search for: piobuf

Hi, This set of patches remarkably accelerates IDE PIO on HVM/IA64. I got a throughput of 2.11MB/sec in disk read performance. Without it, it was only 64kB/sec. I posted the prototype once. http://lists.xensource.com/archives/html/xen-devel/2006-12/msg00077.html The basic idea is to add a buffering mechanism in a hypervisor. I know this approach is not sophisticated. But there is no other good

...-git a/drivers/net/ethernet/amd/sunlance.c b/drivers/net/ethernet/amd/sunlance.c index ebcbf8ca4829..46bdaf1a4057 100644 --- a/drivers/net/ethernet/amd/sunlance.c +++ b/drivers/net/ethernet/amd/sunlance.c @@ -1097,7 +1097,7 @@ static void lance_piozero(void __iomem *dest, int len) sbus_writeb(0, piobuf); } -static void lance_tx_timeout(struct net_device *dev) +static void lance_tx_timeout(struct net_device *dev, int txqueue) { struct lance_private *lp = netdev_priv(dev); diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c index 98f8f2033154..81...

...ce.c b/drivers/net/ethernet/amd/sunlance.c > index ebcbf8ca4829..46bdaf1a4057 100644 > --- a/drivers/net/ethernet/amd/sunlance.c > +++ b/drivers/net/ethernet/amd/sunlance.c > @@ -1097,7 +1097,7 @@ static void lance_piozero(void __iomem *dest, int len) > sbus_writeb(0, piobuf); > } > > -static void lance_tx_timeout(struct net_device *dev) > +static void lance_tx_timeout(struct net_device *dev, int txqueue) > { > struct lance_private *lp = netdev_priv(dev); > > diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/...

Hi Michael, Em sex., 22 de nov. de 2019 ?s 07:31, Michael S. Tsirkin <mst at redhat.com> escreveu: > > On Thu, Nov 21, 2019 at 10:36:36PM -0300, Julio Faracco wrote: > > Driver virtio_net is not handling error events for TX provided by > > dev_watchdog. This event is reached when transmission queue is having > > problems to transmit packets. This could happen for any

Hi Michael, Em sex., 22 de nov. de 2019 ?s 07:31, Michael S. Tsirkin <mst at redhat.com> escreveu: > > On Thu, Nov 21, 2019 at 10:36:36PM -0300, Julio Faracco wrote: > > Driver virtio_net is not handling error events for TX provided by > > dev_watchdog. This event is reached when transmission queue is having > > problems to transmit packets. This could happen for any

...-git a/drivers/net/ethernet/amd/sunlance.c b/drivers/net/ethernet/amd/sunlance.c index ebcbf8ca4829..46bdaf1a4057 100644 --- a/drivers/net/ethernet/amd/sunlance.c +++ b/drivers/net/ethernet/amd/sunlance.c @@ -1097,7 +1097,7 @@ static void lance_piozero(void __iomem *dest, int len) sbus_writeb(0, piobuf); } -static void lance_tx_timeout(struct net_device *dev) +static void lance_tx_timeout(struct net_device *dev, int txqueue) { struct lance_private *lp = netdev_priv(dev); diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c index 98f8f2033154..81...

...-git a/drivers/net/ethernet/amd/sunlance.c b/drivers/net/ethernet/amd/sunlance.c index ebcbf8ca4829..46bdaf1a4057 100644 --- a/drivers/net/ethernet/amd/sunlance.c +++ b/drivers/net/ethernet/amd/sunlance.c @@ -1097,7 +1097,7 @@ static void lance_piozero(void __iomem *dest, int len) sbus_writeb(0, piobuf); } -static void lance_tx_timeout(struct net_device *dev) +static void lance_tx_timeout(struct net_device *dev, int txqueue) { struct lance_private *lp = netdev_priv(dev); diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c index 98f8f2033154..81...

...-git a/drivers/net/ethernet/amd/sunlance.c b/drivers/net/ethernet/amd/sunlance.c index ebcbf8ca4829..46bdaf1a4057 100644 --- a/drivers/net/ethernet/amd/sunlance.c +++ b/drivers/net/ethernet/amd/sunlance.c @@ -1097,7 +1097,7 @@ static void lance_piozero(void __iomem *dest, int len) sbus_writeb(0, piobuf); } -static void lance_tx_timeout(struct net_device *dev) +static void lance_tx_timeout(struct net_device *dev, int txqueue) { struct lance_private *lp = netdev_priv(dev); diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c index 98f8f2033154..81...

...-git a/drivers/net/ethernet/amd/sunlance.c b/drivers/net/ethernet/amd/sunlance.c index ebcbf8ca4829..46bdaf1a4057 100644 --- a/drivers/net/ethernet/amd/sunlance.c +++ b/drivers/net/ethernet/amd/sunlance.c @@ -1097,7 +1097,7 @@ static void lance_piozero(void __iomem *dest, int len) sbus_writeb(0, piobuf); } -static void lance_tx_timeout(struct net_device *dev) +static void lance_tx_timeout(struct net_device *dev, unsigned int txqueue) { struct lance_private *lp = netdev_priv(dev); diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c index 98f8f20...

