linux-kernel - Re: [PATCH] tty: Add sysfs symlink for console name->tty device

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Message-ID: <53112C8B.2000504@hurleysoftware.com>
Date:	Fri, 28 Feb 2014 19:40:43 -0500
From:	Peter Hurley <peter@...leysoftware.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	Jiri Slaby <jslaby@...e.cz>, linux-kernel@...r.kernel.org,
	Ray Strode <halfline@...il.com>, Kay Sievers <kay@...y.org>,
	David Herrmann <dh.herrmann@...il.com>,
	Lennart Poettering <lennart@...ttering.net>,
	Werner Fink <werner@...e.de>
Subject: Re: [PATCH] tty: Add sysfs symlink for console name->tty device

On 02/28/2014 07:35 PM, Greg Kroah-Hartman wrote:
> On Wed, Feb 26, 2014 at 09:40:51AM -0500, Peter Hurley wrote:
>> Enable a user-space process to discover the underlying tty device
>> for a console, if one exists, and when the tty device is later
>> created or destroyed.
>
> What userspace code has been tested with this change?

Every existing distro + personal copies going back 42 versions.
No breakage. ;)

>> Add sysfs symlinks for registered consoles to their respective
>> devices in [sys/class,sys/devices/virtual]/tty/console.
>> Scan consoles at tty device (un)registration to handle deferred
>> console<->device (un)binding.
>
> I don't understand, what does userspace now look like in sysfs?  Do we
> need Documentation/ABI/ updates here?
>
> And David has fixed up his original patch, which doesn't break plymouth,
> and I'll be taking that, so I don't see why this patch is needed.

Ok. I tried.

Regards,
Peter Hurley

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