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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 05:34:00 +08:00
linux-next/drivers/vhost
Jason Wang f5a4941aa6 vhost_net: flush batched heads before trying to busy polling
After commit e2b3b35eb9 ("vhost_net: batch used ring update in rx"),
we tend to batch updating used heads. But it doesn't flush batched
heads before trying to do busy polling, this will cause vhost to wait
for guest TX which waits for the used RX. Fixing by flush batched
heads before busy loop.

1 byte TCP_RR performance recovers from 13107.83 to 50402.65.

Fixes: e2b3b35eb9 ("vhost_net: batch used ring update in rx")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-30 13:29:03 -04:00
..
Kconfig tap: tap as an independent module 2017-02-11 20:59:41 -05:00
Kconfig.vringh vhost: split out vringh Kconfig 2016-08-02 16:54:28 +03:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
net.c vhost_net: flush batched heads before trying to busy polling 2018-05-30 13:29:03 -04:00
scsi.c vhost: remove unused lock check flag in vhost_dev_cleanup() 2018-02-01 16:26:44 +02:00
test.c vhost: remove unused lock check flag in vhost_dev_cleanup() 2018-02-01 16:26:44 +02:00
test.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vhost.c vhost: synchronize IOTLB message with dev cleanup 2018-05-24 22:09:51 -04:00
vhost.h vhost: return bool from *_access_ok() functions 2018-04-11 10:54:06 -04:00
vringh.c vringh: kill off ACCESS_ONCE() 2016-12-16 00:13:36 +02:00
vsock.c fw_cfg, vhost: features fixes 2018-04-06 19:21:41 -07:00