RDS: add receive message trace used by application

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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>

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Santosh Shilimkar 2016-07-04 22:35:15 -07:00

parent f9fb69adb6

commit 3289025aed

6 changed files with 109 additions and 3 deletions

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33

include/uapi/linux/rds.h

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