* [patch 5/6] epoll keyed wakeups v2 - make eventfd use keyed wakeups
@ 2009-02-01 20:04 Davide Libenzi
0 siblings, 0 replies; only message in thread
From: Davide Libenzi @ 2009-02-01 20:04 UTC (permalink / raw)
To: Linux Kernel Mailing List
Cc: Andrew Morton, Linus Torvalds, Alan Cox, Ingo Molnar, David Miller
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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2009-02-01 20:04 [patch 5/6] epoll keyed wakeups v2 - make eventfd use keyed wakeups Davide Libenzi
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