Re: [PATCH v4 19/26] perf: arm_spe_pmu: Request specific affinities for percpu IRQ

[Jonathan Cameron]

On Mon, 20 Oct 2025 13:29:36 +0100
Marc Zyngier <maz@xxxxxxxxxx> wrote:

> Let the SPE driver request IRQs with an affinity mask matching
> the SPE implementation affinity.
> 
> Tested-by: Will Deacon <will@xxxxxxxxxx>
> Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
Reviewed-by: Jonathan Cameron <jonathan.cameron@xxxxxxxxxx>

> ---
>  drivers/perf/arm_spe_pmu.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/perf/arm_spe_pmu.c b/drivers/perf/arm_spe_pmu.c
> index 1460b02d20e8b..87908f0712c0c 100644
> --- a/drivers/perf/arm_spe_pmu.c
> +++ b/drivers/perf/arm_spe_pmu.c
> @@ -1259,8 +1259,8 @@ static int arm_spe_pmu_dev_init(struct arm_spe_pmu *spe_pmu)
>  		return -ENXIO;
>  
>  	/* Request our PPIs (note that the IRQ is still disabled) */
> -	ret = request_percpu_irq(spe_pmu->irq, arm_spe_pmu_irq_handler, DRVNAME,
> -				 spe_pmu->handle);
> +	ret = request_percpu_irq_affinity(spe_pmu->irq, arm_spe_pmu_irq_handler,
> +					  DRVNAME, mask, spe_pmu->handle);
>  	if (ret)
>  		return ret;
>