linux-kernel - Re: Visualizing linux kernel datastructures

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Message-ID: <20160725114635.32210732@lwn.net>
Date:	Mon, 25 Jul 2016 11:46:35 -0600
From:	Jonathan Corbet <corbet@....net>
To:	Charlemagne Lasse <charlemagnelasse@...il.com>
Cc:	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Visualizing linux kernel datastructures

On Mon, 25 Jul 2016 16:56:46 +0200
Charlemagne Lasse <charlemagnelasse@...il.com> wrote:

> So my questions would be:
> 
> 1. is there a standard (machine readable?) how to correctly document
> (kernel-doc?) in the code if a struct list_head is the head/root of a
> list or the anchor of the item in a list?
> 
> 2. is there a standard (machine readable?) how to correctly document
> the type of objects stored in a list/hlist/rbtree?
> 
> 3. is there already some kind of tool to visualize data structures
> from the Linux kernel which supports list/hlist/rbtree and shows it in
> the diagram (image, graphviz, ...) as 1:n relation?

As far as I know, the answer to all three questions would be "no."
Confusion about such things has not generally been a problem with the
code, so there hasn't been a push for such tools (or a person motivated to
create them).

Thanks,

jon