linux-kernel - Re: [PATCH 0/2] eventfd: new EFD

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Message-ID: <alpine.DEB.2.00.0908201042100.14844@makko.or.mcafeemobile.com>
Date:	Thu, 20 Aug 2009 10:44:27 -0700 (PDT)
From:	Davide Libenzi <davidel@...ilserver.org>
To:	Avi Kivity <avi@...hat.com>
cc:	"Michael S. Tsirkin" <mst@...hat.com>, gleb@...hat.com,
	kvm@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/2] eventfd: new EFD_STATE flag

On Thu, 20 Aug 2009, Avi Kivity wrote:

> On 08/20/2009 07:20 PM, Davide Libenzi wrote:
> > 
> > I briefly looked at this while in vacation, although I did not reply
> > hoping the horrible feeling about this code would go away.
> > It didn't.
> > I find this to be an ugly and ad-hoc multiplexing of eventfd with added
> > functionalities of questionable general use.
> > I'm pretty sure you can do better on KVM side, to solve the problem w/out
> > littering eventfd.
> > 
> >    
> 
> While we could argue about this my feeling is that we should drop this, at
> least until we can quantify what benefit it has and whether there are any
> Davide-acceptable alternatives.

I really didn't mean to be harsh, but seriously, we cannot just have a 
Multiplexing Feast over eventfd, with one-time users.


- Davide


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