linux-kernel - Re: [PATCH] LinuxPPS (with new syscalls API)

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Message-ID: <20070710163625.GH32503@enneenne.com>
Date:	Tue, 10 Jul 2007 18:36:25 +0200
From:	Rodolfo Giometti <giometti@...eenne.com>
To:	Lennart Sorensen <lsorense@...lub.uwaterloo.ca>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] LinuxPPS (with new syscalls API) - new version

On Tue, Jul 10, 2007 at 12:01:51PM -0400, Lennart Sorensen wrote:
> On Sun, Jul 01, 2007 at 09:24:41PM +0200, Rodolfo Giometti wrote:
> >     struct pps_timedata_s {
> >        __32 sec;
> >        __32 nsec;
> >     }
> > 
> > Ok? I think 32 bits are enought for keeping seconds... :)
> 
> You want to purposely define an API that will break in 23 years (or is
> that 83 years since you made it unsigned potentially)?  Why not 64bit
> for seconds and 32bit for nsec.  That should cover it for long enough.
> When the unix time format was created 37 years ago, I could see thinking
> 32bit seemed reasonable, but why do it now.  We have ram enough for
> 64bits.

Sorry I wrote wrong. I meant __u32.

I can use __u64 for seconds but doing this there could be problems for
32 bits platforms? =:-o

Rodolfo (not a 64 bits guru :)

-- 

GNU/Linux Solutions                  e-mail:    giometti@...eenne.com
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Embedded Systems                     		giometti@...ux.it
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