linux-kernel - Re: [PATCH] Add kerneldoc for flush_scheduled

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Date:	Thu, 13 Aug 2009 09:37:59 -0500
From:	James Bottomley <James.Bottomley@...senPartnership.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Andy Whitcroft <apw@...onical.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	Randy Dunlap <randy.dunlap@...cle.com>
Subject: Re: [PATCH] Add kerneldoc for flush_scheduled_work()

On Thu, 2009-08-13 at 09:25 +0200, Ingo Molnar wrote:
> * James Bottomley <James.Bottomley@...senPartnership.com> wrote:
> 
> > On Wed, 2009-08-12 at 10:13 -0400, Alan Stern wrote:
> > > On Wed, 12 Aug 2009, Ingo Molnar wrote:
> > > 
> > > > > And here I was thinking kerneldoc doesn't actually work 
> > > > > like that, but perhaps Randy fixed it so the initial 
> > > > > description can line-wrap?
> > > 
> > > Yes, that's what I thought too.  If kerneldoc has been fixed 
> > > then the description line certainly should get wrapped.
> > 
> > I really don't think it needs to be fixed: it's a feature not a 
> > bug.  It requires people writing kernel doc actually to think of 
> > one line summaries.
> 
> As long as the argument is that it's good to have limitations just 
> because it has good effects as well (which the gist of your argument 
> seems to be), i disagree.

You're free to disagree

> That's a very basic argument of freedom. Just consider the Gestapo 
> which was also a 'feature' to keep criminals in check. Did you know 
> that there were record low levels of petty criminality both in nazi 
> Germany and during communism (and under just about any totalitarian 
> regime)? Still nobody in their right mind is arguing that just due 
> to that they are the right social model ...
> 
> I think this DocBook limitation needs to be fixed, because there are 
> legitimate cases where a function name got too long (for no fault of 
> its own, but for properties of the name-space it is operating in), 
> and we do not want a nanny state beat it into a single line.

But your argument is bogus.  We have tons of additional rules in Linux
coding and we have a variety of enforcement mechanisms from BUILD_BUG_ON
through to checkpatch.pl.  This really doesn't have anything to do with
"freedom".

There are really two questions here

     1. Is it a good rule that our oneline docbook function summaries
        should be, well, one line?
     2. Is the enforcement mechanism for this rule adequate?

I think 1. is reasonable.  I think 2. needs work because you don't see
the problem until make doc.

James


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