Jason Wang c92112aed3 vhost_net: use vhost_add_used_and_signal_n() in vhost_zerocopy_signal_used() ...

We tend to batch the used adding and signaling in vhost_zerocopy_callback()
which may result more than 100 used buffers to be updated in
vhost_zerocopy_signal_used() in some cases. So switch to use
vhost_add_used_and_signal_n() to avoid multiple calls to
vhost_add_used_and_signal(). Which means much less times of used index
updating and memory barriers.

2% performance improvement were seen on netperf TCP_RR test.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2013-09-03 22:46:57 -04:00

..

Kconfig

vhost: Make vhost a separate module

2013-07-07 17:33:44 +03:00

Makefile

vhost: Make vhost a separate module

2013-07-07 17:33:44 +03:00

net.c

vhost_net: use vhost_add_used_and_signal_n() in vhost_zerocopy_signal_used()

2013-09-03 22:46:57 -04:00

scsi.c

vhost: more fixes for 3.11

2013-07-23 14:38:20 -07:00

test.c

vhost: Remove custom vhost rcu usage

2013-07-11 15:38:40 +03:00

test.h

vhost test module

2010-12-09 16:00:21 +02:00

vhost.c

vhost: Include linux/uio.h instead of linux/socket.h

2013-08-20 15:05:04 -07:00

vhost.h

vhost: Remove custom vhost rcu usage

2013-07-11 15:38:40 +03:00

vringh.c

Add missing module license tag to vring helpers.

2013-05-08 10:49:03 +09:30