From nobody Thu Oct 2 06:29:56 2025 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 D046C2FDC25; Mon, 22 Sep 2025 08:28:44 +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=1758529724; cv=none; b=MoSnxr0q71b6koJUWotV1XRH/E6TLCJ5eMS5MRPwgX9oXanJgmeShw7DN7c3VhN8JxBh85LdGpCeE0mOll/KkWQ6edd8aFsAx1RRA6VsDI59FN+v3PH+9ddRB78jBr6Lj8Uy5QIa3Mqe13335EBPiJgZhPaZB0JcOb6gF57tZb8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758529724; c=relaxed/simple; bh=+tEFpiH2SyGne7krnANKnL8umntjFTGvzqHPthyUCxA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Itk3Y29McpbSiWYFu5uIjFgWKbwsHd2PTHHRjRpZALiH5Y8pk1ZPQ/Vlsyutfut7B+1l0JdPUmthQ3NUpNA8m/o+dQPtN+kqRka4FgPSTeSrAQ/SSecUOpMLCIOCJXT5mRNH7b3c3YTqJV8k4E4Tv7v6SFW5qQpQ66oVqexXTWs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tu0OU75t; 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="tu0OU75t" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 891C5C4CEF5; Mon, 22 Sep 2025 08:28:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758529724; bh=+tEFpiH2SyGne7krnANKnL8umntjFTGvzqHPthyUCxA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tu0OU75tau4SKPk+JYe4VzWArSZkTHxkUvjl5cOPg9X0Mn1/Iy+Wyd+Ht7kWDUO5a A5KItxZjEOHVQ0FYI+z4Z/tp7K+bqFD4DrM6OasYoo4a0lufpgjD4TaWax4p67qatd 7cUrZccwf4LNW5jOiAupqIaOBMD4GbYh8b8eNPM7w9tUK3VKPxmHiD1uatrt6+CPVE bUipL0V0EoARbGS5hZTRAqIG4VairOQxOTPiAWYuXGZjX7Ha+Bvego+ZAxAU9FRdCJ Rv9M0n7KY5Yqt6DXyB0m5Y+XLauSY9GVS8kvqoK9CaNLGdqCObsJhpGbYeZ7L12LuR fZ+qSOOAs2pPQ== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) 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 1v0buc-00000008Kds-29qc; Mon, 22 Sep 2025 08:28:42 +0000 From: Marc Zyngier To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org 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 , Jonathan Cameron Subject: [PATCH v3 03/26] of/irq: Add IRQ affinity reporting interface Date: Mon, 22 Sep 2025 09:28:10 +0100 Message-ID: <20250922082833.2038905-4-maz@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20250922082833.2038905-1-maz@kernel.org> References: <20250922082833.2038905-1-maz@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: 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, jonathan.cameron@huawei.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Content-Type: text/plain; charset="utf-8" Plug the irq_populate_fwspec_info() helper into the OF layer to offer an IRQ affinity reporting function. Signed-off-by: Marc Zyngier --- drivers/of/irq.c | 20 ++++++++++++++++++++ include/linux/of_irq.h | 7 +++++++ 2 files changed, 27 insertions(+) diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 74aaea61de13c..9a205cb033bda 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -479,6 +479,26 @@ int of_irq_get(struct device_node *dev, int index) } EXPORT_SYMBOL_GPL(of_irq_get); =20 +const struct cpumask *of_irq_get_affinity(struct device_node *dev, int ind= ex) +{ + struct of_phandle_args oirq; + struct irq_fwspec_info info; + struct irq_fwspec fwspec; + int rc; + + rc =3D of_irq_parse_one(dev, index, &oirq); + if (rc) + return NULL; + + of_phandle_args_to_fwspec(oirq.np, oirq.args, oirq.args_count, + &fwspec); + + if (!irq_populate_fwspec_info(&fwspec, &info)) + return info.affinity; + + return NULL; +} + /** * of_irq_get_byname - Decode a node's IRQ and return it as a Linux IRQ nu= mber * @dev: pointer to device tree node diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index a480063c9cb19..721cbdbc292df 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -43,6 +43,8 @@ extern int of_irq_parse_one(struct device_node *device, i= nt index, struct of_phandle_args *out_irq); extern int of_irq_count(struct device_node *dev); extern int of_irq_get(struct device_node *dev, int index); +extern const struct cpumask *of_irq_get_affinity(struct device_node *dev, + int index); extern int of_irq_get_byname(struct device_node *dev, const char *name); extern int of_irq_to_resource_table(struct device_node *dev, struct resource *res, int nr_irqs); @@ -77,6 +79,11 @@ static inline int of_irq_get_byname(struct device_node *= dev, const char *name) { return 0; } +static inline const struct cpumask *of_irq_get_affinity(struct device_node= *dev, + int index) +{ + return NULL; +} static inline int of_irq_to_resource_table(struct device_node *dev, struct resource *res, int nr_irqs) { --=20 2.47.3