linux-kernel - Re: [patch 14/22] pollfs: pollable futex

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Date:	Sun, 6 May 2007 12:54:51 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"Ulrich Drepper" <drepper@...il.com>
Cc:	"Davide Libenzi" <davidel@...ilserver.org>,
	"Davi Arnaut" <davi@...ent.com.br>,
	"Eric Dumazet" <dada1@...mosbay.com>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: [patch 14/22] pollfs: pollable futex

On Sun, 6 May 2007 00:50:47 -0700 "Ulrich Drepper" <drepper@...il.com> wrote:

> > I really do not understand your point. You're too smart to not appreciate
> > the beauty and the simmetry of objects that responds to a common interface
> > (our files, win32 handles), and that fits our existing kernel infrastructure.
> 
> You're blinded by this symmetry.  Not everything that looks like a
> good fit is a good idea.  This is one case.  Get over it, poll is not
> powerful enough to serve as the unifying event mechanism.

What is your position on the timerfd/signalfd/etc patches?

Seems to me that if we were to have fancy new event-delivery machinery
like kevent then the timerfd/signalfd work is heading in the other
direction and ultimately would prove to have been unneeded?
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