diff options
| author | Eric Dumazet <dada1@cosmosbay.com> | 2008-01-08 23:54:43 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 15:01:06 -0800 |
| commit | f0b5a0dcf125ce43855961ef4f965a91112bea23 (patch) | |
| tree | bf8f14b2e7d7614a26a523929a515f1ee2052222 | |
| parent | 4cec72c890d3a465eed08c24a4a2bfe25650318f (diff) | |
| download | linux-stable-f0b5a0dcf125ce43855961ef4f965a91112bea23.tar.gz linux-stable-f0b5a0dcf125ce43855961ef4f965a91112bea23.tar.bz2 linux-stable-f0b5a0dcf125ce43855961ef4f965a91112bea23.zip | |
[VLAN]: Avoid expensive divides
We can avoid divides (as seen with CONFIG_CC_OPTIMIZE_FOR_SIZE=y on
x86) changing vlan_group_get_device()/vlan_group_set_device() id
parameter from signed to unsigned.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/if_vlan.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h index 976d4b1067d1..4562105fdb2b 100644 --- a/include/linux/if_vlan.h +++ b/include/linux/if_vlan.h @@ -81,14 +81,16 @@ struct vlan_group { struct rcu_head rcu; }; -static inline struct net_device *vlan_group_get_device(struct vlan_group *vg, int vlan_id) +static inline struct net_device *vlan_group_get_device(struct vlan_group *vg, + unsigned int vlan_id) { struct net_device **array; array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN]; return array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN]; } -static inline void vlan_group_set_device(struct vlan_group *vg, int vlan_id, +static inline void vlan_group_set_device(struct vlan_group *vg, + unsigned int vlan_id, struct net_device *dev) { struct net_device **array; |