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perf: arm_pmu: Convert to the new interrupt affinity retrieval API 

Now that the relevant interrupt controllers are equipped with a callback
returning the affinity of per-CPU interrupts, switch the OF side of the ARM
PMU driver over to this new method.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Will Deacon <will@kernel.org>
Reviewed-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://patch.msgid.link/20251020122944.3074811-9-maz@kernel.org
This commit is contained in:
Marc Zyngier 2025-10-20 13:29:25 +01:00 committed by Thomas Gleixner
parent 541454dd20
commit 663783e001
1 changed files with 9 additions and 7 deletions
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16
drivers/perf/arm_pmu_platform.c
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@ -42,14 +42,13 @@ static int probe_current_pmu(struct arm_pmu *pmu,
return ret; return ret;
} }
static int pmu_parse_percpu_irq(struct arm_pmu *pmu, int irq) static int pmu_parse_percpu_irq(struct arm_pmu *pmu, int irq,
const struct cpumask *affinity)
{ {
int cpu, ret;
struct pmu_hw_events __percpu *hw_events = pmu->hw_events; struct pmu_hw_events __percpu *hw_events = pmu->hw_events;
int cpu;
ret = irq_get_percpu_devid_partition(irq, &pmu->supported_cpus); cpumask_copy(&pmu->supported_cpus, affinity);
if (ret)
return ret;
for_each_cpu(cpu, &pmu->supported_cpus) for_each_cpu(cpu, &pmu->supported_cpus)
per_cpu(hw_events->irq, cpu) = irq; per_cpu(hw_events->irq, cpu) = irq;
@ -115,9 +114,12 @@ static int pmu_parse_irqs(struct arm_pmu *pmu)
} }
if (num_irqs == 1) { if (num_irqs == 1) {
int irq = platform_get_irq(pdev, 0); const struct cpumask *affinity;
int irq;
irq = platform_get_irq_affinity(pdev, 0, &affinity);
if ((irq > 0) && irq_is_percpu_devid(irq)) if ((irq > 0) && irq_is_percpu_devid(irq))
return pmu_parse_percpu_irq(pmu, irq); return pmu_parse_percpu_irq(pmu, irq, affinity);
} }
if (nr_cpu_ids != 1 && !pmu_has_irq_affinity(dev->of_node)) if (nr_cpu_ids != 1 && !pmu_has_irq_affinity(dev->of_node))