vhost: lockless enqueuing

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We use spinlock to synchronize the work list now which may cause
unnecessary contentions. So this patch switch to use llist to remove
this contention. Pktgen tests shows about 5% improvement:

Before:
~1300000 pps
After:
~1370000 pps

Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

...

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Jason Wang 2016-04-25 22:14:33 -04:00 • committed by Michael S. Tsirkin

parent 7235acdb11

commit 04b96e5528

2 changed files with 29 additions and 30 deletions

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52

drivers/vhost/vhost.c

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7

drivers/vhost/vhost.h

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