int				brbe_cc;
+	int				brbe_nr;
+
+	/* Evaluated BRBE configuration */
+	u64				brbfcr;
+	u64				brbcr;
+
+	/* Tracked BRBE context */
+	unsigned int			brbe_users;
+	void				*brbe_context;
+
+	/* Captured BRBE buffer - copied as is into perf_sample_data */
+	struct perf_branch_stack	brbe_stack;
+	struct perf_branch_entry	brbe_entries[BRBE_MAX_ENTRIES];
 };
 
 enum armpmu_attr_groups {
-- 
2.25.1


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WARNING: multiple messages have this Message-ID (diff)
From: Anshuman Khandual <anshuman.khandual@arm.com>
To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: Anshuman Khandual <anshuman.khandual@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	James Clark <james.clark@arm.com>, Rob Herring <robh@kernel.org>,
	Marc Zyngier <maz@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	linux-perf-users@vger.kernel.org
Subject: [RFC V2 4/8] arm64/perf: Update struct pmu_hw_events for BRBE
Date: Tue, 12 Apr 2022 17:24:51 +0530	[thread overview]
Message-ID: <20220412115455.293119-5-anshuman.khandual@arm.com> (raw)
In-Reply-To: <20220412115455.293119-1-anshuman.khandual@arm.com>

A single perf event instance BRBE related contexts and data will be tracked
in struct pmu_hw_events. Hence update the structure to accommodate required
details related to BRBE.

Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 include/linux/perf/arm_pmu.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h
index 3d427ac0ca45..18e519e4e658 100644
--- a/include/linux/perf/arm_pmu.h
+++ b/include/linux/perf/arm_pmu.h
@@ -43,6 +43,11 @@
 	},								\
 }
 
+/*
+ * Maximum branch records in BRBE
+ */
+#define BRBE_MAX_ENTRIES 64
+
 /* The events for a given PMU register set. */
 struct pmu_hw_events {
 	/*
@@ -69,6 +74,23 @@ struct pmu_hw_events {
 	struct arm_pmu		*percpu_pmu;
 
 	int irq;
+
+	/* Detected BRBE attributes */
+	bool				v1p1;
+	int				brbe_cc;
+	int				brbe_nr;
+
+	/* Evaluated BRBE configuration */
+	u64				brbfcr;
+	u64				brbcr;
+
+	/* Tracked BRBE context */
+	unsigned int			brbe_users;
+	void				*brbe_context;
+
+	/* Captured BRBE buffer - copied as is into perf_sample_data */
+	struct perf_branch_stack	brbe_stack;
+	struct perf_branch_entry	brbe_entries[BRBE_MAX_ENTRIES];
 };
 
 enum armpmu_attr_groups {
-- 
2.25.1


  parent reply	other threads:[~2022-04-12 12:01 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-12 11:54 [RFC V2 0/8] arm64/perf: Enable branch stack sampling Anshuman Khandual
2022-04-12 11:54 ` Anshuman Khandual
2022-04-12 11:54 ` [RFC V2 1/8] perf: Consolidate branch sample filter helpers Anshuman Khandual
2022-04-12 11:54   ` Anshuman Khandual
2022-04-12 18:00   ` kernel test robot
2022-04-12 18:00   ` kernel test robot
2022-04-12 19:02   ` kernel test robot
2022-04-15  8:19   ` Peter Zijlstra
2022-04-15  8:19     ` Peter Zijlstra
2022-04-12 11:54 ` [RFC V2 2/8] arm64/perf: Add register definitions for BRBE Anshuman Khandual
2022-04-12 11:54   ` Anshuman Khandual
2022-04-12 11:54 ` [RFC V2 3/8] arm64/perf: Update struct arm_pmu " Anshuman Khandual
2022-04-12 11:54   ` Anshuman Khandual
2022-04-12 11:54 ` Anshuman Khandual [this message]
2022-04-12 11:54   ` [RFC V2 4/8] arm64/perf: Update struct pmu_hw_events " Anshuman Khandual
2022-04-12 11:54 ` [RFC V2 5/8] driver/perf/arm_pmu_platform: Add support for BRBE attributes detection Anshuman Khandual
2022-04-12 11:54   ` Anshuman Khandual
2022-04-12 11:54 ` [RFC V2 6/8] arm64/perf: Drive BRBE from perf event states Anshuman Khandual
2022-04-12 11:54   ` Anshuman Khandual
2022-04-12 11:54 ` [RFC V2 7/8] arm64/perf: Add BRBE driver Anshuman Khandual
2022-04-12 11:54   ` Anshuman Khandual
2022-04-12 11:54 ` [RFC V2 8/8] arm64/perf: Enable branch stack sampling Anshuman Khandual
2022-04-12 11:54   ` Anshuman Khandual

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