diff options
| author | Benjamin LaHaise <bcrl@kvack.org> | 2006-01-03 14:10:46 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-01-03 14:10:46 -0800 |
| commit | fd19f329a32bdc4eb07885e0b3889567cfe00aa7 (patch) | |
| tree | c69943e8294cae13df6af3dc8b8c25abab8c9cfb /net/unix | |
| parent | 4947d3ef8de7b4f42aed6ea9ba689dc8fb45b5a5 (diff) | |
| download | lwn-fd19f329a32bdc4eb07885e0b3889567cfe00aa7.tar.gz lwn-fd19f329a32bdc4eb07885e0b3889567cfe00aa7.zip | |
[AF_UNIX]: Convert to use a spinlock instead of rwlock
From: Benjamin LaHaise <bcrl@kvack.org>
In af_unix, a rwlock is used to protect internal state. At least on my
P4 with HT it is faster to use a spinlock due to the simpler memory
barrier used to unlock. This patch raises bw_unix to ~690K/s.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/unix')
| -rw-r--r-- | net/unix/af_unix.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 7d3fe6aebcdb..1ddd36d50091 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -564,7 +564,7 @@ static struct sock * unix_create1(struct socket *sock) u = unix_sk(sk); u->dentry = NULL; u->mnt = NULL; - rwlock_init(&u->lock); + spin_lock_init(&u->lock); atomic_set(&u->inflight, sock ? 0 : -1); init_MUTEX(&u->readsem); /* single task reading lock */ init_waitqueue_head(&u->peer_wait); |