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Re: unstable? nah. :-)

On Thu, Jun 08, 2006 at 10:39:48PM +0300, Lars Wirzenius wrote:
> Fixing this would require having every increment of the jiffies counter
> to check for overflow, and using two counters. This is unnecessary
> overhead (a very small overhead, granted, but still), for a very small
> benefit.

No it wouldn't; it'd just require you to have two extra ints, and something that
ran every so often (and as part of any syscall that tells userspace the uptime),
that does:

	static unsigned last_uptime = 0;
	static unsigned wraps = 0;
	if (uptime < last_uptime) wraps++;
	last_uptime = uptime;

You could probably even do it in userspace, really, with some care.


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