diff options
| author | Santosh Shilimkar <santosh.shilimkar@oracle.com> | 2016-07-04 22:35:15 -0700 |
|---|---|---|
| committer | Santosh Shilimkar <santosh.shilimkar@oracle.com> | 2017-01-02 14:02:59 -0800 |
| commit | 3289025aedc018f8fd9d0e37fb9efa0c6d531ffa (patch) | |
| tree | 251ddb4c6606d91809d98d40a22e18382025664e /net/rds/tcp_recv.c | |
| parent | f9fb69adb6c7acca60977a4db5a5f95b8e66c041 (diff) | |
RDS: add receive message trace used by application
Socket option to tap receive path latency in various stages
in nano seconds. It can be enabled on selective sockets using
using SO_RDS_MSG_RXPATH_LATENCY socket option. RDS will return
the data to application with RDS_CMSG_RXPATH_LATENCY in defined
format. Scope is left to add more trace points for future
without need of change in the interface.
Reviewed-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Diffstat (limited to 'net/rds/tcp_recv.c')
| -rw-r--r-- | net/rds/tcp_recv.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/rds/tcp_recv.c b/net/rds/tcp_recv.c index ad4892e97f91..e006ef8e6d40 100644 --- a/net/rds/tcp_recv.c +++ b/net/rds/tcp_recv.c @@ -180,6 +180,9 @@ static int rds_tcp_data_recv(read_descriptor_t *desc, struct sk_buff *skb, rdsdebug("alloced tinc %p\n", tinc); rds_inc_path_init(&tinc->ti_inc, cp, cp->cp_conn->c_faddr); + tinc->ti_inc.i_rx_lat_trace[RDS_MSG_RX_HDR] = + local_clock(); + /* * XXX * we might be able to use the __ variants when * we've already serialized at a higher level. @@ -204,6 +207,8 @@ static int rds_tcp_data_recv(read_descriptor_t *desc, struct sk_buff *skb, /* could be 0 for a 0 len message */ tc->t_tinc_data_rem = be32_to_cpu(tinc->ti_inc.i_hdr.h_len); + tinc->ti_inc.i_rx_lat_trace[RDS_MSG_RX_START] = + local_clock(); } } |