From patchwork Tue Nov 12 13:26:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Wagner X-Patchwork-Id: 843440 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 DE0C01632EE; Tue, 12 Nov 2024 13:26:41 +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=1731418002; cv=none; b=pIhDcr3SycIvzSk/ArgOESQOlYml+ofi01t7oAK3F5ldOPGdQ6SUzSjpZkIzIgeUEDDXaucUNW7qgSvEw0bOBWbCOMfay94U04O+pqs1C8OEvI0fgM0o3WtsQ+Jki2vTZrFI5yBfzDqvDa3SpddhVtEOSsgKP3FxO8XUr4SPn2U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731418002; c=relaxed/simple; bh=WzzdcfvW/fxEt9HmIi8FFjH8HF/HHHnW11D3o4S59RY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=KAayAYjzC7PTf9AX0rI+MrL3zlsUPmXZWhb8LFbkqgwU8WpmCkQQGg9+2qzTjLIreaN04wG6KocEPvB5w/xuS4pWBFFtB2lI3Q0LNVBBpB+mQWKb0ysJVOuvwXz0kt5aMhi5dxCTdzzKPGOMjwKDDHNyfSovBfq2wEPOwe/V264= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=o2MuZjka; 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="o2MuZjka" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 36F24C4CEDA; Tue, 12 Nov 2024 13:26:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1731418001; bh=WzzdcfvW/fxEt9HmIi8FFjH8HF/HHHnW11D3o4S59RY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=o2MuZjkaF69JbVoKSJRODwxcWDuZ7Of09DKzNyycoFpo6ok7x6GbhDhHUHWoVjuMV SggGGc8hgHPgF8b7nCIPC1oAElQHtAL6HxOpm25vhHRBk3dcwHLgF8S+gb4kXnLYzw eE3tinRurbLW40itCmvskntngcX/y4x+iGvKhMXlHawS1OXO0is01KSaFI+I7NkXwc nzAfM/rEpaWZjzeECqdJ3vt2qnAV3H1P41E+D61FLOOimJPdCZy0xwE+7nEZIJqw8+ RnlxW9PDZLq4pM6BMf6eFmEBKmqwYHo2LHHeViPDOmJNPHhPhciL4yhkwy6fqZOlDh uRMpKBRnD+7Gw== From: Daniel Wagner Date: Tue, 12 Nov 2024 14:26:18 +0100 Subject: [PATCH v3 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: <20241112-refactor-blk-affinity-helpers-v3-3-573bfca0cbd8@kernel.org> References: <20241112-refactor-blk-affinity-helpers-v3-0-573bfca0cbd8@kernel.org> In-Reply-To: <20241112-refactor-blk-affinity-helpers-v3-0-573bfca0cbd8@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 , Greg Kroah-Hartman 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. 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..7774aecdfe52d4dce11eb77e43864981a2e2b2bb 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_veq) +{ + struct virtio_device *dev = dev_to_virtio(_d); + + if (!dev->config->get_vq_affinity) + return NULL; + + return dev->config->get_vq_affinity(dev, irq_veq); +} + 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)