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Date: Sun, 16 Feb 2003 09:10:31 +0100 (CET)
From: Tim Schmielau <tim@physik3.uni-rostock.de>
To: Anton Blanchard <anton@samba.org>
cc: William Lee Irwin III <wli@holomorphy.com>, Andrew Morton <akpm@digeo.com>,
       Andi Kleen <ak@suse.de>, lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] make jiffies wrap 5 min after boot
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Anton Blanchard <anton@samba.org> writes:
> Hi,
>
> > +#define INITIAL_JIFFIES (0xffffffffUL & (unsigned long)(-300*HZ))
>
> In order to make 64bit arches wrap too, you might want to use -1UL here.
> Not that jiffies should wrap on a 64bit machine...

The whole point of the "0xffffffffUL &" is not to test 64 bit arches,
because I know Andi doesn't take jiffies wrap patches. And-ing with -1UL
is a no-op, as it is with ~0UL.

Tim



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