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[VLAN]: Avoid a 4-order allocation.

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This patch splits the vlan_group struct into a multi-allocated struct. On
x86_64, the size of the original struct is a little more than 32KB, causing
a 4-order allocation, which is prune to problems caused by buddy-system
external fragmentation conditions.

I couldn't just use vmalloc() because vfree() cannot be called in the
softirq context of the RCU callback.

Signed-off-by: Dan Aloni <da-x@monatomic.org>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Aloni
2007-03-02 20:44:51 -08:00
committed by David S. Miller
parent b5284e5aa9
commit 5c15bdec5c
22 changed files with 102 additions and 80 deletions
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drivers/net/ixgb/ixgb_main.c
+2 -3
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@@ -2213,8 +2213,7 @@ ixgb_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
ixgb_irq_disable(adapter);
if(adapter->vlgrp)
adapter->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(adapter->vlgrp, vid, NULL);
ixgb_irq_enable(adapter);
@@ -2234,7 +2233,7 @@ ixgb_restore_vlan(struct ixgb_adapter *adapter)
if(adapter->vlgrp) {
uint16_t vid;
for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
if(!adapter->vlgrp->vlan_devices[vid])
if(!vlan_group_get_device(adapter->vlgrp, vid))
continue;
ixgb_vlan_rx_add_vid(adapter->netdev, vid);
}