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On Thu, Jun 30, 2016 at 2:45 AM, Jason Wang <jasowang at redhat.com> wrote: > Hi all: > > This series tries to switch to use skb array in tun. This is used to > eliminate the spinlock contention between producer and consumer. The > conversion was straightforward: just introdce a tx skb array and use > it instead of sk_receive_queue. I'm seeing the splat below after this series. I'm still wrapping my head around this code, but it appears to be happening because the tun_struct passed into tun_queue_resize is uninitialized. Specifically, iteration over the disa...

On Thu, Jun 30, 2016 at 2:45 AM, Jason Wang <jasowang at redhat.com> wrote: > Hi all: > > This series tries to switch to use skb array in tun. This is used to > eliminate the spinlock contention between producer and consumer. The > conversion was straightforward: just introdce a tx skb array and use > it instead of sk_receive_queue. I'm seeing the splat below after this series. I'm still wrapping my head around this code, but it appears to be happening because the tun_struct passed into tun_queue_resize is uninitialized. Specifically, iteration over the disa...

On Thu, Jun 30, 2016 at 02:45:30PM +0800, Jason Wang wrote: > Hi all: > > This series tries to switch to use skb array in tun. This is used to > eliminate the spinlock contention between producer and consumer. The > conversion was straightforward: just introdce a tx skb array and use > it instead of sk_receive_queue. > > A minor issue is to keep the tx_queue_len behaviour, since tun used to > use it for the length of sk_receive_queue. This is done through: > > - add the ability to resize multiple rings at once to avoid handling >...

Hi all: This series tries to switch to use skb array in tun. This is used to eliminate the spinlock contention between producer and consumer. The conversion was straightforward: just introdce a tx skb array and use it instead of sk_receive_queue. A minor issue is to keep the tx_queue_len behaviour, since tun used to use it for the length of sk_receive_queue. This is done through: - add the ability to resize multiple rings at once to avoid handling partial resize failure for mutiple...

Hi all: This series tries to switch to use skb array in tun. This is used to eliminate the spinlock contention between producer and consumer. The conversion was straightforward: just introdce a tx skb array and use it instead of sk_receive_queue. A minor issue is to keep the tx_queue_len behaviour, since tun used to use it for the length of sk_receive_queue. This is done through: - add the ability to resize multiple rings at once to avoid handling partial resize failure for mutiple...

Hi all: This series tries to switch to use skb array in tun. This is used to eliminate the spinlock contention between producer and consumer. The conversion was straightforward: just introdce a tx skb array and use it instead of sk_receive_queue. A minor issue is to keep the tx_queue_len behaviour, since tun used to use it for the length of sk_receive_queue. This is done through: - add the ability to resize multiple rings at once to avoid handling partial resize failure for mutiple...

Hi all: This series tries to switch to use skb array in tun. This is used to eliminate the spinlock contention between producer and consumer. The conversion was straightforward: just introdce a tx skb array and use it instead of sk_receive_queue. A minor issue is to keep the tx_queue_len behaviour, since tun used to use it for the length of sk_receive_queue. This is done through: - add the ability to resize multiple rings at once to avoid handling partial resize failure for mutiple...

...2016 at 2:45 AM, Jason Wang <jasowang at redhat.com> wrote: > > Hi all: > > > > This series tries to switch to use skb array in tun. This is used to > > eliminate the spinlock contention between producer and consumer. The > > conversion was straightforward: just introdce a tx skb array and use > > it instead of sk_receive_queue. > > I'm seeing the splat below after this series. I'm still wrapping my > head around this code, but it appears to be happening because the > tun_struct passed into tun_queue_resize is uninitialized. > Specifi...