af_unix: use keyed wakeups
Instead of wakeup all sleepers, use wake_up_interruptible_sync_poll() to
wakeup only ones interested into writing the socket.
This patch is a specialization of commit 37e5540b3c9d (epoll keyed
wakeups: make sockets use keyed wakeups).
On a test program provided by Alan Crequy :
Before:
real 0m3.101s
user 0m0.000s
sys 0m6.104s
After:
real 0m0.211s
user 0m0.000s
sys 0m0.208s
Reported-by: Alban Crequy <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Cc: Davide Libenzi <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
1 file changed
