linux-kernel - Re: code style: Re: [PATCH v4] printk: Userspace format enumeration support

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Date:   Wed, 17 Feb 2021 11:00:18 -0500
From:   Johannes Weiner <hannes@...xchg.org>
To:     Petr Mladek <pmladek@...e.com>
Cc:     Chris Down <chris@...isdown.name>, linux-kernel@...r.kernel.org,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        John Ogness <john.ogness@...utronix.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kees Cook <keescook@...omium.org>, kernel-team@...com
Subject: Re: code style: Re: [PATCH v4] printk: Userspace format enumeration
 support

On Wed, Feb 17, 2021 at 04:45:51PM +0100, Petr Mladek wrote:
> On Tue 2021-02-16 21:05:48, Chris Down wrote:
> > Johannes Weiner writes:
> > > On Tue, Feb 16, 2021 at 05:27:08PM +0000, Chris Down wrote:
> > > > Petr Mladek writes:
> > > > > I wonder if we could find a better name for the configure switch.
> > > > > I have troubles to imagine what printk enumeration might mean.
> > > > > Well, it might be because I am not a native speaker.
> > > > >
> > > > > Anyway, the word "enumeration" is used only in the configure option.
> > > > > Everything else is "printk_fmt"
> > > > >
> > > > > What about DEBUG_PRINTK_FORMATS?
> > > > 
> > > > Hmm, I don't like DEBUG_PRINTK_FMTS because it's not about debugging, it's
> > > > about enumeration, I guess :-)
> > > > 
> > > > The name should reflect that this catalogues the available printks in the
> > > > kernel -- "debugging" seems to imply something different.
> > > > 
> > > > I'm ok with a different name like "printk catalogue" or something like that
> > > > if you prefer. Personally I think "printk enumeration" is fairly clear --
> > > > it's about enumerating the available printks -- but anything that captures
> > > > that spirit is fine.
> > > 
> > > How about config PRINTK_INDEX?
> > 
> > Ah yes, I also like that. PRINTK_INDEX is fine from my perspective and is
> > more straightforward than "enumeration", thanks.
> 
> It is better than enumeration. But there is still the same
> problem. The word "index" is used neither in the code
> nor in the debugfs interface. It is like enabling cars and
> seeing apples.

I assumed code and interface would then also be changed to
printk_index, struct printk_index_section, pi_foo, ...