Re: [PATCH v3 09/26] perf: arm_spe_pmu: Convert to new IRQ affinity retrieval API

Jinjie Ruan
2025-10-10T03:41:26Z

On 2025/9/22 16:28, Marc Zyngier wrote:
> Now that the relevant interrupt controllers are equipped with
> a callback returning the affinity of per-CPU interrupts, switch
> the ARM SPE driver over to this new method.
>
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> ---
> drivers/perf/arm_spe_pmu.c | 9 ++++-----
> 1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/perf/arm_spe_pmu.c b/drivers/perf/arm_spe_pmu.c
> index 369e77ad5f13f..a1c86a1f21427 100644
> --- a/drivers/perf/arm_spe_pmu.c
> +++ b/drivers/perf/arm_spe_pmu.c
> @@ -1211,8 +1211,10 @@ static void arm_spe_pmu_dev_teardown(struct arm_spe_pmu *spe_pmu)
> static int arm_spe_pmu_irq_probe(struct arm_spe_pmu *spe_pmu)
> {
> struct platform_device *pdev = spe_pmu->pdev;
> - int irq = platform_get_irq(pdev, 0);
> + const struct cpumask *affinity;
> + int irq;
>
> + irq = platform_get_irq_affinity(pdev, 0, &affinity);
> if (irq < 0)
> return -ENXIO;
>
> @@ -1221,10 +1223,7 @@ static int arm_spe_pmu_irq_probe(struct arm_spe_pmu *spe_pmu)
> return -EINVAL;
> }
>
> - if (irq_get_percpu_devid_partition(irq, &spe_pmu->supported_cpus)) {
> - dev_err(&pdev->dev, "failed to get PPI partition (%d)\n", irq);
> - return -EINVAL;
> - }
> + cpumask_copy(&spe_pmu->supported_cpus, affinity);

Reviewed-by: Jinjie Ruan <ruanjinjie@huawei.com>

>
> spe_pmu->irq = irq;
> return 0;