From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7AD313BB48; Thu, 13 Nov 2025 13:39:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763041195; cv=none; b=do+Wn6kttnO/ScrdZIJ43FuSSMCESrx67voUgWs4muTxVEyCOYFp5eYNZKskzuGbAGV7MrPWRE65JKYbdBBouiUiXEx7ZGlhewszHHuUNOVssb3fjqunfIWU574JIDRgEe/ln5S0IpF6GqX5eU5oduoEZ1knV3ICUwyJHcIVHvo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763041195; c=relaxed/simple; bh=qZNTS+SsKyGq5cJUoJdNddEpiS/NdktIA7Wmi47YSI0=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: MIME-Version:Content-Type; b=iZDQ2WwUJhBTJuRiceIuRzlvJuevjRZZWnJFllJ5idAwyCaXq9r0RaJh3FNGcxozm/wKF+0HJMisFiMj1MVH7DvJZtznqC8vUW8f1vEJRllljqiBx9edPTHyGSyu1Tv6F4OC9BSeyWtnDxifuDKGEq2Hr+PY2jql7iwjxR5uxZg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=A4Jbw+/R; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="A4Jbw+/R" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 10ED7C116D0; Thu, 13 Nov 2025 13:39:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763041195; bh=qZNTS+SsKyGq5cJUoJdNddEpiS/NdktIA7Wmi47YSI0=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=A4Jbw+/R6bIUOmh0jqAwRGsgWCRKFxO621Q7LcuzoqI95D9gOWCq0i7jLqALA9eKw 3pDvyLMVjs+tFz72NZ7yrLPUVFG/dkNvZiZlOC8Wb7IBDeuXzjU4n0Db9VvRUospVJ 34PXNkYqCZEk3L8FaNtWm+nSQcd+86h6+jzaVlGG6CI3lk9T4boNvVj10y3+sxPxwI Bvtl/SJH/8JVRELMIF1VQFIs5TouKlYTVZ6fMAlmL+pWnRDNNivWbrTlBg37UEWx5z ykRTsgmqW2ZbETjDOHlxN3sDkflRjEnngr0g9Uv/wc71ZJmUkP0uJjBlr82LF1w8CV Ge8RBzRYY6BGg== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1vJXYG-00000004t5r-3WS5; Thu, 13 Nov 2025 13:39:52 +0000 Date: Thu, 13 Nov 2025 13:39:52 +0000 Message-ID: <86ldkat5jr.wl-maz@kernel.org> From: Marc Zyngier To: Jonathan Cameron Cc: , , , Thomas Gleixner , "Mark\ Rutland" , Will Deacon , "Rafael J.\ Wysocki" , Rob Herring , "Saravana\ Kannan" , Greg Kroah-Hartman , Sven Peter , Janne Grunau , Suzuki K Poulose , James Clark , Jinjie Ruan , "Alexandru\ Elisei" Subject: Re: [PATCH v4 17/26] genirq: Add request_percpu_irq_affinity() helper In-Reply-To: <20251112182735.00001363@huawei.com> References: <20251020122944.3074811-1-maz@kernel.org> <20251020122944.3074811-18-maz@kernel.org> <20251112182735.00001363@huawei.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/30.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: jonathan.cameron@huawei.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, tglx@linutronix.de, mark.rutland@arm.com, will@kernel.org, rafael@kernel.org, robh@kernel.org, saravanak@google.com, gregkh@linuxfoundation.org, sven@kernel.org, j@jannau.net, suzuki.poulose@arm.com, james.clark@linaro.org, ruanjinjie@huawei.com, alexandru.elisei@arm.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On Wed, 12 Nov 2025 18:27:35 +0000, Jonathan Cameron wrote: > > On Mon, 20 Oct 2025 13:29:34 +0100 > Marc Zyngier 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 :) I'm leaving this as an exercise for people who enjoy cross-subsystem patch series! > > > > > 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 > > Signed-off-by: Marc Zyngier > Reviewed-by: Jonathan Cameron Thanks, M. -- Without deviation from the norm, progress is not possible.