[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>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 5aec5a5e5f16..e811034b1b01 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -92,7 +92,7 @@ void raw_hash_sk(struct sock *sk, struct raw_hashinfo *h)
 
         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 @@ void raw_unhash_sk(struct sock *sk, struct raw_hashinfo *h)
 {
         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);