Hi Bruce-
Here are all the patches I'd like to see merged into the next kernel
(v4.18 or v5.0) if possible. The main changes are:
- Added trace points to svcrdma
- Post Recv WRs in Receive completion handler
- Handle Send WRs with fewer page allocations
- Lots of clean up that results from these changes
The svc_rdma_recv_ctxt and svc_rdma_send_ctxt changes improve the
efficiency of the transport receive and send paths by reducing
memory allocation and DMA mapping activity per RPC. Posting Recv
WRs in the Receive completion handler means the Receive Queue
does not bounce among all the CPUs.
---
Chuck Lever (19):
svcrdma: Add proper SPDX tags for NetApp-contributed source
svcrdma: Use passed-in net namespace when creating RDMA listener
xprtrdma: Prepare RPC/RDMA includes for server-side trace points
svcrdma: Trace key RPC/RDMA protocol events
svcrdma: Trace key RDMA API events
svcrdma: Introduce svc_rdma_recv_ctxt
svcrdma: Remove sc_rq_depth
svcrdma: Simplify svc_rdma_recv_ctxt_put
svcrdma: Preserve Receive buffer until svc_rdma_sendto
svcrdma: Persistently allocate and DMA-map Receive buffers
svcrdma: Allocate recv_ctxt's on CPU handling Receives
svcrdma: Refactor svc_rdma_dma_map_buf
svcrdma: Clean up Send SGE accounting
svcrdma: Introduce svc_rdma_send_ctxt
svcrdma: Don't overrun the SGE array in svc_rdma_send_ctxt
svcrdma: Remove post_send_wr
svcrdma: Simplify svc_rdma_send()
svcrdma: Persistently allocate and DMA-map Send buffers
svcrdma: Remove unused svc_rdma_op_ctxt
include/linux/sunrpc/svc_rdma.h | 95 ++---
include/trace/events/rpcrdma.h | 584 ++++++++++++++++++++++++++++
net/sunrpc/xprtrdma/backchannel.c | 2
net/sunrpc/xprtrdma/fmr_ops.c | 3
net/sunrpc/xprtrdma/frwr_ops.c | 2
net/sunrpc/xprtrdma/module.c | 4
net/sunrpc/xprtrdma/rpc_rdma.c | 7
net/sunrpc/xprtrdma/svc_rdma.c | 3
net/sunrpc/xprtrdma/svc_rdma_backchannel.c | 54 +--
net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 439 +++++++++++++++------
net/sunrpc/xprtrdma/svc_rdma_rw.c | 133 +++---
net/sunrpc/xprtrdma/svc_rdma_sendto.c | 510 ++++++++++++++++--------
net/sunrpc/xprtrdma/svc_rdma_transport.c | 484 ++++-------------------
net/sunrpc/xprtrdma/transport.c | 4
net/sunrpc/xprtrdma/verbs.c | 1
net/sunrpc/xprtrdma/xprt_rdma.h | 2
16 files changed, 1461 insertions(+), 866 deletions(-)
--
Chuck Lever
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