diff options
| author | Sagi Grimberg <sagi@grimberg.me> | 2018-12-14 20:06:09 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-12-18 17:50:49 +0100 |
| commit | 89d43802b0e7298bc0b464bdb5fff864074e2218 (patch) | |
| tree | f20c00247491ff1431d50802b2b575a145241813 /drivers/nvme | |
| parent | nvme-fabrics: allow nvmf_connect_io_queue to poll (diff) | |
| download | linux-89d43802b0e7298bc0b464bdb5fff864074e2218.tar.xz linux-89d43802b0e7298bc0b464bdb5fff864074e2218.zip | |
nvme-fabrics: allow user to pass in nr_poll_queues
This argument will specify how many polling I/O queues to connect when
creating the controller. These I/O queues will host I/O that is set with
REQ_HIPRI.
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/host/fabrics.c | 13 | ||||
| -rw-r--r-- | drivers/nvme/host/fabrics.h | 3 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c index 5ff14f46a8d9..b2ab213f43de 100644 --- a/drivers/nvme/host/fabrics.c +++ b/drivers/nvme/host/fabrics.c @@ -617,6 +617,7 @@ static const match_table_t opt_tokens = { { NVMF_OPT_HDR_DIGEST, "hdr_digest" }, { NVMF_OPT_DATA_DIGEST, "data_digest" }, { NVMF_OPT_NR_WRITE_QUEUES, "nr_write_queues=%d" }, + { NVMF_OPT_NR_POLL_QUEUES, "nr_poll_queues=%d" }, { NVMF_OPT_ERR, NULL } }; @@ -850,6 +851,18 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts, } opts->nr_write_queues = token; break; + case NVMF_OPT_NR_POLL_QUEUES: + if (match_int(args, &token)) { + ret = -EINVAL; + goto out; + } + if (token <= 0) { + pr_err("Invalid nr_poll_queues %d\n", token); + ret = -EINVAL; + goto out; + } + opts->nr_poll_queues = token; + break; default: pr_warn("unknown parameter or missing value '%s' in ctrl creation request\n", p); diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h index cad70a9f976a..478343b73e38 100644 --- a/drivers/nvme/host/fabrics.h +++ b/drivers/nvme/host/fabrics.h @@ -62,6 +62,7 @@ enum { NVMF_OPT_HDR_DIGEST = 1 << 15, NVMF_OPT_DATA_DIGEST = 1 << 16, NVMF_OPT_NR_WRITE_QUEUES = 1 << 17, + NVMF_OPT_NR_POLL_QUEUES = 1 << 18, }; /** @@ -93,6 +94,7 @@ enum { * @hdr_digest: generate/verify header digest (TCP) * @data_digest: generate/verify data digest (TCP) * @nr_write_queues: number of queues for write I/O + * @nr_poll_queues: number of queues for polling I/O */ struct nvmf_ctrl_options { unsigned mask; @@ -113,6 +115,7 @@ struct nvmf_ctrl_options { bool hdr_digest; bool data_digest; unsigned int nr_write_queues; + unsigned int nr_poll_queues; }; /* |