Re: [PATCH 1/6] vhost: allow device that does not depend on vhost worker

On 2020/6/2 下午1:01, Michael S. Tsirkin wrote: On Fri, May 29, 2020 at 04:02:58PM +0800, Jason Wang wrote: diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index d450e16c5c25..70105e045768 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -166,11 +166,16 @@ static int

Re: [PATCH 1/6] vhost: allow device that does not depend on vhost worker

On Fri, May 29, 2020 at 04:02:58PM +0800, Jason Wang wrote: > diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c > index d450e16c5c25..70105e045768 100644 > --- a/drivers/vhost/vhost.c > +++ b/drivers/vhost/vhost.c > @@ -166,11 +166,16 @@ static int vhost_poll_wakeup(wait_queue_entry_t *wai

[PATCH 1/6] vhost: allow device that does not depend on vhost worker

vDPA device currently relays the eventfd via vhost worker. This is inefficient due the latency of wakeup and scheduling, so this patch tries to introduce a use_worker attribute for the vhost device. When use_worker is not set with vhost_dev_init(), vhost won't try to allocate a worker thread and th