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| author |   Eric Dumazet <edumazet@google.com> | 2015-11-18 06:31:03 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-11-18 16:17:42 -0500 |
| commit | 93d05d4a320cb16712bb3d57a9658f395d8cecb9 (patch) | |
| tree | 65c0340484128f9e5d9e732b92bc22b458faae94 /drivers/net/virtio_net.c | |
| parent | net: napi_hash_del() returns a boolean status (diff) | |
| download | linux-dev-93d05d4a320cb16712bb3d57a9658f395d8cecb9.tar.xz linux-dev-93d05d4a320cb16712bb3d57a9658f395d8cecb9.zip | |
net: provide generic busy polling to all NAPI drivers
NAPI drivers no longer need to observe a particular protocol
to benefit from busy polling (CONFIG_NET_RX_BUSY_POLL=y)
napi_hash_add() and napi_hash_del() are automatically called
from core networking stack, respectively from
netif_napi_add() and netif_napi_del()
This patch depends on free_netdev() and netif_napi_del() being
called from process context, which seems to be the norm.
Drivers might still prefer to call napi_hash_del() on their
own, since they might combine all the rcu grace periods into
a single one, knowing their NAPI structures lifetime, while
core networking stack has no idea of a possible combining.
Once this patch proves to not bring serious regressions,
we will cleanup drivers to either remove napi_hash_del()
or provide appropriate rcu grace periods combining.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/virtio_net.c')
| -rw-r--r-- | drivers/net/virtio_net.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index d1d14cecf450..b1ae4cbf2453 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1610,7 +1610,6 @@ static int virtnet_alloc_queues(struct virtnet_info *vi) vi->rq[i].pages = NULL; netif_napi_add(vi->dev, &vi->rq[i].napi, virtnet_poll, napi_weight); - napi_hash_add(&vi->rq[i].napi); sg_init_table(vi->rq[i].sg, ARRAY_SIZE(vi->rq[i].sg)); ewma_pkt_len_init(&vi->rq[i].mrg_avg_pkt_len); |