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Commit 7dda7128 authored by Christoph Hellwig's avatar Christoph Hellwig
Browse files

timerfd: add support for keyed wakeups 



This prepares timerfd for use with aio poll.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Tested-by: default avatarAvi Kivity <avi@scylladb.com>
parent 1ffaddd0

fs/timerfd.c

+3 −3
Original line number Diff line number Diff line
@@ -66,7 +66,7 @@ static void timerfd_triggered(struct timerfd_ctx *ctx) 
	spin_lock_irqsave(&ctx->wqh.lock, flags);

	ctx->expired = 1;

	ctx->ticks++;

	wake_up_locked(&ctx->wqh);

	wake_up_locked_poll(&ctx->wqh, EPOLLIN);

	spin_unlock_irqrestore(&ctx->wqh.lock, flags);

}
@@ -107,7 +107,7 @@ void timerfd_clock_was_set(void) 
		if (ctx->moffs != moffs) {

			ctx->moffs = KTIME_MAX;

			ctx->ticks++;

			wake_up_locked(&ctx->wqh);

			wake_up_locked_poll(&ctx->wqh, EPOLLIN);

		}

		spin_unlock_irqrestore(&ctx->wqh.lock, flags);

	}
@@ -345,7 +345,7 @@ static long timerfd_ioctl(struct file *file, unsigned int cmd, unsigned long arg 
		spin_lock_irq(&ctx->wqh.lock);

		if (!timerfd_canceled(ctx)) {

			ctx->ticks = ticks;

			wake_up_locked(&ctx->wqh);

			wake_up_locked_poll(&ctx->wqh, EPOLLIN);

		} else

			ret = -ECANCELED;

		spin_unlock_irq(&ctx->wqh.lock);