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From: "Rob Herring (Arm)" <robh@kernel.org>
To: Will Deacon <will@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	 Catalin Marinas <catalin.marinas@arm.com>,
	Jonathan Corbet <corbet@lwn.net>,  Marc Zyngier <maz@kernel.org>,
	Oliver Upton <oliver.upton@linux.dev>,
	 Joey Gouly <joey.gouly@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	 Zenghui Yu <yuzenghui@huawei.com>,
	James Clark <james.clark@linaro.org>,
	 Anshuman Khandual <anshuman.khandual@arm.com>,
	Leo Yan <leo.yan@arm.com>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-perf-users@vger.kernel.org,  linux-kernel@vger.kernel.org,
	linux-doc@vger.kernel.org,  kvmarm@lists.linux.dev
Subject: [PATCH v20 07/11] perf: arm_pmu: Move PMUv3-specific data
Date: Tue, 18 Feb 2025 14:40:02 -0600	[thread overview]
Message-ID: <20250218-arm-brbe-v19-v20-7-4e9922fc2e8e@kernel.org> (raw)
In-Reply-To: <20250218-arm-brbe-v19-v20-0-4e9922fc2e8e@kernel.org>

From: Mark Rutland <mark.rutland@arm.com>

A few fields in struct arm_pmu are only used with PMUv3, and soon we
will need to add more for BRBE. Group the fields together so that we
have a logical place to add more data in future.

At the same time, remove the comment for reg_pmmir as it doesn't convey
anything useful.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 include/linux/perf/arm_pmu.h | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h
index 4b5b83677e3f..c70d528594f2 100644
--- a/include/linux/perf/arm_pmu.h
+++ b/include/linux/perf/arm_pmu.h
@@ -84,7 +84,6 @@ struct arm_pmu {
 	struct pmu	pmu;
 	cpumask_t	supported_cpus;
 	char		*name;
-	int		pmuver;
 	irqreturn_t	(*handle_irq)(struct arm_pmu *pmu);
 	void		(*enable)(struct perf_event *event);
 	void		(*disable)(struct perf_event *event);
@@ -102,18 +101,20 @@ struct arm_pmu {
 	int		(*map_event)(struct perf_event *event);
 	DECLARE_BITMAP(cntr_mask, ARMPMU_MAX_HWEVENTS);
 	bool		secure_access; /* 32-bit ARM only */
-#define ARMV8_PMUV3_MAX_COMMON_EVENTS		0x40
-	DECLARE_BITMAP(pmceid_bitmap, ARMV8_PMUV3_MAX_COMMON_EVENTS);
-#define ARMV8_PMUV3_EXT_COMMON_EVENT_BASE	0x4000
-	DECLARE_BITMAP(pmceid_ext_bitmap, ARMV8_PMUV3_MAX_COMMON_EVENTS);
 	struct platform_device	*plat_device;
 	struct pmu_hw_events	__percpu *hw_events;
 	struct hlist_node	node;
 	struct notifier_block	cpu_pm_nb;
 	/* the attr_groups array must be NULL-terminated */
 	const struct attribute_group *attr_groups[ARMPMU_NR_ATTR_GROUPS + 1];
-	/* store the PMMIR_EL1 to expose slots */
+
+	/* PMUv3 only */
+	int		pmuver;
 	u64		reg_pmmir;
+#define ARMV8_PMUV3_MAX_COMMON_EVENTS		0x40
+	DECLARE_BITMAP(pmceid_bitmap, ARMV8_PMUV3_MAX_COMMON_EVENTS);
+#define ARMV8_PMUV3_EXT_COMMON_EVENT_BASE	0x4000
+	DECLARE_BITMAP(pmceid_ext_bitmap, ARMV8_PMUV3_MAX_COMMON_EVENTS);
 
 	/* Only to be used by ACPI probing code */
 	unsigned long acpi_cpuid;

-- 
2.47.2


  parent reply	other threads:[~2025-02-18 20:40 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-18 20:39 [PATCH v20 00/11] arm64/perf: Enable branch stack sampling Rob Herring (Arm)
2025-02-18 20:39 ` [PATCH v20 01/11] perf: arm_pmuv3: Call kvm_vcpu_pmu_resync_el0() before enabling counters Rob Herring (Arm)
2025-02-18 20:39 ` [PATCH v20 02/11] perf: arm_pmu: Don't disable counter in armpmu_add() Rob Herring (Arm)
2025-02-18 20:39 ` [PATCH v20 03/11] perf: arm_pmuv3: Don't disable counter in armv8pmu_enable_event() Rob Herring (Arm)
2025-02-18 20:39 ` [PATCH v20 04/11] perf: arm_v7_pmu: Drop obvious comments for enabling/disabling counters and interrupts Rob Herring (Arm)
2025-02-18 20:40 ` [PATCH v20 05/11] perf: arm_v7_pmu: Don't disable counter in (armv7|krait_|scorpion_)pmu_enable_event() Rob Herring (Arm)
2025-02-18 20:40 ` [PATCH v20 06/11] perf: apple_m1: Don't disable counter in m1_pmu_enable_event() Rob Herring (Arm)
2025-02-18 20:40 ` Rob Herring (Arm) [this message]
2025-02-18 20:40 ` [PATCH v20 08/11] arm64/sysreg: Add BRBE registers and fields Rob Herring (Arm)
2025-02-18 20:40 ` [PATCH v20 09/11] arm64: Handle BRBE booting requirements Rob Herring (Arm)
2025-02-18 20:40 ` [PATCH v20 10/11] KVM: arm64: nvhe: Disable branch generation in nVHE guests Rob Herring (Arm)
2025-02-24 10:41   ` Leo Yan
2025-02-18 20:40 ` [PATCH v20 11/11] perf: arm_pmuv3: Add support for the Branch Record Buffer Extension (BRBE) Rob Herring (Arm)
2025-02-24 12:25   ` Leo Yan
2025-02-24 12:46     ` Rob Herring
2025-02-24 14:03       ` Leo Yan
2025-02-24 16:05         ` Mark Rutland
2025-02-24 18:03           ` Leo Yan
2025-02-25  1:31             ` Rob Herring
2025-02-25 12:38               ` Leo Yan
2025-02-25 15:35                 ` Rob Herring
2025-02-25 19:46                 ` Mark Rutland
2025-02-25 12:01             ` Mark Rutland
2025-02-25 17:48               ` Leo Yan
2025-02-25 19:04                 ` Rob Herring
2025-02-25 19:58                 ` Mark Rutland
2025-02-26 13:48                   ` Leo Yan
2025-02-26 14:26                     ` Rob Herring
2025-02-19 16:09 ` [PATCH v20 00/11] arm64/perf: Enable branch stack sampling James Clark
2025-03-01  7:05 ` Will Deacon
2025-03-03 16:44   ` Rob Herring
2025-03-04 11:25     ` Catalin Marinas
2025-03-04 16:25       ` Mark Rutland

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