diff options
Diffstat (limited to 'block/blk-mq-pci.c')
| -rw-r--r-- | block/blk-mq-pci.c | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/block/blk-mq-pci.c b/block/blk-mq-pci.c deleted file mode 100644 index 0c3354cf3552..000000000000 --- a/block/blk-mq-pci.c +++ /dev/null @@ -1,47 +0,0 @@ -/* - * Copyright (c) 2016 Christoph Hellwig. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - */ -#include <linux/kobject.h> -#include <linux/blkdev.h> -#include <linux/blk-mq.h> -#include <linux/blk-mq-pci.h> -#include <linux/pci.h> -#include <linux/module.h> - -/** - * 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. - * - * 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. - */ -int blk_mq_pci_map_queues(struct blk_mq_tag_set *set, struct pci_dev *pdev) -{ - const struct cpumask *mask; - unsigned int queue, cpu; - - for (queue = 0; queue < set->nr_hw_queues; queue++) { - mask = pci_irq_get_affinity(pdev, queue); - if (!mask) - return -EINVAL; - - for_each_cpu(cpu, mask) - set->mq_map[cpu] = queue; - } - - return 0; -} -EXPORT_SYMBOL_GPL(blk_mq_pci_map_queues); |