[SOCK]: Drop per-proto inuse init and fre functions (v2).

Constructive part of the set is finished here. We have to remove the
pcounter, so start with its init and free functions.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/sock.h

@@ -640,31 +640,13 @@ static inline void sk_refcnt_debug_release(const struct sock *sk)
 # define REF_PROTO_INUSE(NAME) PCOUNTER_MEMBER_INITIALIZER(NAME, .inuse)
 /* Called with local bh disabled */
 extern void sock_prot_inuse_add(struct proto *prot, int inc);
-
-static inline int sock_prot_inuse_init(struct proto *proto)
-{
-	return pcounter_alloc(&proto->inuse);
-}
-
 extern int sock_prot_inuse_get(struct proto *proto);
-
-static inline void sock_prot_inuse_free(struct proto *proto)
-{
-	pcounter_free(&proto->inuse);
-}
 #else
 # define DEFINE_PROTO_INUSE(NAME)
 # define REF_PROTO_INUSE(NAME)
 static void inline sock_prot_inuse_add(struct proto *prot, int inc)
 {
 }
-static int inline sock_prot_inuse_init(struct proto *proto)
-{
-	return 0;
-}
-static void inline sock_prot_inuse_free(struct proto *proto)
-{
-}
 #endif
 
 

net/core/sock.c

@@ -1999,19 +1999,14 @@ int proto_register(struct proto *prot, int alloc_slab)
 	char *request_sock_slab_name = NULL;
 	char *timewait_sock_slab_name;
 
-	if (sock_prot_inuse_init(prot) != 0) {
-		printk(KERN_CRIT "%s: Can't alloc inuse counters!\n", prot->name);
-		goto out;
-	}
-
 	if (alloc_slab) {
 		prot->slab = kmem_cache_create(prot->name, prot->obj_size, 0,
 					       SLAB_HWCACHE_ALIGN, NULL);
 
 		if (prot->slab == NULL) {
 			printk(KERN_CRIT "%s: Can't create sock SLAB cache!\n",
 			       prot->name);
-			goto out_free_inuse;
+			goto out;
 		}
 
 		if (prot->rsk_prot != NULL) {
@@ -2070,8 +2065,6 @@ int proto_register(struct proto *prot, int alloc_slab)
 out_free_sock_slab:
 	kmem_cache_destroy(prot->slab);
 	prot->slab = NULL;
-out_free_inuse:
-	sock_prot_inuse_free(prot);
 out:
 	return -ENOBUFS;
 }
@@ -2085,8 +2078,6 @@ void proto_unregister(struct proto *prot)
 	list_del(&prot->node);
 	write_unlock(&proto_list_lock);
 
-	sock_prot_inuse_free(prot);
-
 	if (prot->slab != NULL) {
 		kmem_cache_destroy(prot->slab);
 		prot->slab = NULL;