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| author |   Chuck Lever <chuck.lever@oracle.com> | 2020-12-29 15:55:17 -0500 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2021-01-25 09:36:28 -0500 |
| commit | 22df5a22462e836ccb30634c3a52602091179a73 (patch) | |
| tree | 26ac5784c1285499b0a1598cba5a3eab27658ebe /net/sunrpc/xprtrdma/svc_rdma_sendto.c | |
| parent | svcrdma: Convert rdma_stat_recv to a per-CPU counter (diff) | |
| download | linux-dev-22df5a22462e836ccb30634c3a52602091179a73.tar.xz linux-dev-22df5a22462e836ccb30634c3a52602091179a73.zip | |
svcrdma: Convert rdma_stat_sq_starve to a per-CPU counter
Avoid the overhead of a memory bus lock cycle for counting a value
that is hardly every used.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/svc_rdma_sendto.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_sendto.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c index 68af79d4f04f..52c759a8543e 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c +++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c @@ -317,7 +317,7 @@ int svc_rdma_send(struct svcxprt_rdma *rdma, struct svc_rdma_send_ctxt *ctxt) /* If the SQ is full, wait until an SQ entry is available */ while (1) { if ((atomic_dec_return(&rdma->sc_sq_avail) < 0)) { - atomic_inc(&rdma_stat_sq_starve); + percpu_counter_inc(&svcrdma_stat_sq_starve); trace_svcrdma_sq_full(rdma); atomic_inc(&rdma->sc_sq_avail); wait_event(rdma->sc_send_wait, |