[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/core/sock.c b/net/core/sock.c
index 3d7757e..1c4b1cd 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1913,7 +1913,7 @@
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 @@
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 @@
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);