From fe3475af3bdf38fac78787ec2fe9eedaf2518188 Mon Sep 17 00:00:00 2001 From: Zhu Yanjun Date: Mon, 3 Jun 2019 00:28:01 -0400 Subject: net: rds: add per rds connection cache statistics The variable cache_allocs is to indicate how many frags (KiB) are in one rds connection frag cache. The command "rds-info -Iv" will output the rds connection cache statistics as below: " RDS IB Connections: LocalAddr RemoteAddr Tos SL LocalDev RemoteDev 1.1.1.14 1.1.1.14 58 255 fe80::2:c903:a:7a31 fe80::2:c903:a:7a31 send_wr=256, recv_wr=1024, send_sge=8, rdma_mr_max=4096, rdma_mr_size=257, cache_allocs=12 " This means that there are about 12KiB frag in this rds connection frag cache. Since rds.h in rds-tools is not related with the kernel rds.h, the change in kernel rds.h does not affect rds-tools. rds-info in rds-tools 2.0.5 and 2.0.6 is tested with this commit. It works well. Signed-off-by: Zhu Yanjun Signed-off-by: David S. Miller --- net/rds/ib.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'net/rds/ib.c') diff --git a/net/rds/ib.c b/net/rds/ib.c index 2da9b75bad16..f9baf2d5a82a 100644 --- a/net/rds/ib.c +++ b/net/rds/ib.c @@ -318,6 +318,7 @@ static int rds_ib_conn_info_visitor(struct rds_connection *conn, iinfo->max_recv_wr = ic->i_recv_ring.w_nr; iinfo->max_send_sge = rds_ibdev->max_sge; rds_ib_get_mr_info(rds_ibdev, iinfo); + iinfo->cache_allocs = atomic_read(&ic->i_cache_allocs); } return 1; } @@ -351,6 +352,7 @@ static int rds6_ib_conn_info_visitor(struct rds_connection *conn, iinfo6->max_recv_wr = ic->i_recv_ring.w_nr; iinfo6->max_send_sge = rds_ibdev->max_sge; rds6_ib_get_mr_info(rds_ibdev, iinfo6); + iinfo6->cache_allocs = atomic_read(&ic->i_cache_allocs); } return 1; } -- cgit v1.2.3