hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

nvme-rdma: rework queue maps handling 

If the device supports less queues than provided (if the device has less
completion vectors), we might hit a bug due to the fact that we ignore
that in nvme_rdma_map_queues (we override the maps nr_queues with user
opts).

Instead, keep track of how many default/read/poll queues we actually
allocated (rather than asked by the user) and use that to assign our
queue mappings.

Fixes: b65bb777ef (" nvme-rdma: support separate queue maps for read and write")
Reported-by: Saleem, Shiraz <shiraz.saleem@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Sagi Grimberg 2019-01-18 16:43:24 -08:00 committed by Jens Axboe
parent 39d5775746
commit b1064d3e33
1 changed files with 25 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
drivers/nvme/host/rdma.c
View File

@ -119,6 +119,7 @@ struct nvme_rdma_ctrl {
struct nvme_ctrl ctrl;
bool use_inline_data;
u32 io_queues[HCTX_MAX_TYPES];
};
static inline struct nvme_rdma_ctrl *to_rdma_ctrl(struct nvme_ctrl *ctrl)
@ -165,8 +166,8 @@ static inline int nvme_rdma_queue_idx(struct nvme_rdma_queue *queue)
static bool nvme_rdma_poll_queue(struct nvme_rdma_queue *queue)
{
return nvme_rdma_queue_idx(queue) >
queue->ctrl->ctrl.opts->nr_io_queues +
queue->ctrl->ctrl.opts->nr_write_queues;
queue->ctrl->io_queues[HCTX_TYPE_DEFAULT] +
queue->ctrl->io_queues[HCTX_TYPE_READ];
}
static inline size_t nvme_rdma_inline_data_size(struct nvme_rdma_queue *queue)
@ -661,8 +662,21 @@ static int nvme_rdma_alloc_io_queues(struct nvme_rdma_ctrl *ctrl)
nr_io_queues = min_t(unsigned int, nr_io_queues,
ibdev->num_comp_vectors);
nr_io_queues += min(opts->nr_write_queues, num_online_cpus());
nr_io_queues += min(opts->nr_poll_queues, num_online_cpus());
if (opts->nr_write_queues) {
ctrl->io_queues[HCTX_TYPE_DEFAULT] =
min(opts->nr_write_queues, nr_io_queues);
nr_io_queues += ctrl->io_queues[HCTX_TYPE_DEFAULT];
} else {
ctrl->io_queues[HCTX_TYPE_DEFAULT] = nr_io_queues;
}
ctrl->io_queues[HCTX_TYPE_READ] = nr_io_queues;
if (opts->nr_poll_queues) {
ctrl->io_queues[HCTX_TYPE_POLL] =
min(opts->nr_poll_queues, num_online_cpus());
nr_io_queues += ctrl->io_queues[HCTX_TYPE_POLL];
}
ret = nvme_set_queue_count(&ctrl->ctrl, &nr_io_queues);
if (ret)
@ -1789,17 +1803,15 @@ static int nvme_rdma_map_queues(struct blk_mq_tag_set *set)
struct nvme_rdma_ctrl *ctrl = set->driver_data;
set->map[HCTX_TYPE_DEFAULT].queue_offset = 0;
set->map[HCTX_TYPE_READ].nr_queues = ctrl->ctrl.opts->nr_io_queues;
set->map[HCTX_TYPE_DEFAULT].nr_queues =
ctrl->io_queues[HCTX_TYPE_DEFAULT];
set->map[HCTX_TYPE_READ].nr_queues = ctrl->io_queues[HCTX_TYPE_READ];
if (ctrl->ctrl.opts->nr_write_queues) {
/* separate read/write queues */
set->map[HCTX_TYPE_DEFAULT].nr_queues =
ctrl->ctrl.opts->nr_write_queues;
set->map[HCTX_TYPE_READ].queue_offset =
ctrl->ctrl.opts->nr_write_queues;
ctrl->io_queues[HCTX_TYPE_DEFAULT];
} else {
/* mixed read/write queues */
set->map[HCTX_TYPE_DEFAULT].nr_queues =
ctrl->ctrl.opts->nr_io_queues;
set->map[HCTX_TYPE_READ].queue_offset = 0;
}
blk_mq_rdma_map_queues(&set->map[HCTX_TYPE_DEFAULT],
@ -1809,12 +1821,12 @@ static int nvme_rdma_map_queues(struct blk_mq_tag_set *set)
if (ctrl->ctrl.opts->nr_poll_queues) {
set->map[HCTX_TYPE_POLL].nr_queues =
ctrl->ctrl.opts->nr_poll_queues;
ctrl->io_queues[HCTX_TYPE_POLL];
set->map[HCTX_TYPE_POLL].queue_offset =
ctrl->ctrl.opts->nr_io_queues;
ctrl->io_queues[HCTX_TYPE_DEFAULT];
if (ctrl->ctrl.opts->nr_write_queues)
set->map[HCTX_TYPE_POLL].queue_offset +=
ctrl->ctrl.opts->nr_write_queues;
ctrl->io_queues[HCTX_TYPE_READ];
blk_mq_map_queues(&set->map[HCTX_TYPE_POLL]);
}
return 0;