[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, 3 insertions, 3 deletions

diff --git a/net/core/sock.c b/net/core/sock.c
index 3d7757ee2fc8..1c4b1cd16d65 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1913,7 +1913,7 @@ int proto_register(struct proto *prot, int alloc_slab)
         char *request_sock_slab_name = NULL;
         char *timewait_sock_slab_name;
 
-        if (pcounter_alloc(&prot->inuse) != 0) {
+        if (sock_prot_inuse_init(prot) != 0) {
                 printk(KERN_CRIT "%s: Can't alloc inuse counters!\n", prot->name);
                 goto out;
         }
@@ -1984,7 +1984,7 @@ out_free_sock_slab:
         kmem_cache_destroy(prot->slab);
         prot->slab = NULL;
 out_free_inuse:
-        pcounter_free(&prot->inuse);
+        sock_prot_inuse_free(prot);
 out:
         return -ENOBUFS;
 }
@@ -1997,7 +1997,7 @@ void proto_unregister(struct proto *prot)
         list_del(&prot->node);
         write_unlock(&proto_list_lock);
 
-        pcounter_free(&prot->inuse);
+        sock_prot_inuse_free(prot);
 
         if (prot->slab != NULL) {
                 kmem_cache_destroy(prot->slab);