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[NET]: uninline dev_alloc_skb, de-bloats a lot

Browse source 
Allyesconfig (v2.6.24-mm1):

-23668  392 funcs, 104 +, 23772 -, diff: -23668 --- dev_alloc_skb

Without many debug CONFIGs (v2.6.25-rc2-mm1):

-12178  382 funcs, 157 +, 12335 -, diff: -12178 --- dev_alloc_skb
dev_alloc_skb                 |  +37

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ilpo Järvinen 2008-03-27 17:51:31 -07:00 committed by David S. Miller
parent 6be8ac2fdc
commit f58518e678
2 changed files with 19 additions and 16 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
include/linux/skbuff.h
View file

@ -1272,22 +1272,7 @@ static inline struct sk_buff *__dev_alloc_skb(unsigned int length,
return skb;
}
/**
* dev_alloc_skb - allocate an skbuff for receiving
* @length: length to allocate
*
* Allocate a new &sk_buff and assign it a usage count of one. The
* buffer has unspecified headroom built in. Users should allocate
* the headroom they think they need without accounting for the
* built in space. The built in space is used for optimisations.
*
* %NULL is returned if there is no free memory. Although this function
* allocates memory it can be called from an interrupt.
*/
static inline struct sk_buff *dev_alloc_skb(unsigned int length)
{
return __dev_alloc_skb(length, GFP_ATOMIC);
}
extern struct sk_buff *dev_alloc_skb(unsigned int length);
extern struct sk_buff *__netdev_alloc_skb(struct net_device *dev,
unsigned int length, gfp_t gfp_mask);

18
net/core/skbuff.c
View file

@ -263,6 +263,24 @@ struct sk_buff *__netdev_alloc_skb(struct net_device *dev,
return skb;
}
/**
* dev_alloc_skb - allocate an skbuff for receiving
* @length: length to allocate
*
* Allocate a new &sk_buff and assign it a usage count of one. The
* buffer has unspecified headroom built in. Users should allocate
* the headroom they think they need without accounting for the
* built in space. The built in space is used for optimisations.
*
* %NULL is returned if there is no free memory. Although this function
* allocates memory it can be called from an interrupt.
*/
struct sk_buff *dev_alloc_skb(unsigned int length)
{
return __dev_alloc_skb(length, GFP_ATOMIC);
}
EXPORT_SYMBOL(dev_alloc_skb);
static void skb_drop_list(struct sk_buff **listp)
{
struct sk_buff *list = *listp;