tree d1127fa5d22aeb035ca9977abbc73a29d5436fbe
parent ef759a2e54ed434b2f72b52a14edecd6d4eadf74
author Chuck Lever <cel@netapp.com> 1142880262 -0500
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1142880262 -0500

SUNRPC: provide a mechanism for collecting stats in the RPC client

Add a simple mechanism for collecting stats in the RPC client.  Stats are
tabulated during xprt_release.  Note that per_cpu shenanigans are not
required here because the RPC client already serializes on the transport
write lock.

Test plan:
Compile kernel with CONFIG_NFS enabled.  Basic performance regression
testing with high-speed networking and high performance server.

Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>