Commit 2b13af8a authored by Eric Dumazet's avatar Eric Dumazet Committed by Jakub Kicinski
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net: avoid dirtying sk->sk_napi_id 



sk_napi_id is located in a cache line that can be kept read mostly.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Acked-by: default avatarSoheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent ef57c161

include/net/busy_poll.h

+2 −1
Original line number Diff line number Diff line
@@ -130,6 +130,7 @@ static inline void skb_mark_napi_id(struct sk_buff *skb, 
static inline void sk_mark_napi_id(struct sock *sk, const struct sk_buff *skb)

{

#ifdef CONFIG_NET_RX_BUSY_POLL

	if (unlikely(READ_ONCE(sk->sk_napi_id) != skb->napi_id))

		WRITE_ONCE(sk->sk_napi_id, skb->napi_id);

#endif

	sk_rx_queue_set(sk, skb);