Re: [patch 00/13] devtmpfs patches

[Fabio Comolli]

Hi.

On Sat, May 9, 2009 at 4:37 PM, Greg KH <greg@xxxxxxxxx> wrote:
> Here's the latest version of the devtmpfs patch, broken up into 13
> different patches to make it easier to review and merge properly.
>
> This series does the following:
> Â- creates a new callback within the driver core to allow drivers and
> Â Âsubsystems to provide a name for their subsystem to properly reflect
> Â Âwhat userspace should use for their device nodes. ÂThis allows for
> Â Âthings like the sound/ and input/ subdirectories to be properly told
> Â Âto userspace. ÂNote these names and subdirectories are the ones that
> Â Âhave been used for years, and are standardized across all
> Â Âdistributions and synced up with the LANANA naming scheme which is
> Â Âspecified by LSB. ÂWe aren't creating anything new here.
> Â- fills in the callbacks by the various subsystems that need to define
> Â Âit, including the misc device layer. ÂThis is the majority of the
> Â Âpatches in the series.
> Â- adds the devtmpfs core code. ÂDescription of what this is, why it is
> Â Âneeded, and how it works is within this patch.
>
> All of these patches have been tested for a number of weeks now in
> SuSE's kernel trees and have proved to increase boot time a measurable
> ammount (a few seconds at the very least)

Well, guess you meant the opposite ;-)


> on both traditional systems
> (servers / desktops) as well as on netbooks using a non-SuSE based
> userspace infrastructure.
>
> This feature also allows rescue systems to work properly by allowing
> systems to boot into /bin/bash with full access to all of their device
> nodes. ÂIt is also a big win on embedded systems with no local users yet
> they need to provide dynamic names as their hardware configuration can
> be changed by external forces.
>
> All of the previous objections to this patch series seems to have been
> properly addressed, but as always, comments are welcome, just make them
> substantial please :)
>
> These patches are now in the driver-core git tree of quilt patches.
>
> thanks,
>
> greg k-h
>
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