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sched, net: socket wakeups are sync

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'sync' wakeups are a hint towards the scheduler that (certain)
networking related wakeups likely create coupling between tasks.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-03-19 01:44:24 +01:00
parent f48273860e
commit 6f3d09291b
1 changed files with 2 additions and 2 deletions
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4
net/core/sock.c
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@ -1621,7 +1621,7 @@ static void sock_def_readable(struct sock *sk, int len)
{
read_lock(&sk->sk_callback_lock);
if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
wake_up_interruptible(sk->sk_sleep);
wake_up_interruptible_sync(sk->sk_sleep);
sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
read_unlock(&sk->sk_callback_lock);
}
@ -1635,7 +1635,7 @@ static void sock_def_write_space(struct sock *sk)
*/
if ((atomic_read(&sk->sk_wmem_alloc) << 1) <= sk->sk_sndbuf) {
if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
wake_up_interruptible(sk->sk_sleep);
wake_up_interruptible_sync(sk->sk_sleep);
/* Should agree with poll, otherwise some programs break */
if (sock_writeable(sk))