No rdma device exposes its irq vectors affinity today. So the only
mapping that we have left, is the default blk_mq_map_queues, which
we fallback to anyways. Also fixup the only consumer of this helper
(nvme-rdma).
Remove this now dead code.
Signed-off-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
---
block/Kconfig | 5 -----
block/Makefile | 1 -
block/blk-mq-rdma.c | 44 -------------------------------------
drivers/nvme/host/rdma.c | 7 ++----
include/linux/blk-mq-rdma.h | 11 ----------
5 files changed, 2 insertions(+), 66 deletions(-)
delete mode 100644 block/blk-mq-rdma.c
delete mode 100644 include/linux/blk-mq-rdma.h
diff --git a/block/Kconfig b/block/Kconfig
index 5d9d9c84d516..0b7c13f9a089 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -215,11 +215,6 @@ config BLK_MQ_VIRTIO
depends on VIRTIO
default y
-config BLK_MQ_RDMA
- bool
- depends on INFINIBAND
- default y
-
config BLK_PM
def_bool PM
diff --git a/block/Makefile b/block/Makefile
index 4e01bb71ad6e..b31b05390749 100644
--- a/block/Makefile
+++ b/block/Makefile
@@ -30,7 +30,6 @@ obj-$(CONFIG_BLK_DEV_INTEGRITY) += bio-integrity.o blk-integrity.o
obj-$(CONFIG_BLK_DEV_INTEGRITY_T10) += t10-pi.o
obj-$(CONFIG_BLK_MQ_PCI) += blk-mq-pci.o
obj-$(CONFIG_BLK_MQ_VIRTIO) += blk-mq-virtio.o
-obj-$(CONFIG_BLK_MQ_RDMA) += blk-mq-rdma.o
obj-$(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-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);
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index bbad26b82b56..3a62867b6cab 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -12,7 +12,6 @@
#include <linux/string.h>
#include <linux/atomic.h>
#include <linux/blk-mq.h>
-#include <linux/blk-mq-rdma.h>
#include <linux/blk-integrity.h>
#include <linux/types.h>
#include <linux/list.h>
@@ -2163,10 +2162,8 @@ static void nvme_rdma_map_queues(struct blk_mq_tag_set *set)
ctrl->io_queues[HCTX_TYPE_DEFAULT];
set->map[HCTX_TYPE_READ].queue_offset = 0;
}
- blk_mq_rdma_map_queues(&set->map[HCTX_TYPE_DEFAULT],
- ctrl->device->dev, 0);
- blk_mq_rdma_map_queues(&set->map[HCTX_TYPE_READ],
- ctrl->device->dev, 0);
+ blk_mq_map_queues(&set->map[HCTX_TYPE_DEFAULT]);
+ blk_mq_map_queues(&set->map[HCTX_TYPE_READ]);
if (opts->nr_poll_queues && ctrl->io_queues[HCTX_TYPE_POLL]) {
/* map dedicated poll queues only if we have queues left */
diff --git a/include/linux/blk-mq-rdma.h b/include/linux/blk-mq-rdma.h
deleted file mode 100644
index 53b58c610e76..000000000000
--- a/include/linux/blk-mq-rdma.h
+++ /dev/null
@@ -1,11 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _LINUX_BLK_MQ_RDMA_H
-#define _LINUX_BLK_MQ_RDMA_H
-
-struct blk_mq_tag_set;
-struct ib_device;
-
-void blk_mq_rdma_map_queues(struct blk_mq_queue_map *map,
- struct ib_device *dev, int first_vec);
-
-#endif /* _LINUX_BLK_MQ_RDMA_H */
--
2.34.1
