From 1d2077ac0165c0d173a2255e37cf4dc5033d92c7 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 2 May 2016 10:56:27 -0700 Subject: net: add __sock_wfree() helper Hosts sending lot of ACK packets exhibit high sock_wfree() cost because of cache line miss to test SOCK_USE_WRITE_QUEUE We could move this flag close to sk_wmem_alloc but it is better to perform the atomic_sub_and_test() on a clean cache line, as it avoid one extra bus transaction. skb_orphan_partial() can also have a fast track for packets that either are TCP acks, or already went through another skb_orphan_partial() Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/sock.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/net/sock.h') diff --git a/include/net/sock.h b/include/net/sock.h index 1dbb1f9f7c1b..45f5b492c658 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1445,6 +1445,7 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority); struct sk_buff *sock_wmalloc(struct sock *sk, unsigned long size, int force, gfp_t priority); +void __sock_wfree(struct sk_buff *skb); void sock_wfree(struct sk_buff *skb); void skb_orphan_partial(struct sk_buff *skb); void sock_rfree(struct sk_buff *skb); -- cgit v1.2.3