linux-kernel - Re: [PATCH] ASoC: dapm: Export new 'graph.dot' file in debugfs

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Date:   Mon, 22 Aug 2022 17:10:41 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Martin Povišer <povik+lin@...ebit.org>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        Richard Fitzgerald <rf@...nsource.cirrus.com>
Subject: Re: [PATCH] ASoC: dapm: Export new 'graph.dot' file in debugfs

On Mon, Aug 22, 2022 at 03:11:48PM +0200, Martin Povišer wrote:
> > On 22. 8. 2022, at 15:04, Mark Brown <broonie@...nel.org> wrote:
> > On Mon, Aug 22, 2022 at 02:38:09PM +0200, Martin Povišer wrote:

> >> simply having a ‘graph.dot’ at hand, especially since it requires
> >> little code. (Although sure there’s the danger of it growing.)

> > I'm also worried about people going in and wanting other more tool
> > specific formats adding, if we didn't have anything at all it'd be one
> > thing but we do have something.

> Sure, although I would argue DOT is by a large margin the standard
> format to represent graphs in.

Well, the debugfs stuff there is more a general tool for introspecting
the current DAPM state than it is indended to draw a pretty picture.
When I wrote it the scale of the devices I was working with was such
that I'm not usre a full graph would've been terribly useful, and
there's even larger devices since then (though also a lot of systems
like yours which do use very much smaller devices).

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