Messages in this thread Patch in this message | | | From | Davide Libenzi <> | Date | Sun, 01 Feb 2009 12:04:23 -0800 | Subject | [patch 5/6] epoll keyed wakeups v2 - make eventfd use keyed wakeups |
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The following patch introduces keyed event wakeups inside the eventfd code.
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
- Davide
--- fs/eventfd.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
Index: linux-2.6.mod/fs/eventfd.c =================================================================== --- linux-2.6.mod.orig/fs/eventfd.c 2009-01-31 14:55:13.000000000 -0800 +++ linux-2.6.mod/fs/eventfd.c 2009-01-31 15:36:00.000000000 -0800 @@ -50,7 +50,7 @@ int eventfd_signal(struct file *file, in n = (int) (ULLONG_MAX - ctx->count); ctx->count += n; if (waitqueue_active(&ctx->wqh)) - wake_up_locked(&ctx->wqh); + wake_up_locked_poll(&ctx->wqh, POLLIN); spin_unlock_irqrestore(&ctx->wqh.lock, flags); return n; @@ -120,7 +120,7 @@ static ssize_t eventfd_read(struct file if (res > 0) { ctx->count = 0; if (waitqueue_active(&ctx->wqh)) - wake_up_locked(&ctx->wqh); + wake_up_locked_poll(&ctx->wqh, POLLOUT); } spin_unlock_irq(&ctx->wqh.lock); if (res > 0 && put_user(ucnt, (__u64 __user *) buf)) @@ -169,7 +169,7 @@ static ssize_t eventfd_write(struct file if (res > 0) { ctx->count += ucnt; if (waitqueue_active(&ctx->wqh)) - wake_up_locked(&ctx->wqh); + wake_up_locked_poll(&ctx->wqh, POLLIN); } spin_unlock_irq(&ctx->wqh.lock);
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