nr_poll_queues specifies the number of additional queues that will be connected for hosting polling latency critical I/O.
Signed-off-by: Sagi Grimberg <[email protected]> --- Documentation/nvme-connect.txt | 5 +++++ fabrics.c | 10 ++++++++++ 2 files changed, 15 insertions(+) diff --git a/Documentation/nvme-connect.txt b/Documentation/nvme-connect.txt index d4a0e6678475..5412472dbd35 100644 --- a/Documentation/nvme-connect.txt +++ b/Documentation/nvme-connect.txt @@ -17,6 +17,7 @@ SYNOPSIS [--hostnqn=<hostnqn> | -q <hostnqn>] [--nr-io-queues=<#> | -i <#>] [--nr-write-queues=<#> | -W <#>] + [--nr-poll-queues=<#> | -P <#>] [--queue-size=<#> | -Q <#>] [--keep-alive-tmo=<#> | -k <#>] [--reconnect-delay=<#> | -c <#>] @@ -80,6 +81,10 @@ OPTIONS --nr-write-queues=<#>:: Adds additional queues that will be used for write I/O. +-P <#>:: +--nr-poll-queues=<#>:: + Adds additional queues that will be used for polling latency sensitive I/O. + -Q <#>:: --queue-size=<#>:: Overrides the default number of elements in the I/O queues created diff --git a/fabrics.c b/fabrics.c index 5cc1a795345a..efe2ce89cdca 100644 --- a/fabrics.c +++ b/fabrics.c @@ -54,6 +54,7 @@ static struct config { char *hostid; int nr_io_queues; int nr_write_queues; + int nr_poll_queues; int queue_size; int keep_alive_tmo; int reconnect_delay; @@ -624,6 +625,8 @@ static int build_options(char *argstr, int max_len) cfg.nr_io_queues) || add_int_argument(&argstr, &max_len, "nr_write_queues", cfg.nr_write_queues) || + add_int_argument(&argstr, &max_len, "nr_poll_queues", + cfg.nr_poll_queues) || add_int_argument(&argstr, &max_len, "queue_size", cfg.queue_size) || add_int_argument(&argstr, &max_len, "keep_alive_tmo", cfg.keep_alive_tmo) || @@ -704,6 +707,13 @@ retry: p += len; } + if (cfg.nr_poll_queues) { + len = sprintf(p, ",nr_poll_queues=%d", cfg.nr_poll_queues); + if (len < 0) + return -EINVAL; + p += len; + } + if (cfg.host_traddr) { len = sprintf(p, ",host_traddr=%s", cfg.host_traddr); if (len < 0) -- 2.17.1
