linux-kernel - Re: [PATCH] driver-core: devtmpfs - driver core maintained /dev tmpfs

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Message-ID: <20090501141846.4b833700@lxorguk.ukuu.org.uk>
Date:	Fri, 1 May 2009 14:18:46 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Kay Sievers <kay.sievers@...y.org>
Cc:	Greg KH <greg@...ah.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Jan Blunck <jblunck@...e.de>
Subject: Re: [PATCH] driver-core: devtmpfs - driver core maintained /dev
 tmpfs

> No tool ever has a chance to get to the information only available at
> early kernel init. All such tools will need to "replay" what the
> kernel already did. This is intended to save us from doing this, and
> retain the information which is there, but lost at the moment the
> tools have the first chance to run.

Serious question - which is the better problem to fix ?

> It's not about a sucking tool, its just impossible. And there is no
> space wasted, it's a single string for a very few subsystems, an
> nothing is stored per device.

Plus code plus tmpfs nodes (the latter are not quite free because you
create unneeded ones versus udev but I agree that is noise for most users)
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