linux/block/blk-mq-pci.c

// 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)
{ … }
EXPORT_SYMBOL_GPL(…);