AcoSail/kernel_optimize_test
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Merge branch 'socket-space-optimizations'

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Eric Dumazet says:

====================
net: avoid some atomic ops when FASYNC is not used

We can avoid some atomic operations on sockets not using FASYNC
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2016-04-27 23:08:41 -04:00
commit 8be2748a40
1 changed files with 8 additions and 0 deletions
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8
include/net/sock.h
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@ -1940,11 +1940,19 @@ static inline unsigned long sock_wspace(struct sock *sk)
*/
static inline void sk_set_bit(int nr, struct sock *sk)
{
if ((nr == SOCKWQ_ASYNC_NOSPACE || nr == SOCKWQ_ASYNC_WAITDATA) &&
!sock_flag(sk, SOCK_FASYNC))
return;
set_bit(nr, &sk->sk_wq_raw->flags);
}
static inline void sk_clear_bit(int nr, struct sock *sk)
{
if ((nr == SOCKWQ_ASYNC_NOSPACE || nr == SOCKWQ_ASYNC_WAITDATA) &&
!sock_flag(sk, SOCK_FASYNC))
return;
clear_bit(nr, &sk->sk_wq_raw->flags);
}