linux-kernel - Re: [PATCH v4 17/26] genirq: Add request_percpu_irq

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Message-ID: <20251112182735.00001363@huawei.com>
Date: Wed, 12 Nov 2025 18:27:35 +0000
From: Jonathan Cameron <jonathan.cameron@...wei.com>
To: Marc Zyngier <maz@...nel.org>
CC: <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-acpi@...r.kernel.org>, 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>, Suzuki K Poulose <suzuki.poulose@....com>, James Clark
	<james.clark@...aro.org>, Jinjie Ruan <ruanjinjie@...wei.com>, "Alexandru
 Elisei" <alexandru.elisei@....com>
Subject: Re: [PATCH v4 17/26] genirq: Add request_percpu_irq_affinity()
 helper

On Mon, 20 Oct 2025 13:29:34 +0100
Marc Zyngier <maz@...nel.org> wrote:

> While it would be nice to simply make request_percpu_irq() take
> an affinity mask, the churn is likely to be on the irritating side
> given that most drivers do not give a damn about affinities.

Only 37 instances. I'd have been tempted to do it anyway :)

> 
> So take the more innocuous path to provide a helper that parallels
> request_percpu_irq(), with an affinity as a bonus argument.
> 
> Yes, request_percpu_irq_affinity() is a bit of a mouthful.
> 
> Tested-by: Will Deacon <will@...nel.org>
> Signed-off-by: Marc Zyngier <maz@...nel.org>
Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>