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authorDavide Libenzi <davidel@xmailserver.org>2009-03-31 15:24:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-01 08:59:20 -0700
commit37e5540b3c9d838eb20f2ca8ea2eb8072271e403 (patch)
treef1788aef6d73d2334e739da7ca87f2900285c262 /net/core/sock.c
parentc0da37753695e010776ccf2200a5731e0f88a9f3 (diff)
downloadlinux-2.6.38-lt-ux500-37e5540b3c9d838eb20f2ca8ea2eb8072271e403.tar.gz
epoll keyed wakeups: make sockets use keyed wakeups
Add support for event-aware wakeups to the sockets code. Events are delivered to the wakeup target, so that epoll can avoid spurious wakeups for non-interesting events. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Cc: William Lee Irwin III <wli@movementarian.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net/core/sock.c')
-rw-r--r--net/core/sock.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/net/core/sock.c b/net/core/sock.c
index 0620046e4eb..7dbf3ffb35c 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1677,7 +1677,7 @@ static void sock_def_error_report(struct sock *sk)
{
read_lock(&sk->sk_callback_lock);
if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
- wake_up_interruptible(sk->sk_sleep);
+ wake_up_interruptible_poll(sk->sk_sleep, POLLERR);
sk_wake_async(sk, SOCK_WAKE_IO, POLL_ERR);
read_unlock(&sk->sk_callback_lock);
}
@@ -1686,7 +1686,8 @@ 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_sync(sk->sk_sleep);
+ wake_up_interruptible_sync_poll(sk->sk_sleep, POLLIN |
+ POLLRDNORM | POLLRDBAND);
sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
read_unlock(&sk->sk_callback_lock);
}
@@ -1700,7 +1701,8 @@ 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_sync(sk->sk_sleep);
+ wake_up_interruptible_sync_poll(sk->sk_sleep, POLLOUT |
+ POLLWRNORM | POLLWRBAND);
/* Should agree with poll, otherwise some programs break */
if (sock_writeable(sk))