diff options
Diffstat (limited to 'block/blk-mq-rdma.c')
-rw-r--r-- | block/blk-mq-rdma.c | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/block/blk-mq-rdma.c b/block/blk-mq-rdma.c deleted file mode 100644 index 29c1f4d6eb04..000000000000 --- a/block/blk-mq-rdma.c +++ /dev/null @@ -1,44 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (c) 2017 Sagi Grimberg. - */ -#include <linux/blk-mq.h> -#include <linux/blk-mq-rdma.h> -#include <rdma/ib_verbs.h> - -/** - * blk_mq_rdma_map_queues - provide a default queue mapping for rdma device - * @map: CPU to hardware queue map. - * @dev: rdma device to provide a mapping for. - * @first_vec: first interrupt vectors to use for queues (usually 0) - * - * This function assumes the rdma device @dev has at least as many available - * interrupt vetors as @set has queues. It will then query it's affinity mask - * and built queue mapping that maps a queue to the CPUs that have irq affinity - * for the corresponding vector. - * - * In case either the driver passed a @dev with less vectors than - * @set->nr_hw_queues, or @dev does not provide an affinity mask for a - * vector, we fallback to the naive mapping. - */ -void blk_mq_rdma_map_queues(struct blk_mq_queue_map *map, - struct ib_device *dev, int first_vec) -{ - const struct cpumask *mask; - unsigned int queue, cpu; - - for (queue = 0; queue < map->nr_queues; queue++) { - mask = ib_get_vector_affinity(dev, first_vec + queue); - if (!mask) - goto fallback; - - for_each_cpu(cpu, mask) - map->mq_map[cpu] = map->queue_offset + queue; - } - - return; - -fallback: - blk_mq_map_queues(map); -} -EXPORT_SYMBOL_GPL(blk_mq_rdma_map_queues); |