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0dabe948f2
linux-stable/include/linux/sunrpc
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Chuck Lever 0dabe948f2 svcrdma: Avoid DMA mapping small RPC Replies 
On some platforms, DMA mapping part of a page is more costly than
copying bytes. Indeed, not involving the I/O MMU can help the
RPC/RDMA transport scale better for tiny I/Os across more RDMA
devices. This is because interaction with the I/O MMU is eliminated
for each of these small I/Os. Without the explicit unmapping, the
NIC no longer needs to do a costly internal TLB shoot down for
buffers that are just a handful of bytes.

Since pull-up is now a more a frequent operation, I've introduced a
trace point in the pull-up path. It can be used for debugging or
user-space tools that count pull-up frequency.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-03-16 12:04:33 -04:00
..
addr.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
auth_gss.h sunrpc: remove __KERNEL__ ifdefs 2019-11-12 11:43:29 -05:00
auth.h SUNRPC: Remove broken gss_mech_list_pseudoflavors() 2020-01-15 10:54:32 -05:00
bc_xprt.h SUNRPC: Destroy the back channel when we destroy the host transport 2019-10-30 12:04:35 -04:00
cache.h nfs: use time64_t internally 2019-12-18 18:07:32 +01:00
clnt.h This is a relatively quiet cycle for nfsd, mainly various bugfixes. 2019-12-07 16:56:00 -08:00
debug.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gss_api.h SUNRPC: Remove broken gss_mech_list_pseudoflavors() 2020-01-15 10:54:32 -05:00
gss_asn1.h
gss_err.h sunrpc: remove __KERNEL__ ifdefs 2019-11-12 11:43:29 -05:00
gss_krb5_enctypes.h SUNRPC: Add build option to disable support for insecure enctypes 2019-02-13 13:33:12 -05:00
gss_krb5.h sunrpc: convert to time64_t for expiry 2020-01-15 10:54:30 -05:00
metrics.h SUNRPC: Count ops completing with tk_status < 0 2019-07-06 14:54:51 -04:00
msg_prot.h sunrpc: remove __KERNEL__ ifdefs 2019-11-12 11:43:29 -05:00
rpc_pipe_fs.h sunrpc: remove __KERNEL__ ifdefs 2019-11-12 11:43:29 -05:00
rpc_rdma.h svcrdma: Use struct xdr_stream to decode ingress transport headers 2020-03-16 12:04:32 -04:00
sched.h NFS Client Updates for Linux 5.3 2019-09-26 12:20:14 -07:00
stats.h proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
svc_rdma.h svcrdma: Avoid DMA mapping small RPC Replies 2020-03-16 12:04:33 -04:00
svc_xprt.h nfsd: Fix NFSv4 READ on RDMA when using readv 2020-03-16 12:04:31 -04:00
svc.h nfsd: Fix NFSv4 READ on RDMA when using readv 2020-03-16 12:04:31 -04:00
svcauth_gss.h sunrpc: remove __KERNEL__ ifdefs 2019-11-12 11:43:29 -05:00
svcauth.h sunrpc: remove __KERNEL__ ifdefs 2019-11-12 11:43:29 -05:00
svcsock.h SUNRPC: Cache the process user cred in the RPC server listener 2019-04-24 09:46:35 -04:00
timer.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
types.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xdr.h SUNRPC: Add encoders for list item discriminators 2020-03-16 12:04:32 -04:00
xprt.h This is a relatively quiet cycle for nfsd, mainly various bugfixes. 2019-12-07 16:56:00 -08:00
xprtmultipath.h SUNRPC: Add basic load balancing to the transport switch 2019-07-06 14:54:49 -04:00
xprtrdma.h xprtrdma: Boost client's max slot table size to match Linux server 2019-08-20 11:17:16 -04:00
xprtsock.h This is a relatively quiet cycle for nfsd, mainly various bugfixes. 2019-12-07 16:56:00 -08:00