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authorZhu Yanjun <yanjun.zhu@oracle.com>2019-06-03 00:28:01 -0400
committerDavid S. Miller <davem@davemloft.net>2019-06-05 17:07:06 -0700
commitfe3475af3bdf38fac78787ec2fe9eedaf2518188 (patch)
tree18e24b6e1102c9b28096416b2f0bdcb7e04c92a2 /net/rds
parentdceebd4c927427669fa285b7d972a8156e2ef233 (diff)
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 <yanjun.zhu@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds')
-rw-r--r--net/rds/ib.c2
1 files changed, 2 insertions, 0 deletions
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;
}