nvme: add a numa_node field to struct nvme_ctrl

Instead of directly poking into the struct device add a new numa_node
field to struct nvme_ctrl.  This allows fabrics drivers where ctrl->dev
is a virtual device to support NUMA affinity as well.

Also expose the field as a sysfs attribute, and populate it for the
RDMA and FC transports.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 5c4f940..e57c673 100644 (file)
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2766,6 +2766,7 @@ static ssize_t  field##_show(struct device *dev,                          \
 static DEVICE_ATTR(field, S_IRUGO, field##_show, NULL);
 
 nvme_show_int_function(cntlid);
+nvme_show_int_function(numa_node);
 
 static ssize_t nvme_sysfs_delete(struct device *dev,
                                struct device_attribute *attr, const char *buf,
@@ -2845,6 +2846,7 @@ static struct attribute *nvme_dev_attrs[] = {
        &dev_attr_subsysnqn.attr,
        &dev_attr_address.attr,
        &dev_attr_state.attr,
+       &dev_attr_numa_node.attr,
        NULL
 };
 
@@ -3055,7 +3057,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
        struct gendisk *disk;
        struct nvme_id_ns *id;
        char disk_name[DISK_NAME_LEN];
-       int node = dev_to_node(ctrl->dev), flags = GENHD_FL_EXT_DEVT;
+       int node = ctrl->numa_node, flags = GENHD_FL_EXT_DEVT;
 
        ns = kzalloc_node(sizeof(*ns), GFP_KERNEL, node);
        if (!ns)

diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index e6994e4..b79e419 100644 (file)
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -2425,7 +2425,7 @@ nvme_fc_create_io_queues(struct nvme_fc_ctrl *ctrl)
        ctrl->tag_set.ops = &nvme_fc_mq_ops;
        ctrl->tag_set.queue_depth = ctrl->ctrl.opts->queue_size;
        ctrl->tag_set.reserved_tags = 1; /* fabric connect */
-       ctrl->tag_set.numa_node = NUMA_NO_NODE;
+       ctrl->tag_set.numa_node = ctrl->ctrl.numa_node;
        ctrl->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
        ctrl->tag_set.cmd_size =
                struct_size((struct nvme_fcp_op_w_sgl *)NULL, priv,
@@ -3018,6 +3018,7 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
 
        ctrl->ctrl.opts = opts;
        ctrl->ctrl.nr_reconnects = 0;
+       ctrl->ctrl.numa_node = dev_to_node(lport->dev);
        INIT_LIST_HEAD(&ctrl->ctrl_list);
        ctrl->lport = lport;
        ctrl->rport = rport;
@@ -3058,7 +3059,7 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
        ctrl->admin_tag_set.ops = &nvme_fc_admin_mq_ops;
        ctrl->admin_tag_set.queue_depth = NVME_AQ_MQ_TAG_DEPTH;
        ctrl->admin_tag_set.reserved_tags = 2; /* fabric connect + Keep-Alive */
-       ctrl->admin_tag_set.numa_node = NUMA_NO_NODE;
+       ctrl->admin_tag_set.numa_node = ctrl->ctrl.numa_node;
        ctrl->admin_tag_set.cmd_size =
                struct_size((struct nvme_fcp_op_w_sgl *)NULL, priv,
                            ctrl->lport->ops->fcprqst_priv_sz);

diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index ec310b1..183ec17 100644 (file)
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -141,7 +141,7 @@ static struct nvme_ns *__nvme_find_path(struct nvme_ns_head *head, int node)
                    test_bit(NVME_NS_ANA_PENDING, &ns->flags))
                        continue;
 
-               distance = node_distance(node, dev_to_node(ns->ctrl->dev));
+               distance = node_distance(node, ns->ctrl->numa_node);
 
                switch (ns->ana_state) {
                case NVME_ANA_OPTIMIZED:
@@ -261,7 +261,7 @@ int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl, struct nvme_ns_head *head)
        if (!(ctrl->subsys->cmic & (1 << 1)) || !multipath)
                return 0;
 
-       q = blk_alloc_queue_node(GFP_KERNEL, NUMA_NO_NODE);
+       q = blk_alloc_queue_node(GFP_KERNEL, ctrl->numa_node);
        if (!q)
                goto out;
        q->queuedata = head;

diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index ae77eb1..f1e4566 100644 (file)
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -153,6 +153,7 @@ struct nvme_ctrl {
        struct request_queue *connect_q;
        struct device *dev;
        int instance;
+       int numa_node;
        struct blk_mq_tag_set *tagset;
        struct blk_mq_tag_set *admin_tagset;
        struct list_head namespaces;

diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 75c01d2..f2db848 100644 (file)
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -694,7 +694,7 @@ static struct blk_mq_tag_set *nvme_rdma_alloc_tagset(struct nvme_ctrl *nctrl,
                set->ops = &nvme_rdma_admin_mq_ops;
                set->queue_depth = NVME_AQ_MQ_TAG_DEPTH;
                set->reserved_tags = 2; /* connect + keep-alive */
-               set->numa_node = NUMA_NO_NODE;
+               set->numa_node = nctrl->numa_node;
                set->cmd_size = sizeof(struct nvme_rdma_request) +
                        SG_CHUNK_SIZE * sizeof(struct scatterlist);
                set->driver_data = ctrl;
@@ -707,7 +707,7 @@ static struct blk_mq_tag_set *nvme_rdma_alloc_tagset(struct nvme_ctrl *nctrl,
                set->ops = &nvme_rdma_mq_ops;
                set->queue_depth = nctrl->sqsize + 1;
                set->reserved_tags = 1; /* fabric connect */
-               set->numa_node = NUMA_NO_NODE;
+               set->numa_node = nctrl->numa_node;
                set->flags = BLK_MQ_F_SHOULD_MERGE;
                set->cmd_size = sizeof(struct nvme_rdma_request) +
                        SG_CHUNK_SIZE * sizeof(struct scatterlist);
@@ -763,6 +763,7 @@ static int nvme_rdma_configure_admin_queue(struct nvme_rdma_ctrl *ctrl,
                return error;
 
        ctrl->device = ctrl->queues[0].device;
+       ctrl->ctrl.numa_node = dev_to_node(ctrl->device->dev->dma_device);
 
        ctrl->max_fr_pages = nvme_rdma_get_max_fr_pages(ctrl->device->dev);