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/ib_recv.c | |
| parent | f9fb69adb6c7acca60977a4db5a5f95b8e66c041 (diff) | |
| download | lwn-3289025aedc018f8fd9d0e37fb9efa0c6d531ffa.tar.gz lwn-3289025aedc018f8fd9d0e37fb9efa0c6d531ffa.zip | |
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/ib_recv.c')
| -rw-r--r-- | net/rds/ib_recv.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c index 4b0f12679219..e10624aa6959 100644 --- a/net/rds/ib_recv.c +++ b/net/rds/ib_recv.c @@ -911,8 +911,12 @@ static void rds_ib_process_recv(struct rds_connection *conn, ic->i_ibinc = ibinc; hdr = &ibinc->ii_inc.i_hdr; + ibinc->ii_inc.i_rx_lat_trace[RDS_MSG_RX_HDR] = + local_clock(); memcpy(hdr, ihdr, sizeof(*hdr)); ic->i_recv_data_rem = be32_to_cpu(hdr->h_len); + ibinc->ii_inc.i_rx_lat_trace[RDS_MSG_RX_START] = + local_clock(); rdsdebug("ic %p ibinc %p rem %u flag 0x%x\n", ic, ibinc, ic->i_recv_data_rem, hdr->h_flags); |