This source file includes following definitions.
- blk_mq_pci_map_queues
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5 #include <linux/kobject.h>
6 #include <linux/blkdev.h>
7 #include <linux/blk-mq.h>
8 #include <linux/blk-mq-pci.h>
9 #include <linux/pci.h>
10 #include <linux/module.h>
11
12 #include "blk-mq.h"
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26 int blk_mq_pci_map_queues(struct blk_mq_queue_map *qmap, struct pci_dev *pdev,
27 int offset)
28 {
29 const struct cpumask *mask;
30 unsigned int queue, cpu;
31
32 for (queue = 0; queue < qmap->nr_queues; queue++) {
33 mask = pci_irq_get_affinity(pdev, queue + offset);
34 if (!mask)
35 goto fallback;
36
37 for_each_cpu(cpu, mask)
38 qmap->mq_map[cpu] = qmap->queue_offset + queue;
39 }
40
41 return 0;
42
43 fallback:
44 WARN_ON_ONCE(qmap->nr_queues > 1);
45 blk_mq_clear_mq_map(qmap);
46 return 0;
47 }
48 EXPORT_SYMBOL_GPL(blk_mq_pci_map_queues);