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| author | Chuck Lever <chuck.lever@oracle.com> | 2014-05-28 16:33:42 +0200 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2014-06-04 14:56:44 +0200 |
| commit | 1c00dd0776543608e13c74a527660cb8cd28a74f (patch) | |
| tree | 225dba01c882c314e3f7aa8bfd9febd830344f22 /net/sunrpc/xprtrdma/xprt_rdma.h | |
| parent | xprtrmda: Reduce lock contention in completion handlers (diff) | |
| download | linux-1c00dd0776543608e13c74a527660cb8cd28a74f.tar.xz linux-1c00dd0776543608e13c74a527660cb8cd28a74f.zip | |
xprtrmda: Reduce calls to ib_poll_cq() in completion handlers
Change the completion handlers to grab up to 16 items per
ib_poll_cq() call. No extra ib_poll_cq() is needed if fewer than 16
items are returned.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/xprt_rdma.h')
| -rw-r--r-- | net/sunrpc/xprtrdma/xprt_rdma.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index 334ab6ee041a..cb4c882b97fe 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -74,6 +74,8 @@ struct rpcrdma_ia { * RDMA Endpoint -- one per transport instance */ +#define RPCRDMA_POLLSIZE (16) + struct rpcrdma_ep { atomic_t rep_cqcount; int rep_cqinit; @@ -88,6 +90,8 @@ struct rpcrdma_ep { struct rdma_conn_param rep_remote_cma; struct sockaddr_storage rep_remote_addr; struct delayed_work rep_connect_worker; + struct ib_wc rep_send_wcs[RPCRDMA_POLLSIZE]; + struct ib_wc rep_recv_wcs[RPCRDMA_POLLSIZE]; }; #define INIT_CQCOUNT(ep) atomic_set(&(ep)->rep_cqcount, (ep)->rep_cqinit) |