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

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Message-ID: <20070710163839.GI32503@enneenne.com>
Date:	Tue, 10 Jul 2007 18:38:39 +0200
From:	Rodolfo Giometti <giometti@...eenne.com>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	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 05:05:47PM +0100, David Woodhouse wrote:
> 
> I'm sure the version with 'volatile' will also be broken then. Sounds
> like the right answer is to fix the locking.

But wish avoiding locking at all since this may delay the time stamp
recording. We (the LinuxPPS guys) niticed that just a single
instruction my degrade the time setting about 50%!

I avoid locking just using a pointer and setting it to a dummy
structure when not used... is that wrong? :-o

Ciao,

Rodolfo

-- 

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