Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932461AbcKIBQC (ORCPT ); Tue, 8 Nov 2016 20:16:02 -0500 Received: from bombadil.infradead.org ([198.137.202.9]:50799 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752346AbcKIBPn (ORCPT ); Tue, 8 Nov 2016 20:15:43 -0500 From: Christoph Hellwig To: tglx@linutronix.de Cc: axboe@kernel.dk, linux-block@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 7/7] blk-mq: add a first_vec argument to blk_mq_pci_map_queues Date: Tue, 8 Nov 2016 17:15:07 -0800 Message-Id: <1478654107-7384-8-git-send-email-hch@lst.de> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1478654107-7384-1-git-send-email-hch@lst.de> References: <1478654107-7384-1-git-send-email-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2354 Lines: 68 This allows skipping the first N IRQ vectors in case they are used for control or admin interrupts. Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Reviewed-by: Johannes Thumshirn --- block/blk-mq-pci.c | 6 ++++-- drivers/nvme/host/pci.c | 2 +- include/linux/blk-mq-pci.h | 3 ++- 3 files changed, 7 insertions(+), 4 deletions(-) diff --git a/block/blk-mq-pci.c b/block/blk-mq-pci.c index 966c216..03ff7c4 100644 --- a/block/blk-mq-pci.c +++ b/block/blk-mq-pci.c @@ -21,6 +21,7 @@ * blk_mq_pci_map_queues - provide a default queue mapping for PCI device * @set: tagset to provide the mapping for * @pdev: PCI device associated with @set. + * @first_vec: first interrupt vectors to use for queues (usually 0) * * This function assumes the PCI device @pdev has at least as many available * interrupt vetors as @set has queues. It will then queuery the vector @@ -28,12 +29,13 @@ * that maps a queue to the CPUs that have irq affinity for the corresponding * vector. */ -int blk_mq_pci_map_queues(struct blk_mq_tag_set *set, struct pci_dev *pdev) +int blk_mq_pci_map_queues(struct blk_mq_tag_set *set, struct pci_dev *pdev, + int first_vec) { const struct cpumask *mask; unsigned int queue, cpu; - for (queue = 0; queue < set->nr_hw_queues; queue++) { + for (queue = first_vec; queue < set->nr_hw_queues; queue++) { mask = pci_irq_get_affinity(pdev, queue); if (!mask) return -EINVAL; diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 0248d0e..6e6b917 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -273,7 +273,7 @@ static int nvme_pci_map_queues(struct blk_mq_tag_set *set) { struct nvme_dev *dev = set->driver_data; - return blk_mq_pci_map_queues(set, to_pci_dev(dev->dev)); + return blk_mq_pci_map_queues(set, to_pci_dev(dev->dev), 0); } /** diff --git a/include/linux/blk-mq-pci.h b/include/linux/blk-mq-pci.h index 6ab5952..fde26d2 100644 --- a/include/linux/blk-mq-pci.h +++ b/include/linux/blk-mq-pci.h @@ -4,6 +4,7 @@ struct blk_mq_tag_set; struct pci_dev; -int blk_mq_pci_map_queues(struct blk_mq_tag_set *set, struct pci_dev *pdev); +int blk_mq_pci_map_queues(struct blk_mq_tag_set *set, struct pci_dev *pdev, + int first_vec); #endif /* _LINUX_BLK_MQ_PCI_H */ -- 2.1.4