search for: premmption

Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/net/tun.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 44d4f3d..24ecd82 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1697,6 +1697,8 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, goto err_xdp; } } + rcu_read_unlock();

...ll > build_skb() to build skb. To support build skb, vnet header were also > stored into the header of the XDP buff. > > This userspace copy and XDP buffs building is key to achieve XDP > batching in TUN, since TUN does not need to care about userspace copy > and then can disable premmption for several XDP buffs to achieve > batching from XDP. > > TODO: reserve headroom based on the TUN XDP. > > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/vhost/net.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 74...

...0%/ +4%/ +492% 65535/ 8/ 0%/ -1%/ -1%/ +4%/ +38% Changes from V3: - drop single_task_running() - use cpu_relax_lowlatency() instead of cpu_relax() Changes from V2: - rename vhost_vq_more_avail() to vhost_vq_avail_empty(). And return false we __get_user() fails. - do not bother premmptions/timers for good path. - use vhost_vring_state as ioctl parameter instead of reinveting a new one. - add the unit of timeout (us) to the comment of new added ioctls Changes from V1: - remove the buggy vq_error() in vhost_vq_more_avail(). - leave vhost_enable_notify() untouched. Changes from RFC V...

...0%/ +4%/ +492% 65535/ 8/ 0%/ -1%/ -1%/ +4%/ +38% Changes from V3: - drop single_task_running() - use cpu_relax_lowlatency() instead of cpu_relax() Changes from V2: - rename vhost_vq_more_avail() to vhost_vq_avail_empty(). And return false we __get_user() fails. - do not bother premmptions/timers for good path. - use vhost_vring_state as ioctl parameter instead of reinveting a new one. - add the unit of timeout (us) to the comment of new added ioctls Changes from V1: - remove the buggy vq_error() in vhost_vq_more_avail(). - leave vhost_enable_notify() untouched. Changes from RFC V...

...TUN can choose to do XDP or call build_skb() to build skb. To support build skb, vnet header were also stored into the header of the XDP buff. This userspace copy and XDP buffs building is key to achieve XDP batching in TUN, since TUN does not need to care about userspace copy and then can disable premmption for several XDP buffs to achieve batching from XDP. TODO: reserve headroom based on the TUN XDP. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/net.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) diff --git a/drivers/vho...

...1%/ -1%/ +4%/ +38% > > Changes from V3: > - drop single_task_running() > - use cpu_relax_lowlatency() instead of cpu_relax() > > Changes from V2: > - rename vhost_vq_more_avail() to vhost_vq_avail_empty(). And return > false we __get_user() fails. > - do not bother premmptions/timers for good path. > - use vhost_vring_state as ioctl parameter instead of reinveting a new > one. > - add the unit of timeout (us) to the comment of new added ioctls > > Changes from V1: > - remove the buggy vq_error() in vhost_vq_more_avail(). > - leave vhost_enable_noti...

...ween TAP and ixgbe. Thanks Jason Wang (12): vhost_net: introduce helper to initialize tx iov iter vhost_net: introduce vhost_exceeds_weight() vhost_net: introduce vhost_has_more_pkts() vhost_net: split out datacopy logic vhost_net: batch update used ring for datacopy TX tuntap: enable premmption early tuntap: simplify error handling in tun_build_skb() tuntap: tweak on the path of non-xdp case in tun_build_skb() tuntap: split out XDP logic vhost_net: build xdp buff vhost_net: passing raw xdp buff to tun vhost_net: batch submitting XDP buffers to underlayer sockets drivers/net/...

...39%/ 1024 /+6.8% / 4096 /-0.01%/ 16384/+0.00%/ TCP_RR: size /-+% / 1 /+9.79% / 64 /+4.51% / 256 /+6.47% / 512 /-3.37% / 1024 /+6.15% / 4096 /+14.88%/ 16384/-2.23% / Changes from V2: - rename vhost_vq_more_avail() to vhost_vq_avail_empty(). And return false we __get_user() fails. - do not bother premmptions/timers for good path. - use vhost_vring_state as ioctl parameter instead of reinveting a new one. - add the unit of timeout (us) to the comment of new added ioctls Changes from V1: - remove the buggy vq_error() in vhost_vq_more_avail(). - leave vhost_enable_notify() untouched. Changes from RFC...

...39%/ 1024 /+6.8% / 4096 /-0.01%/ 16384/+0.00%/ TCP_RR: size /-+% / 1 /+9.79% / 64 /+4.51% / 256 /+6.47% / 512 /-3.37% / 1024 /+6.15% / 4096 /+14.88%/ 16384/-2.23% / Changes from V2: - rename vhost_vq_more_avail() to vhost_vq_avail_empty(). And return false we __get_user() fails. - do not bother premmptions/timers for good path. - use vhost_vring_state as ioctl parameter instead of reinveting a new one. - add the unit of timeout (us) to the comment of new added ioctls Changes from V1: - remove the buggy vq_error() in vhost_vq_more_avail(). - leave vhost_enable_notify() untouched. Changes from RFC...