wonderful-mobile/exynos-linux-stable
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

net-timestamp: SCHED timestamp on entering packet scheduler

Browse source 
Kernel transmit latency is often incurred in the packet scheduler.
Introduce a new timestamp on transmission just before entering the
scheduler. When data travels through multiple devices (bonding,
tunneling, ...) each device will export an individual timestamp.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Willem de Bruijn 2014-08-04 22:11:48 -04:00 • committed by David S. Miller
parent 09c2d251b7
commit e7fd288538
6 changed files with 31 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

1
include/uapi/linux/errqueue.h
View file

@ -39,6 +39,7 @@ struct scm_timestamping {
*/
enum {
SCM_TSTAMP_SND, /* driver passed skb to NIC, or HW */
SCM_TSTAMP_SCHED, /* data entered the packet scheduler */
};
#endif /* _UAPI_LINUX_ERRQUEUE_H */