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| author | Chuck Lever <chuck.lever@oracle.com> | 2019-08-19 18:47:10 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-08-21 11:06:24 -0400 |
| commit | 6dc6ec9e04c468d994bff6eb660f3146f94cbfd9 (patch) | |
| tree | 8fdb4a42ade89bbad59dcafd1f20c6e84ba4c914 /include | |
| parent | 805a1f620ba38c5f6de8b9697f35dcb38d8112b5 (diff) | |
| download | linux-stable-6dc6ec9e04c468d994bff6eb660f3146f94cbfd9.tar.gz linux-stable-6dc6ec9e04c468d994bff6eb660f3146f94cbfd9.tar.bz2 linux-stable-6dc6ec9e04c468d994bff6eb660f3146f94cbfd9.zip | |
xprtrdma: Cache free MRs in each rpcrdma_req
Instead of a globally-contended MR free list, cache MRs in each
rpcrdma_req as they are released. This means acquiring and releasing
an MR will be lock-free in the common case, even outside the
transport send lock.
The original idea of per-rpcrdma_req MR free lists was suggested by
Shirley Ma <shirley.ma@oracle.com> several years ago. I just now
figured out how to make that idea work with on-demand MR allocation.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/trace/events/rpcrdma.h | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/include/trace/events/rpcrdma.h b/include/trace/events/rpcrdma.h index 83c4dfd7feea..a13830616107 100644 --- a/include/trace/events/rpcrdma.h +++ b/include/trace/events/rpcrdma.h @@ -451,16 +451,50 @@ TRACE_EVENT(xprtrdma_createmrs, TP_STRUCT__entry( __field(const void *, r_xprt) + __string(addr, rpcrdma_addrstr(r_xprt)) + __string(port, rpcrdma_portstr(r_xprt)) __field(unsigned int, count) ), TP_fast_assign( __entry->r_xprt = r_xprt; __entry->count = count; + __assign_str(addr, rpcrdma_addrstr(r_xprt)); + __assign_str(port, rpcrdma_portstr(r_xprt)); ), - TP_printk("r_xprt=%p: created %u MRs", - __entry->r_xprt, __entry->count + TP_printk("peer=[%s]:%s r_xprt=%p: created %u MRs", + __get_str(addr), __get_str(port), __entry->r_xprt, + __entry->count + ) +); + +TRACE_EVENT(xprtrdma_mr_get, + TP_PROTO( + const struct rpcrdma_req *req + ), + + TP_ARGS(req), + + TP_STRUCT__entry( + __field(const void *, req) + __field(unsigned int, task_id) + __field(unsigned int, client_id) + __field(u32, xid) + ), + + TP_fast_assign( + const struct rpc_rqst *rqst = &req->rl_slot; + + __entry->req = req; + __entry->task_id = rqst->rq_task->tk_pid; + __entry->client_id = rqst->rq_task->tk_client->cl_clid; + __entry->xid = be32_to_cpu(rqst->rq_xid); + ), + + TP_printk("task:%u@%u xid=0x%08x req=%p", + __entry->task_id, __entry->client_id, __entry->xid, + __entry->req ) ); |