On Sun, 24 Nov 2019 18:29:49 -0500, Michael S. Tsirkin wrote: > netdev: pass the stuck queue to the timeout handler > > This allows incrementing the correct timeout statistic without any mess. > Down the road, devices can learn to reset just the specific queue. FWIW Acked-by: Jakub Kicinski <jakub.kicinski at netronome.com>

...rnet/amd/sunlance.c > > index ebcbf8ca4829..b00e00881253 100644 > > --- a/drivers/net/ethernet/amd/sunlance.c > > +++ b/drivers/net/ethernet/amd/sunlance.c > > @@ -1097,7 +1097,7 @@ static void lance_piozero(void __iomem *dest, int len) > > sbus_writeb(0, piobuf); > > } > > > > -static void lance_tx_timeout(struct net_device *dev) > > +static void lance_tx_timeout(struct net_device *dev, unsigned int txqueue) > > { > > struct lance_private *lp = netdev_priv(dev); > > > > diff --git a/drivers/net/ether...

...-git a/drivers/net/ethernet/amd/sunlance.c b/drivers/net/ethernet/amd/sunlance.c index ebcbf8ca4829..b00e00881253 100644 --- a/drivers/net/ethernet/amd/sunlance.c +++ b/drivers/net/ethernet/amd/sunlance.c @@ -1097,7 +1097,7 @@ static void lance_piozero(void __iomem *dest, int len) sbus_writeb(0, piobuf); } -static void lance_tx_timeout(struct net_device *dev) +static void lance_tx_timeout(struct net_device *dev, unsigned int txqueue) { struct lance_private *lp = netdev_priv(dev); diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c index 98f8f20...

...-git a/drivers/net/ethernet/amd/sunlance.c b/drivers/net/ethernet/amd/sunlance.c index ebcbf8ca4829..b00e00881253 100644 --- a/drivers/net/ethernet/amd/sunlance.c +++ b/drivers/net/ethernet/amd/sunlance.c @@ -1097,7 +1097,7 @@ static void lance_piozero(void __iomem *dest, int len) sbus_writeb(0, piobuf); } -static void lance_tx_timeout(struct net_device *dev) +static void lance_tx_timeout(struct net_device *dev, unsigned int txqueue) { struct lance_private *lp = netdev_priv(dev); diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c index 98f8f20...

...-git a/drivers/net/ethernet/amd/sunlance.c b/drivers/net/ethernet/amd/sunlance.c index ebcbf8ca4829..b00e00881253 100644 --- a/drivers/net/ethernet/amd/sunlance.c +++ b/drivers/net/ethernet/amd/sunlance.c @@ -1097,7 +1097,7 @@ static void lance_piozero(void __iomem *dest, int len) sbus_writeb(0, piobuf); } -static void lance_tx_timeout(struct net_device *dev) +static void lance_tx_timeout(struct net_device *dev, unsigned int txqueue) { struct lance_private *lp = netdev_priv(dev); diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c index 98f8f20...

...-git a/drivers/net/ethernet/amd/sunlance.c b/drivers/net/ethernet/amd/sunlance.c index ebcbf8ca4829..b00e00881253 100644 --- a/drivers/net/ethernet/amd/sunlance.c +++ b/drivers/net/ethernet/amd/sunlance.c @@ -1097,7 +1097,7 @@ static void lance_piozero(void __iomem *dest, int len) sbus_writeb(0, piobuf); } -static void lance_tx_timeout(struct net_device *dev) +static void lance_tx_timeout(struct net_device *dev, unsigned int txqueue) { struct lance_private *lp = netdev_priv(dev); diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c index 98f8f20...

...-git a/drivers/net/ethernet/amd/sunlance.c b/drivers/net/ethernet/amd/sunlance.c index ebcbf8ca4829..b00e00881253 100644 --- a/drivers/net/ethernet/amd/sunlance.c +++ b/drivers/net/ethernet/amd/sunlance.c @@ -1097,7 +1097,7 @@ static void lance_piozero(void __iomem *dest, int len) sbus_writeb(0, piobuf); } -static void lance_tx_timeout(struct net_device *dev) +static void lance_tx_timeout(struct net_device *dev, unsigned int txqueue) { struct lance_private *lp = netdev_priv(dev); diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c index 98f8f20...

This series add two important features. One of them changes the .ndo_tx_timeout to include an extra parameter to identify the stuck queue. Many drivers are using a nester loop to identify which queue is stooped/stucked. This is a redundant work since dev_watchdog is doing exactly the same thing. This is so interesting for other drivers to in terms of code optimization. The second part (second

This series add two important features. One of them changes the .ndo_tx_timeout to include an extra parameter to identify the stuck queue. Many drivers are using a nester loop to identify which queue is stooped/stucked. This is a redundant work since dev_watchdog is doing exactly the same thing. This is so interesting for other drivers to in terms of code optimization. The second part (second

A bunch of drivers want to know which tx queue triggered a timeout, and virtio wants to do the same. We actually have the info to hand, let's just pass it on to drivers. Note: tested with an experimental virtio patch by Julio. That patch itself isn't ready yet though, so not included. Other drivers compiled only. Michael S. Tsirkin (3): netdev: pass the stuck queue to the timeout

Sorry about the churn, v10 was based on net - not on net-next by mistake. A bunch of drivers want to know which tx queue triggered a timeout, and virtio wants to do the same. We actually have the info to hand, let's just pass it on to drivers. Note: tested with an experimental virtio patch by Julio. That patch itself isn't ready yet though, so not included. Other drivers compiled only.