linux-kernel - Re: [PATCH v2 20/25] coresight: trbe: Request specific affinities for percpu IRQ

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Message-ID: <5341c539-d03f-4a29-80bc-cd3deaab9a07@arm.com>
Date: Mon, 15 Sep 2025 10:37:14 +0100
From: Suzuki K Poulose <suzuki.poulose@....com>
To: Marc Zyngier <maz@...nel.org>, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-acpi@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>, Mark Rutland
 <mark.rutland@....com>, Will Deacon <will@...nel.org>,
 "Rafael J. Wysocki" <rafael@...nel.org>, Rob Herring <robh@...nel.org>,
 Saravana Kannan <saravanak@...gle.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Sven Peter
 <sven@...nel.org>, Janne Grunau <j@...nau.net>,
 James Clark <james.clark@...aro.org>
Subject: Re: [PATCH v2 20/25] coresight: trbe: Request specific affinities for
 percpu IRQ

On 15/09/2025 09:56, Marc Zyngier wrote:
> Let the TRBE driver request IRQs with an affinity mask matching
> the TRBE implementation affinity.
> 
> Signed-off-by: Marc Zyngier <maz@...nel.org>
> ---
>   drivers/hwtracing/coresight/coresight-trbe.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c
> index c512f8faa6012..4a84a6bc2e8fc 100644
> --- a/drivers/hwtracing/coresight/coresight-trbe.c
> +++ b/drivers/hwtracing/coresight/coresight-trbe.c
> @@ -1492,7 +1492,8 @@ static int arm_trbe_probe_irq(struct platform_device *pdev,
>   	if (!drvdata->handle)
>   		return -ENOMEM;
>   
> -	ret = request_percpu_irq(drvdata->irq, arm_trbe_irq_handler, DRVNAME, drvdata->handle);
> +	ret = request_percpu_irq_affinity(drvdata->irq, arm_trbe_irq_handler, DRVNAME,
> +					  affinity, drvdata->handle);
>   	if (ret) {
>   		free_percpu(drvdata->handle);
>   		return ret;

Acked-by: Suzuki K Poulose <suzuki.poulose@....com>