linux-kernel - Re: [RFC] Slab allocators: Drop support for destructors

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Message-ID: <Pine.LNX.4.64.0705101223010.10935@schroedinger.engr.sgi.com>
Date:	Thu, 10 May 2007 12:24:20 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Pekka Enberg <penberg@...helsinki.fi>
cc:	linux-kernel@...r.kernel.org, Paul Mundt <lethal@...ux-sh.org>
Subject: Re: [RFC] Slab allocators: Drop support for destructors

On Thu, 10 May 2007, Pekka Enberg wrote:

> > Or do we want to continue support destructors? If so why?
> 
> Well, constructors are on their way out too because they don't seem to
> give the performance benefit they were designed for anymore. As for
> destructors, they have been pretty useless in Linux for a long time
> now and we really don't do much "complex initialization" that requires
> undo (releasing resources).

Well I am not too sure about removing constructors. Andrew's test seems to 
show some benefit. That is just one test though. We need more. I do not 
like constructors either but if performance tests show regressions then we 
need to keep them.

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