linux-kernel - Re: 2.6.29 -mm merge plans

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Message-ID: <20090108191152.GU15123@enneenne.com>
Date:	Thu, 8 Jan 2009 20:11:53 +0100
From:	Rodolfo Giometti <giometti@...eenne.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Christoph Hellwig <hch@...radead.org>,
	linux-kernel@...r.kernel.org, Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: 2.6.29 -mm merge plans

On Tue, Jan 06, 2009 at 03:19:15PM -0800, Andrew Morton wrote:
> (cc's added)
> 
> On Tue, 6 Jan 2009 17:57:44 -0500
> Christoph Hellwig <hch@...radead.org> wrote:
> 
> > On Mon, Jan 05, 2009 at 12:43:00AM -0800, Andrew Morton wrote:
> > 
> > > linuxpps-core-support.patch
> > 
> > looks generally good, but the comments should get a little loving.
> > Please remove the stupid filenames that always get out of sync in
> > the top of file comments, and make the documentation of exported
> > symbols kernel-doc instead of it's weird own format.

With "kernel-doc" do you mean what explained into
Documentation/kernel-doc-nano-HOWTO.txt file?

> > Does checkpatch.pl still not catch these things?

No... checkpatch.pl reports everything OK.

> > Also the ioctl certainly should be an unlocked_ioctl and not the
> > old BKL-locked variant. The !uarg checks in the ioctls can go,
> > copy_to/from_users does this automatically.
> > 
> > pps.h shoulkd be split into one header only defining the
> > kernel<->userspace ABI, and a kernel-internal one.  That way
> > also the conditional includes can go away.

I don't understand well what I should do here... I supposed __KERNEL__
define was defined to allow mixing kernel and userland code.

> > > pps-documentation-programs-and-examples.patch
> > 
> > Once again this stuff is in and utterly wrong place where it can't
> > easily be package for distros.  ppsfind belongs into util-linux and
> > needs a proper mangage, ppsldisc is not nessecary but ldattach in
> > util-linux needs to grow support for N_PPS instead, and ppstest
> > should probably go into util-linux in a more polished version, too.

Regarding ldisc support we should ask to Alan which solution he
preferes: ldisc & N_PPS or setserial & HARDPPS.

However I suppose is better having the LinuxPPS's core inclusion and
then solve the serial support issue.

> > > pps-userland-header-file-for-pps-api.patch
> > 
> > This one is utterly wrong.  It provides what should be a userspace
> > library as inlines in a kernel header. 
> > 
> > Please do a proper libpps library package.
> 
> Well that's a drop-it-all-and-start again scale of thing.

I think so... :'(

> Rodolfo, do you have sufficient information here?

I'll start changing the code ASAP and I'll ask to you if something
will be still obscure to me. :)

Thanks for your help and time,

Rodolfo

-- 

GNU/Linux Solutions                  e-mail: giometti@...eenne.com
Linux Device Driver                          giometti@...ux.it
Embedded Systems                     phone:  +39 349 2432127
UNIX programming                     skype:  rodolfo.giometti
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