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| author | Chuck Lever <chuck.lever@oracle.com> | 2020-11-09 14:40:08 -0500 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2020-11-11 10:49:12 -0500 |
| commit | 8e24e191d44f49f08f857f0ebc6fe91961cd1a09 (patch) | |
| tree | 924deace34da793a328c3e49727123426c49623c /net/sunrpc | |
| parent | 7703db978d4cf7c51426183b7c0d03c039757a44 (diff) | |
| download | linux-stable-8e24e191d44f49f08f857f0ebc6fe91961cd1a09.tar.gz linux-stable-8e24e191d44f49f08f857f0ebc6fe91961cd1a09.tar.bz2 linux-stable-8e24e191d44f49f08f857f0ebc6fe91961cd1a09.zip | |
xprtrdma: Trace unmap_sync calls
->buf_free is called nearly once per RPC. Only rarely does
xprt_rdma_free() have to do anything, thus tracing every one of
these calls seems unnecessary. Instead, just throw a trace event
when that one occasional RPC still has MRs that need to be
released.
xprt_rdma_free() is further micro-optimized to reduce the amount of
work done in the common case.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/xprtrdma/transport.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c index 8915e42240d3..bb3ed3db6c0a 100644 --- a/net/sunrpc/xprtrdma/transport.c +++ b/net/sunrpc/xprtrdma/transport.c @@ -599,11 +599,12 @@ static void xprt_rdma_free(struct rpc_task *task) { struct rpc_rqst *rqst = task->tk_rqstp; - struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(rqst->rq_xprt); struct rpcrdma_req *req = rpcr_to_rdmar(rqst); - if (!list_empty(&req->rl_registered)) - frwr_unmap_sync(r_xprt, req); + if (unlikely(!list_empty(&req->rl_registered))) { + trace_xprtrdma_mrs_zap(task); + frwr_unmap_sync(rpcx_to_rdmax(rqst->rq_xprt), req); + } /* XXX: If the RPC is completing because of a signal and * not because a reply was received, we ought to ensure |