Commit 39510888 authored by Davide Libenzi's avatar Davide Libenzi Committed by Linus Torvalds

epoll keyed wakeups: make eventfd use keyed wakeups

Introduce keyed event wakeups inside the eventfd code.
Signed-off-by: 's avatarDavide Libenzi <davidel@xmailserver.org>
Cc: 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: 's avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: 's avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 2dfa4eea
......@@ -51,7 +51,7 @@ int eventfd_signal(struct file *file, int n)
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 *file, char __user *buf, size_t count,
ucnt = (ctx->flags & EFD_SEMAPHORE) ? 1 : ctx->count;
ctx->count -= ucnt;
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 *file, const char __user *buf, size_t c
if (likely(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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