From 737371e839a368007758be329413b3f5ec9e7976 Mon Sep 17 00:00:00 2001 From: Daniel Wagner Date: Mon, 2 Dec 2024 15:00:16 +0100 Subject: [PATCH] blk-mq: remove unused queue mapping helpers There are no users left of the pci and virtio queue mapping helpers. Thus remove them. Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Reviewed-by: Ming Lei Reviewed-by: John Garry Signed-off-by: Daniel Wagner Link: https://lore.kernel.org/r/20241202-refactor-blk-affinity-helpers-v6-8-27211e9c2cd5@kernel.org Signed-off-by: Jens Axboe --- block/Makefile | 2 -- block/blk-mq-pci.c | 46 ----------------------------------- block/blk-mq-virtio.c | 46 ----------------------------------- include/linux/blk-mq-pci.h | 11 --------- include/linux/blk-mq-virtio.h | 11 --------- 5 files changed, 116 deletions(-) delete mode 100644 block/blk-mq-pci.c delete mode 100644 block/blk-mq-virtio.c delete mode 100644 include/linux/blk-mq-pci.h delete mode 100644 include/linux/blk-mq-virtio.h diff --git a/block/Makefile b/block/Makefile index ddfd21c1a9ff..33748123710b 100644 --- a/block/Makefile +++ b/block/Makefile @@ -27,8 +27,6 @@ bfq-y := bfq-iosched.o bfq-wf2q.o bfq-cgroup.o obj-$(CONFIG_IOSCHED_BFQ) += bfq.o obj-$(CONFIG_BLK_DEV_INTEGRITY) += bio-integrity.o blk-integrity.o t10-pi.o -obj-$(CONFIG_BLK_MQ_PCI) += blk-mq-pci.o -obj-$(CONFIG_BLK_MQ_VIRTIO) += blk-mq-virtio.o obj-$(CONFIG_BLK_DEV_ZONED) += blk-zoned.o obj-$(CONFIG_BLK_WBT) += blk-wbt.o obj-$(CONFIG_BLK_DEBUG_FS) += blk-mq-debugfs.o diff --git a/block/blk-mq-pci.c b/block/blk-mq-pci.c deleted file mode 100644 index d47b5c73c9eb..000000000000 --- a/block/blk-mq-pci.c +++ /dev/null @@ -1,46 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (c) 2016 Christoph Hellwig. - */ -#include -#include -#include -#include -#include - -#include "blk-mq.h" - -/** - * blk_mq_pci_map_queues - provide a default queue mapping for PCI device - * @qmap: CPU to hardware queue map. - * @pdev: PCI device associated with @set. - * @offset: Offset to use for the pci irq vector - * - * This function assumes the PCI device @pdev has at least as many available - * interrupt vectors as @set has queues. It will then query the vector - * corresponding to each queue for it's affinity mask and built queue mapping - * that maps a queue to the CPUs that have irq affinity for the corresponding - * vector. - */ -void blk_mq_pci_map_queues(struct blk_mq_queue_map *qmap, struct pci_dev *pdev, - int offset) -{ - const struct cpumask *mask; - unsigned int queue, cpu; - - for (queue = 0; queue < qmap->nr_queues; queue++) { - mask = pci_irq_get_affinity(pdev, queue + offset); - if (!mask) - goto fallback; - - for_each_cpu(cpu, mask) - qmap->mq_map[cpu] = qmap->queue_offset + queue; - } - - return; - -fallback: - WARN_ON_ONCE(qmap->nr_queues > 1); - blk_mq_clear_mq_map(qmap); -} -EXPORT_SYMBOL_GPL(blk_mq_pci_map_queues); diff --git a/block/blk-mq-virtio.c b/block/blk-mq-virtio.c deleted file mode 100644 index 68d0945c0b08..000000000000 --- a/block/blk-mq-virtio.c +++ /dev/null @@ -1,46 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (c) 2016 Christoph Hellwig. - */ -#include -#include -#include -#include -#include "blk-mq.h" - -/** - * blk_mq_virtio_map_queues - provide a default queue mapping for virtio device - * @qmap: CPU to hardware queue map. - * @vdev: virtio device to provide a mapping for. - * @first_vec: first interrupt vectors to use for queues (usually 0) - * - * This function assumes the virtio device @vdev has at least as many available - * interrupt vectors as @set has queues. It will then query the vector - * corresponding to each queue for it's affinity mask and built queue mapping - * that maps a queue to the CPUs that have irq affinity for the corresponding - * vector. - */ -void blk_mq_virtio_map_queues(struct blk_mq_queue_map *qmap, - struct virtio_device *vdev, int first_vec) -{ - const struct cpumask *mask; - unsigned int queue, cpu; - - if (!vdev->config->get_vq_affinity) - goto fallback; - - for (queue = 0; queue < qmap->nr_queues; queue++) { - mask = vdev->config->get_vq_affinity(vdev, first_vec + queue); - if (!mask) - goto fallback; - - for_each_cpu(cpu, mask) - qmap->mq_map[cpu] = qmap->queue_offset + queue; - } - - return; - -fallback: - blk_mq_map_queues(qmap); -} -EXPORT_SYMBOL_GPL(blk_mq_virtio_map_queues); diff --git a/include/linux/blk-mq-pci.h b/include/linux/blk-mq-pci.h deleted file mode 100644 index ca544e1d3508..000000000000 --- a/include/linux/blk-mq-pci.h +++ /dev/null @@ -1,11 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _LINUX_BLK_MQ_PCI_H -#define _LINUX_BLK_MQ_PCI_H - -struct blk_mq_queue_map; -struct pci_dev; - -void blk_mq_pci_map_queues(struct blk_mq_queue_map *qmap, struct pci_dev *pdev, - int offset); - -#endif /* _LINUX_BLK_MQ_PCI_H */ diff --git a/include/linux/blk-mq-virtio.h b/include/linux/blk-mq-virtio.h deleted file mode 100644 index 13226e9b22dd..000000000000 --- a/include/linux/blk-mq-virtio.h +++ /dev/null @@ -1,11 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _LINUX_BLK_MQ_VIRTIO_H -#define _LINUX_BLK_MQ_VIRTIO_H - -struct blk_mq_queue_map; -struct virtio_device; - -void blk_mq_virtio_map_queues(struct blk_mq_queue_map *qmap, - struct virtio_device *vdev, int first_vec); - -#endif /* _LINUX_BLK_MQ_VIRTIO_H */