linux-kernel - Re: [PATCH 0/5][RFC] Physical PCI slot objects

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Message-ID: <20071114150801.GH17145@one.firstfloor.org>
Date:	Wed, 14 Nov 2007 16:08:01 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Matthew Wilcox <matthew@....cx>
Cc:	Andi Kleen <andi@...stfloor.org>, Greg KH <greg@...ah.com>,
	Alex Chiang <achiang@...com>, gregkh@...e.de,
	kristen.c.accardi@...el.com, lenb@...nel.org,
	richard.jones2@...com, linux-kernel@...r.kernel.org,
	linux-pci@...ey.karlin.mff.cuni.cz,
	pcihpd-discuss@...ts.sourceforge.net, linux-acpi@...r.kernel.org
Subject: Re: [PATCH 0/5][RFC] Physical PCI slot objects

On Wed, Nov 14, 2007 at 08:00:25AM -0700, Matthew Wilcox wrote:
> On Wed, Nov 14, 2007 at 03:35:33PM +0100, Andi Kleen wrote:
> > It becomes much more when someone does a find /sys. dentries are 
> > expensive. They eventually can get pruned again, but it's still
> > costly to do that.
> 
> Again, if this is a big concern for you, there are better places to look
> at for savings.

Whoever is proposing a feature has the burden to justify that
its usefulness is larger than the overhead/cost it adds.

Doesn't seem to be the case with this one so far.

And in general ignoring overhead in new features is a pretty sad
approach. Big bloat does come in small steps with each new feature.

-Andi
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