From patchwork Mon Dec 2 14:00:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Wagner X-Patchwork-Id: 13890741 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 13EBB202F99; Mon, 2 Dec 2024 14:00:34 +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=1733148036; cv=none; b=QyNZEP2ltNVIVv3aKZxRzdfm+f21R2d/hEmmtcZYHQAhnd7kAqAgtq2skiuxW9K3WoT6n0kWgKP4Px/IRdmCe3Dend8w+Gr4cs/sKJRqo3sGZ2OBFIfecFT87h9iwUcuk4ihQK4neVC1drVnX2Hj+k/IHwZ/OVo2SazRr6HAH7E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733148036; c=relaxed/simple; bh=5fZ7EXrytyCpiro/tG84vBDeaW3vHOORuXZTueXikB4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Mav9nJS1BovBWi7wiSKeWxvwMObNootxFOTeSChgjHV8Yi5sr4hiGgVd2yim2jN7/QM9J6L5FO/iRaSawKqcXM5Du33GvTB6md94lq4BCXG/vdldhWF+Vv75/zvJa8b1Ew0w5N2YE0N5LQXMl+KnWx0+vuqyzsrgTKNdzaWw8xM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bvqUQ/VS; 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="bvqUQ/VS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 46828C4CED6; Mon, 2 Dec 2024 14:00:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733148034; bh=5fZ7EXrytyCpiro/tG84vBDeaW3vHOORuXZTueXikB4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=bvqUQ/VS7hBSvNuY72vN7+D0BNoN1TYVsmReR+ugpZ4Mdb0jYb0ej/7yV7eOIyCOz 2vyGFHAq0Cp/KXp1N9aqU3fXXWqskEoP38lTPnAdwSbbjcXqNphjqbl8r453fSPfOn 2DSrFBiob05SZceAGX5gsWZYN8itXF0LNXYrt6kEwu/nezlxS4kiauOD1E4Rth0y5t WO91U46MtvVHWmKMzWBfIUz4tXR2CzppISi5iWHYCQyc4tq26wsRcWAbXCWt3HA1hI 7mgyXBzHAmrZLF1iDjC50pvxQUvECe77FVv3jVC+Ag3fE0gvIDmMUEJkna7eFzV+NC dZnqbKSfrQg/Q== From: Daniel Wagner Date: Mon, 02 Dec 2024 15:00:11 +0100 Subject: [PATCH v6 3/8] virtio: hookup irq_get_affinity callback Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241202-refactor-blk-affinity-helpers-v6-3-27211e9c2cd5@kernel.org> References: <20241202-refactor-blk-affinity-helpers-v6-0-27211e9c2cd5@kernel.org> In-Reply-To: <20241202-refactor-blk-affinity-helpers-v6-0-27211e9c2cd5@kernel.org> To: Jens Axboe , Bjorn Helgaas , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , "Martin K. Petersen" , Keith Busch , Christoph Hellwig , Sagi Grimberg , John Garry , Greg Kroah-Hartman , Hannes Reinecke , Ming Lei Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, virtualization@lists.linux.dev, linux-scsi@vger.kernel.org, megaraidlinux.pdl@broadcom.com, mpi3mr-linuxdrv.pdl@broadcom.com, MPT-FusionLinux.pdl@broadcom.com, storagedev@microchip.com, linux-nvme@lists.infradead.org, Daniel Wagner X-Mailer: b4 0.14.2 struct bus_type has a new callback for retrieving the IRQ affinity for a device. Hook this callback up for virtio based devices. Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Reviewed-by: Ming Lei Reviewed-by: John Garry Signed-off-by: Daniel Wagner --- drivers/virtio/virtio.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index b9095751e43bb7db5fc991b0cc0979d2e86f7b9b..b10ed9f5b5435ae0bf7ab52a6519a7fdc4d5920d 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -377,6 +377,24 @@ static void virtio_dev_remove(struct device *_d) of_node_put(dev->dev.of_node); } +/* + * virtio_irq_get_affinity - get IRQ affinity mask for device + * @_d: ptr to dev structure + * @irq_vec: interrupt vector number + * + * Return the CPU affinity mask for @_d and @irq_vec. + */ +static const struct cpumask *virtio_irq_get_affinity(struct device *_d, + unsigned int irq_vec) +{ + struct virtio_device *dev = dev_to_virtio(_d); + + if (!dev->config->get_vq_affinity) + return NULL; + + return dev->config->get_vq_affinity(dev, irq_vec); +} + static const struct bus_type virtio_bus = { .name = "virtio", .match = virtio_dev_match, @@ -384,6 +402,7 @@ static const struct bus_type virtio_bus = { .uevent = virtio_uevent, .probe = virtio_dev_probe, .remove = virtio_dev_remove, + .irq_get_affinity = virtio_irq_get_affinity, }; int __register_virtio_driver(struct virtio_driver *driver, struct module *owner)