[NET]: prot_inuse cleanups and optimizations
1) Cleanups (all functions are prefixed by sock_prot_inuse)
sock_prot_inc_use(prot) -> sock_prot_inuse_add(prot,-1)
sock_prot_dec_use(prot) -> sock_prot_inuse_add(prot,-1)
sock_prot_inuse() -> sock_prot_inuse_get()
New functions :
sock_prot_inuse_init() and sock_prot_inuse_free() to abstract pcounter use.
2) if CONFIG_PROC_FS=n, we can zap 'inuse' member from "struct proto",
since nobody wants to read the inuse value.
This saves 1372 bytes on i386/SMP and some cpu cycles.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 5aec5a5..e811034 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -92,7 +92,7 @@
write_lock_bh(&h->lock);
sk_add_node(sk, head);
- sock_prot_inc_use(sk->sk_prot);
+ sock_prot_inuse_add(sk->sk_prot, 1);
write_unlock_bh(&h->lock);
}
EXPORT_SYMBOL_GPL(raw_hash_sk);
@@ -101,7 +101,7 @@
{
write_lock_bh(&h->lock);
if (sk_del_node_init(sk))
- sock_prot_dec_use(sk->sk_prot);
+ sock_prot_inuse_add(sk->sk_prot, -1);
write_unlock_bh(&h->lock);
}
EXPORT_SYMBOL_GPL(raw_unhash_sk);