Hi Nicolas-
> On Jan 23, 2019, at 8:12 AM, Nicolas Morey-Chaisemartin <nmoreychaisemartin@xxxxxxxx> wrote:
>
> Make sure host has at least 2 CPU before allocating to CPU#1
The fourth parameter of ib_alloc_cq() is not a CPU number,
it's a completion vector number. What failure did you see
that prompted this patch?
> Fixes: a4699f5647f3 (xprtrdma: Put Send CQ in IB_POLL_WORKQUEUE mode)
> Signed-off-by: Nicolas Morey-Chaisemartin <nmoreychaisemartin@xxxxxxxx>
> ---
> net/sunrpc/xprtrdma/verbs.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
> index b725911c0f3f..36aa7b2648e4 100644
> --- a/net/sunrpc/xprtrdma/verbs.c
> +++ b/net/sunrpc/xprtrdma/verbs.c
> @@ -546,7 +546,7 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
>
> sendcq = ib_alloc_cq(ia->ri_device, NULL,
> ep->rep_attr.cap.max_send_wr + 1,
> - 1, IB_POLL_WORKQUEUE);
> + num_online_cpus() > 1 ? 1 : 0, IB_POLL_WORKQUEUE);
> if (IS_ERR(sendcq)) {
> rc = PTR_ERR(sendcq);
> dprintk("RPC: %s: failed to create send CQ: %i\n",
> --
> 2.18.0
>
--
Chuck Lever
