linux-kernel - Re: [for-next][12/26] Documentation: bootconfig: Add a doc for extended boot config

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Date:   Tue, 25 Feb 2020 12:10:21 +0100
From:   Markus Elfring <Markus.Elfring@....de>
To:     Masami Hiramatsu <mhiramat@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        linux-doc@...r.kernel.org, linux-fsdevel@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
        Alexey Dobriyan <adobriyan@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Ingo Molnar <mingo@...hat.com>, Jiri Olsa <jolsa@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Rob Herring <robh+dt@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Tim Bird <Tim.Bird@...y.com>,
        Tom Zanussi <tom.zanussi@...ux.intel.com>
Subject: Re: [for-next][12/26] Documentation: bootconfig: Add a doc for
 extended boot config

>> The file format will trigger specific parsing efforts.
>
> Maybe. If someone is interested in expanding their command, (e.g. vim)
> they can use EBNF to understand syntax,

I hope so.


> or directly reuse lib/bootconfig.c which provides a compact parser. :)

I see some development challenges according to this design direction.
This software component is using programming interfaces from
the Linux kernel, isn't it?
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/lib/bootconfig.c?id=c99b17ac03994525092fd66bed14b4a0c82f0b4d#n9

I guess that other approaches should be considered for the desired
software reuse in this system configuration area.

Is there a need to map key and value combinations directly to files
(and directories) for a more convenient data processing by user-space processes?

Regards,
Markus