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Message-Id: <20241202-refactor-blk-affinity-helpers-v6-8-27211e9c2cd5@kernel.org>
Date: Mon, 02 Dec 2024 15:00:16 +0100
From: Daniel Wagner <wagi@...nel.org>
To: Jens Axboe <axboe@...nel.dk>, Bjorn Helgaas <bhelgaas@...gle.com>,
"Michael S. Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>,
Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
Eugenio Pérez <eperezma@...hat.com>,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Keith Busch <kbusch@...nel.org>, Christoph Hellwig <hch@....de>,
Sagi Grimberg <sagi@...mberg.me>, John Garry <john.g.garry@...cle.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Hannes Reinecke <hare@...e.de>, Ming Lei <ming.lei@...hat.com>
Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-pci@...r.kernel.org, virtualization@...ts.linux.dev,
linux-scsi@...r.kernel.org, megaraidlinux.pdl@...adcom.com,
mpi3mr-linuxdrv.pdl@...adcom.com, MPT-FusionLinux.pdl@...adcom.com,
storagedev@...rochip.com, linux-nvme@...ts.infradead.org,
Daniel Wagner <wagi@...nel.org>
Subject: [PATCH v6 8/8] 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 <hch@....de>
Reviewed-by: Hannes Reinecke <hare@...e.de>
Reviewed-by: Ming Lei <ming.lei@...hat.com>
Reviewed-by: John Garry <john.g.garry@...cle.com>
Signed-off-by: Daniel Wagner <wagi@...nel.org>
---
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(-)
diff --git a/block/Makefile b/block/Makefile
index ddfd21c1a9ffc9c4f49efca9875bd8a1cbf81e4d..33748123710b368a1a3a7b099bbd90d27b24c69b 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 d47b5c73c9eb715be7627a2952ad0ef921dd5bc6..0000000000000000000000000000000000000000
--- a/block/blk-mq-pci.c
+++ /dev/null
@@ -1,46 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (c) 2016 Christoph Hellwig.
- */
-#include <linux/kobject.h>
-#include <linux/blkdev.h>
-#include <linux/blk-mq-pci.h>
-#include <linux/pci.h>
-#include <linux/module.h>
-
-#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 68d0945c0b08a2be116125f46c3a56fcdb02aea8..0000000000000000000000000000000000000000
--- a/block/blk-mq-virtio.c
+++ /dev/null
@@ -1,46 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (c) 2016 Christoph Hellwig.
- */
-#include <linux/device.h>
-#include <linux/blk-mq-virtio.h>
-#include <linux/virtio_config.h>
-#include <linux/module.h>
-#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 ca544e1d3508f34ab6e198b0bb17efe88de4d14d..0000000000000000000000000000000000000000
--- 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 13226e9b22dd53e4289d506d49c52671de036ee8..0000000000000000000000000000000000000000
--- 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 */
--
2.47.0
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