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| author | Chuck Lever | 2019-06-19 16:33:10 +0200 |
|---|---|---|
| committer | Anna Schumaker | 2019-07-09 16:30:25 +0200 |
| commit | d8099feda4833bab96b1bf312e9e6aad6b771570 (patch) | |
| tree | ec6af94bc83c935b9a7ad96819184990ed97da92 /include/trace | |
| parent | xprtrdma: Add mechanism to place MRs back on the free list (diff) | |
| download | kernel-qcow2-linux-d8099feda4833bab96b1bf312e9e6aad6b771570.tar.gz kernel-qcow2-linux-d8099feda4833bab96b1bf312e9e6aad6b771570.tar.xz kernel-qcow2-linux-d8099feda4833bab96b1bf312e9e6aad6b771570.zip | |
xprtrdma: Reduce context switching due to Local Invalidation
Since commit ba69cd122ece ("xprtrdma: Remove support for FMR memory
registration"), FRWR is the only supported memory registration mode.
We can take advantage of the asynchronous nature of FRWR's LOCAL_INV
Work Requests to get rid of the completion wait by having the
LOCAL_INV completion handler take care of DMA unmapping MRs and
waking the upper layer RPC waiter.
This eliminates two context switches when local invalidation is
necessary. As a side benefit, we will no longer need the per-xprt
deferred completion work queue.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/rpcrdma.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/trace/events/rpcrdma.h b/include/trace/events/rpcrdma.h index 1d2547084998..98023d91a72d 100644 --- a/include/trace/events/rpcrdma.h +++ b/include/trace/events/rpcrdma.h @@ -712,6 +712,7 @@ TRACE_EVENT(xprtrdma_wc_receive, DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_fastreg); DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li); DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li_wake); +DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li_done); TRACE_EVENT(xprtrdma_frwr_alloc, TP_PROTO( |