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| author | Sven Eckelmann <sven.eckelmann@gmx.de> | 2010-11-21 23:55:56 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-11-29 19:09:12 (GMT) |
| commit | 51f3d8a27c1a1ac6aced25ea93fc5c0520e9256c (patch) | |
| tree | 1e0c1335745d82561754a82d6649c6cb255712e8 /drivers/staging/batman-adv/routing.c | |
| parent | 1341a00ad356dfb21978ce4e5e979024558042d2 (diff) | |
| download | linux-fsl-qoriq-51f3d8a27c1a1ac6aced25ea93fc5c0520e9256c.tar.xz | |
Staging: batman-adv: Remove hashdata_compare_cb from hash
Function pointers cannot be inlined by a compiler and thus always has
the overhead of an call. hashdata_compare_cb's are one of the most often
called function pointers and its overhead must kept relative low.
As first step, every function which uses this function pointer takes it
as parameter instead of storing it inside the hash abstraction
structure.
This not generate any performance gain right now. The called functions
must also be able to be inlined by the calling functions to enable
inlining of the function pointer.
Reported-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/batman-adv/routing.c')
| -rw-r--r-- | drivers/staging/batman-adv/routing.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/staging/batman-adv/routing.c b/drivers/staging/batman-adv/routing.c index 1b35486..bb0bd78 100644 --- a/drivers/staging/batman-adv/routing.c +++ b/drivers/staging/batman-adv/routing.c @@ -811,6 +811,7 @@ static int recv_my_icmp_packet(struct bat_priv *bat_priv, /* get routing information */ spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash, + compare_orig, icmp_packet->orig)); ret = NET_RX_DROP; @@ -873,7 +874,8 @@ static int recv_icmp_ttl_exceeded(struct bat_priv *bat_priv, /* get routing information */ spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); orig_node = ((struct orig_node *) - hash_find(bat_priv->orig_hash, icmp_packet->orig)); + hash_find(bat_priv->orig_hash, compare_orig, + icmp_packet->orig)); ret = NET_RX_DROP; if ((orig_node != NULL) && @@ -967,7 +969,8 @@ int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if) /* get routing information */ spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); orig_node = ((struct orig_node *) - hash_find(bat_priv->orig_hash, icmp_packet->dst)); + hash_find(bat_priv->orig_hash, compare_orig, + icmp_packet->dst)); if ((orig_node != NULL) && (orig_node->router != NULL)) { @@ -1038,7 +1041,7 @@ struct neigh_node *find_router(struct bat_priv *bat_priv, router_orig->orig, ETH_ALEN) == 0) { primary_orig_node = router_orig; } else { - primary_orig_node = hash_find(bat_priv->orig_hash, + primary_orig_node = hash_find(bat_priv->orig_hash, compare_orig, router_orig->primary_addr); if (!primary_orig_node) @@ -1144,7 +1147,8 @@ int route_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if, /* get routing information */ spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); orig_node = ((struct orig_node *) - hash_find(bat_priv->orig_hash, unicast_packet->dest)); + hash_find(bat_priv->orig_hash, compare_orig, + unicast_packet->dest)); router = find_router(bat_priv, orig_node, recv_if); @@ -1290,7 +1294,8 @@ int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if) spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); orig_node = ((struct orig_node *) - hash_find(bat_priv->orig_hash, bcast_packet->orig)); + hash_find(bat_priv->orig_hash, compare_orig, + bcast_packet->orig)); if (orig_node == NULL) { spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); |