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perf: arm_pmu: Move PMUv3-specific data

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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>
Tested-by: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20250218-arm-brbe-v19-v20-7-4e9922fc2e8e@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Mark Rutland 2025-02-18 14:40:02 -06:00 committed by Will Deacon
parent c2e793da59
commit dc4d58a752
1 changed files with 7 additions and 6 deletions
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13
include/linux/perf/arm_pmu.h
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@ -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;