similar to: [PATCH] vhost_net: Use fdget() and fdput()

On Fri, May 05, 2023 at 04:41:55PM +0800, ye xingchen wrote: > >> > >> From: Ye Xingchen <ye.xingchen at zte.com.cn> > >> > >> convert the fget()/fput() uses to fdget()/fdput(). > >What's the advantages of this? > > > >Thanks > >> > >> Signed-off-by: Ye Xingchen <ye.xingchen at zte.com.cn> > >> ---

On Fri, May 5, 2023 at 2:24?PM <ye.xingchen at zte.com.cn> wrote: > > From: Ye Xingchen <ye.xingchen at zte.com.cn> > > convert the fget()/fput() uses to fdget()/fdput(). What's the advantages of this? Thanks > > Signed-off-by: Ye Xingchen <ye.xingchen at zte.com.cn> > --- > drivers/vhost/net.c | 10 +++++----- > 1 file changed, 5 insertions(+),

We get pointer ring from the exported sock, this means we should keep rx_ring and vq->private synced during both vq stop and backend set, otherwise we may see stale rx_ring. Fixes: c67df11f6e480 ("vhost_net: try batch dequing from skb array") Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/net.c |

Hi all: This series tries to implement rx batching for vhost-net. This is done by batching the dequeuing from skb_array which was exported by underlayer socket and pass the sbk back through msg_control to finish userspace copying. Tests shows at most 19% improvment on rx pps. Please review. Thanks Jason Wang (8): ptr_ring: introduce batch dequeuing skb_array: introduce batch dequeuing

Hi all: This series tries to implement rx batching for vhost-net. This is done by batching the dequeuing from skb_array which was exported by underlayer socket and pass the sbk back through msg_control to finish userspace copying. Tests shows at most 19% improvment on rx pps. Please review. Thanks Jason Wang (8): ptr_ring: introduce batch dequeuing skb_array: introduce batch dequeuing

We used to dequeue one skb during recvmsg() from skb_array, this could be inefficient because of the bad cache utilization and spinlock touching for each packet. This patch tries to batch them by calling batch dequeuing helpers explicitly on the exported skb array and pass the skb back through msg_control for underlayer socket to finish the userspace copying. Tests were done by XDP1: - small

On Tue, Mar 21, 2017 at 12:04:46PM +0800, Jason Wang wrote: > We used to dequeue one skb during recvmsg() from skb_array, this could > be inefficient because of the bad cache utilization and spinlock > touching for each packet. This patch tries to batch them by calling > batch dequeuing helpers explicitly on the exported skb array and pass > the skb back through msg_control for

On Tue, Mar 21, 2017 at 12:04:46PM +0800, Jason Wang wrote: > We used to dequeue one skb during recvmsg() from skb_array, this could > be inefficient because of the bad cache utilization and spinlock > touching for each packet. This patch tries to batch them by calling > batch dequeuing helpers explicitly on the exported skb array and pass > the skb back through msg_control for

On 13.02.20 17:29, Eugenio P?rez wrote: > Can we try with this traces? Does not apply on eccb852f1fe6bede630e2e4f1a121a81e34354ab, can you double check? > > From b793b4106085ab1970bdedb340e49f37843ed585 Mon Sep 17 00:00:00 2001 > From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma at redhat.com> > Date: Thu, 13 Feb 2020 17:27:05 +0100 > Subject: [PATCH] vhost: Add debug in

Tun device looks similar to a packet socket in that both pass complete frames from/to userspace. This patch fills in enough fields in the socket underlying tun driver to support sendmsg/recvmsg operations, and message flags MSG_TRUNC and MSG_DONTWAIT, and exports access to this socket to modules. Regular read/write behaviour is unchanged. This way, code using raw sockets to inject packets into

Tun device looks similar to a packet socket in that both pass complete frames from/to userspace. This patch fills in enough fields in the socket underlying tun driver to support sendmsg/recvmsg operations, and message flags MSG_TRUNC and MSG_DONTWAIT, and exports access to this socket to modules. Regular read/write behaviour is unchanged. This way, code using raw sockets to inject packets into

Tun device looks similar to a packet socket in that both pass complete frames from/to userspace. This patch fills in enough fields in the socket underlying tun driver to support sendmsg/recvmsg operations, and message flags MSG_TRUNC and MSG_DONTWAIT, and exports access to this socket to modules. Regular read/write behaviour is unchanged. This way, code using raw sockets to inject packets into

Tun device looks similar to a packet socket in that both pass complete frames from/to userspace. This patch fills in enough fields in the socket underlying tun driver to support sendmsg/recvmsg operations, and message flags MSG_TRUNC and MSG_DONTWAIT, and exports access to this socket to modules. Regular read/write behaviour is unchanged. This way, code using raw sockets to inject packets into

Tun device looks similar to a packet socket in that both pass complete frames from/to userspace. This patch fills in enough fields in the socket underlying tun driver to support sendmsg/recvmsg operations, and message flags MSG_TRUNC and MSG_DONTWAIT, and exports access to this socket to modules. Regular read/write behaviour is unchanged. This way, code using raw sockets to inject packets into

Tun device looks similar to a packet socket in that both pass complete frames from/to userspace. This patch fills in enough fields in the socket underlying tun driver to support sendmsg/recvmsg operations, and message flags MSG_TRUNC and MSG_DONTWAIT, and exports access to this socket to modules. Regular read/write behaviour is unchanged. This way, code using raw sockets to inject packets into

I did ping -c 20 -f ... ; reboot twice The ping after the first reboot showed .......E this was on the host console [ 55.951885] CPU: 34 PID: 1908 Comm: CPU 0/KVM Not tainted 5.5.0+ #21 [ 55.951891] Hardware name: IBM 3906 M04 704 (LPAR) [ 55.951892] Call Trace: [ 55.951902] [<0000001ede114132>] show_stack+0x8a/0xd0 [ 55.951906] [<0000001edeb0672a>]

On 14.02.20 08:40, Eugenio Perez Martin wrote: > Hi. > > Were the vhost and vhost_net modules loaded with dyndbg='+plt'? I miss > all the others regular debug traces on that one. I did echo -n 'file drivers/vhost/vhost.c +plt' > control and echo -n 'file drivers/vhost/net.c +plt' > control but apparently it did not work...me hates dynamic debug.

Hi, The following series of patches implements in btrfs an ioctl to do out-of-band deduplication of file extents. To be clear, this means that the file system is mounted and running, but the dedupe is not done during file writes, but after the fact when some userspace software initiates a dedupe. The primary patch is loosely based off of one sent by Josef Bacik back in January, 2011.

On Sun, May 23, 2010 at 7:10 AM, Michael S. Tsirkin <mst at redhat.com> wrote: > On Sat, May 22, 2010 at 07:31:15PM -0400, Balachandar wrote: >> Hi Michael, >> ?? Thank you for your vhost_net module. I am really excited to know that your >> module reduces latency 4 to 5 times. I was trying on my own project to reduce >> latency in using virtio but when i saw your

On Sun, May 23, 2010 at 7:10 AM, Michael S. Tsirkin <mst at redhat.com> wrote: > On Sat, May 22, 2010 at 07:31:15PM -0400, Balachandar wrote: >> Hi Michael, >> ?? Thank you for your vhost_net module. I am really excited to know that your >> module reduces latency 4 to 5 times. I was trying on my own project to reduce >> latency in using virtio but when i saw your