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net: Fix rxq ref counting

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The rx->count reference is used to track reference counts to the
number of rx-queue kobjects created for the device.  This patch
eliminates initialization of the counter in netif_alloc_rx_queues
and instead increments the counter each time a kobject is created.
This is now symmetric with the decrement that is done when an object is
released.

Signed-off-by: Tom Herbert <therbert@google.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert 2010-10-07 10:09:10 +00:00 committed by David S. Miller
parent a131d82266
commit 4315d834c1
2 changed files with 2 additions and 1 deletions
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1
net/core/dev.c
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@ -5024,7 +5024,6 @@ static int netif_alloc_rx_queues(struct net_device *dev)
return -ENOMEM;
}
dev->_rx = rx;
atomic_set(&rx->count, count);
/*
* Set a pointer to first element in the array which holds the

2
net/core/net-sysfs.c
View File

@ -726,6 +726,7 @@ static struct kobj_type rx_queue_ktype = {
static int rx_queue_add_kobject(struct net_device *net, int index)
{
struct netdev_rx_queue *queue = net->_rx + index;
struct netdev_rx_queue *first = queue->first;
struct kobject *kobj = &queue->kobj;
int error = 0;
@ -738,6 +739,7 @@ static int rx_queue_add_kobject(struct net_device *net, int index)
}
kobject_uevent(kobj, KOBJ_ADD);
atomic_inc(&first->count);
return error;
}