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Date: Mon, 31 Aug 2009 07:28:53 +0200
From: Andrew Lunn <andrew@lunn.ch>
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Subject: Re: [B.A.T.M.A.N.] [patch] adding subgraph-feature to vis-output	in
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To: The list for a Better Approach To Mobile Ad-hoc Networking <b.a.t.m.a.n@lists.open-mesh.net>

Hi Linus, Simon

One of the things on the TODO list for mainline is to strip out all
the graphvis/JSON formatting done by the kernel and put it into user
space, probably batctl, or another standalone tool, or maybe even a
little library...

Why:

1) No other file in /proc does any special formatting.
2) What happens when one tool wants graphvis and another JSON, at the same time?
3) What happens when you want a third, forth, fifth format etc...

Are either of you interested on working on this? 

I guess the first step is to design a file format for vis in proc.  I
would suggest space separated values. Maybe one line per
vis_into_entry? I would also suggest the quality value is 0-255, not a
real number. User space, which has float support, can then turn it
into a float if need be.

     Andrew