Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=76eb94...
Commit: 76eb946040a7b4c797979a9c22464b9a07890ba5
Parent: ffaa9c100bd75c81744a2b7800a45daba53db0eb
Author: Patrick McHardy <kaber@trash.net>
AuthorDate: Thu Jan 31 04:41:44 2008 -0800
Committer: David S. Miller <davem@davemloft.net>
CommitDate: Thu Jan 31 19:27:58 2008 -0800
[NETFILTER]: nf_conntrack: don't inline early_drop()
early_drop() is only called *very* rarely, unfortunately gcc inlines it
into the hotpath because there is only a single caller. Explicitly mark
it noinline.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/netfilter/nf_conntrack_core.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 4a2cce1..1205883 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -420,7 +420,7 @@ EXPORT_SYMBOL_GPL(nf_conntrack_tuple_taken);
/* There's a small race here where we may free a just-assured
connection. Too bad: we're in trouble anyway. */
-static int early_drop(unsigned int hash)
+static noinline int early_drop(unsigned int hash)
{
/* Use oldest entry, which is roughly LRU */
struct nf_conntrack_tuple_hash *h;
@@ -472,8 +472,8 @@ struct nf_conn *nf_conntrack_alloc(const struct nf_conntrack_tuple *orig,
/* We don't want any race condition at early drop stage */
atomic_inc(&nf_conntrack_count);
- if (nf_conntrack_max
- && atomic_read(&nf_conntrack_count) > nf_conntrack_max) {
+ if (nf_conntrack_max &&
+ unlikely(atomic_read(&nf_conntrack_count) > nf_conntrack_max)) {
unsigned int hash = hash_conntrack(orig);
if (!early_drop(hash)) {
atomic_dec(&nf_conntrack_count);
-
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