Displaying 9 results from an estimated 9 matches for "virtnet_cpu_onlin".
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virtnet_cpu_online
2016 Aug 12
0
[PATCH 6/6] net: virtio-net: Convert to hotplug state machine
...by the rtnl lock */
struct virtio_net_ctrl_hdr ctrl_hdr;
@@ -1237,25 +1238,53 @@ static void virtnet_set_affinity(struct virtnet_info *vi)
vi->affinity_hint_set = true;
}
-static int virtnet_cpu_callback(struct notifier_block *nfb,
- unsigned long action, void *hcpu)
+static int virtnet_cpu_online(unsigned int cpu, struct hlist_node *node)
{
- struct virtnet_info *vi = container_of(nfb, struct virtnet_info, nb);
+ struct virtnet_info *vi = hlist_entry_safe(node, struct virtnet_info,
+ node);
+ virtnet_set_affinity(vi);
+ return 0;
+}
- switch(action & ~CPU_TASKS_FROZEN) {
- c...
2016 Aug 12
0
[PATCH 6/6] net: virtio-net: Convert to hotplug state machine
...by the rtnl lock */
struct virtio_net_ctrl_hdr ctrl_hdr;
@@ -1237,25 +1238,53 @@ static void virtnet_set_affinity(struct virtnet_info *vi)
vi->affinity_hint_set = true;
}
-static int virtnet_cpu_callback(struct notifier_block *nfb,
- unsigned long action, void *hcpu)
+static int virtnet_cpu_online(unsigned int cpu, struct hlist_node *node)
{
- struct virtnet_info *vi = container_of(nfb, struct virtnet_info, nb);
+ struct virtnet_info *vi = hlist_entry_safe(node, struct virtnet_info,
+ node);
+ virtnet_set_affinity(vi);
+ return 0;
+}
- switch(action & ~CPU_TASKS_FROZEN) {
- c...
2018 Aug 02
0
[net-next, v6, 6/7] net-sysfs: Add interface for Rx queue(s) map per Tx queue
...; >>
> >> A quick fix for this would be to just extract netif_set_xps_queue() out
> >> of the lock by simply wrapping it with another put/get_online_cpus
> >> (unlock right before and hold lock right after).
> >
> > virtnet_set_affinity() is called from virtnet_cpu_online(), which is
> > called under cpus_read_lock too.
> >
> > It looks like now we can't call netif_set_xps_queue() from cpu hotplug
> > callbacks.
> >
> > I can suggest a very straightforward fix for this problem. The patch is
> > attached.
> >
&g...
2018 Aug 03
0
[net-next, v6, 6/7] net-sysfs: Add interface for Rx queue(s) map per Tx queue
...this would be to just extract netif_set_xps_queue() out
> > > >> of the lock by simply wrapping it with another put/get_online_cpus
> > > >> (unlock right before and hold lock right after).
> > > >
> > > > virtnet_set_affinity() is called from virtnet_cpu_online(), which is
> > > > called under cpus_read_lock too.
> > > >
> > > > It looks like now we can't call netif_set_xps_queue() from cpu hotplug
> > > > callbacks.
> > > >
> > > > I can suggest a very straightforward fix for...
2018 Apr 06
0
[RFC PATCH net-next v5 3/4] virtio_net: Extend virtio to use VF datapath when available
...pass_netdev_ops);
>> + if (!virtnet_bypass)
>> + return -ENOMEM;
> If CONFIG_NET_BYPASS is undefined, you will always return -ENOMEM here.
Will fix.
>
>
>> +
>> ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN, "virtio/net:online",
>> virtnet_cpu_online,
>> virtnet_cpu_down_prep);
>> @@ -3010,12 +3617,14 @@ static __init int virtio_net_driver_init(void)
>> ret = register_virtio_driver(&virtio_net_driver);
>> if (ret)
>> goto err_virtio;
>> +
>> return 0;
>> err_virtio:
>...
2018 Apr 06
2
[RFC PATCH net-next v5 3/4] virtio_net: Extend virtio to use VF datapath when available
...p;virtnet_bypass_ops,
>+ &virtnet_bypass_netdev_ops);
>+ if (!virtnet_bypass)
>+ return -ENOMEM;
If CONFIG_NET_BYPASS is undefined, you will always return -ENOMEM here.
>+
> ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN, "virtio/net:online",
> virtnet_cpu_online,
> virtnet_cpu_down_prep);
>@@ -3010,12 +3617,14 @@ static __init int virtio_net_driver_init(void)
> ret = register_virtio_driver(&virtio_net_driver);
> if (ret)
> goto err_virtio;
>+
> return 0;
> err_virtio:
> cpuhp_remove_multi_state(CPUHP_V...
2018 Apr 06
2
[RFC PATCH net-next v5 3/4] virtio_net: Extend virtio to use VF datapath when available
...p;virtnet_bypass_ops,
>+ &virtnet_bypass_netdev_ops);
>+ if (!virtnet_bypass)
>+ return -ENOMEM;
If CONFIG_NET_BYPASS is undefined, you will always return -ENOMEM here.
>+
> ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN, "virtio/net:online",
> virtnet_cpu_online,
> virtnet_cpu_down_prep);
>@@ -3010,12 +3617,14 @@ static __init int virtio_net_driver_init(void)
> ret = register_virtio_driver(&virtio_net_driver);
> if (ret)
> goto err_virtio;
>+
> return 0;
> err_virtio:
> cpuhp_remove_multi_state(CPUHP_V...
2018 Apr 05
0
[RFC PATCH net-next v5 3/4] virtio_net: Extend virtio to use VF datapath when available
...init int virtio_net_driver_init(void)
{
int ret;
+ virtnet_bypass = bypass_register_driver(&virtnet_bypass_ops,
+ &virtnet_bypass_netdev_ops);
+ if (!virtnet_bypass)
+ return -ENOMEM;
+
ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN, "virtio/net:online",
virtnet_cpu_online,
virtnet_cpu_down_prep);
@@ -3010,12 +3617,14 @@ static __init int virtio_net_driver_init(void)
ret = register_virtio_driver(&virtio_net_driver);
if (ret)
goto err_virtio;
+
return 0;
err_virtio:
cpuhp_remove_multi_state(CPUHP_VIRT_NET_DEAD);
err_dead:
cpuhp_re...
2018 Apr 05
6
[RFC PATCH net-next v5 0/4] Enable virtio_net to act as a backup for a passthru device
The main motivation for this patch is to enable cloud service providers
to provide an accelerated datapath to virtio-net enabled VMs in a
transparent manner with no/minimal guest userspace changes. This also
enables hypervisor controlled live migration to be supported with VMs that
have direct attached SR-IOV VF devices.
Patch 1 introduces a new feature bit VIRTIO_NET_F_BACKUP that can be
used