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authorChuck Lever <chuck.lever@oracle.com>2015-10-24 17:27:10 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2015-11-02 13:45:15 -0500
commitfe97b47cd623ebbaa55a163c336abc47153526d1 (patch)
treed936169799d99d924f92b385d1af31d62d083b90 /net/sunrpc/xprtrdma/transport.c
parent1e465fd4ff475cc29c866ee75496c941b3908e69 (diff)
xprtrdma: Use workqueue to process RPC/RDMA replies
The reply tasklet is fast, but it's single threaded. After reply traffic saturates a single CPU, there's no more reply processing capacity. Replace the tasklet with a workqueue to spread reply handling across all CPUs. This also moves RPC/RDMA reply handling out of the soft IRQ context and into a context that allows sleeps. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Tested-By: Devesh Sharma <devesh.sharma@avagotech.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/transport.c')
-rw-r--r--net/sunrpc/xprtrdma/transport.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index e9e5ed7a57fe..897a2f3a9620 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -732,6 +732,7 @@ void xprt_rdma_cleanup(void)
dprintk("RPC: %s: xprt_unregister returned %i\n",
__func__, rc);
+ rpcrdma_destroy_wq();
frwr_destroy_recovery_wq();
}
@@ -743,8 +744,15 @@ int xprt_rdma_init(void)
if (rc)
return rc;
+ rc = rpcrdma_alloc_wq();
+ if (rc) {
+ frwr_destroy_recovery_wq();
+ return rc;
+ }
+
rc = xprt_register_transport(&xprt_rdma);
if (rc) {
+ rpcrdma_destroy_wq();
frwr_destroy_recovery_wq();
return rc;
}