linux-kernel - Re: [PATCH] Add possibility to set /dev/tty number

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Message-ID: <20160105204745.760727c1@lxorguk.ukuu.org.uk>
Date:	Tue, 5 Jan 2016 20:47:45 +0000
From:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
To:	"Austin S. Hemmelgarn" <ahferroin7@...il.com>
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	Pierre Paul MINGOT <mingot.pierre@...il.com>, jslaby@...e.cz,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Add possibility to set /dev/tty number

> This means that not including the VT subsystem resulted in a 128k 
> reduction in runtime footprint, and having only half the number of VT's 
> resulted in a 52k reduction.  Assuming a linear correlation between the 
> number of VT's and the runtime footprint of the subsystem, that means 
> the subsystem itself incurs 26k of overhead, and each VT incurs 
> approximately 1.6k of overhead.

Doesn't seem an unreasonable value - so yes you've made an argument for
dynamically allocating the vt structures when they are first referenced.

Alan
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