Re: sched_clock() uses are broken

[Russell King]

On Sun, May 07, 2006 at 10:33:41PM +1000, Nick Piggin wrote:
> Mike Galbraith wrote:
> >On Wed, 2006-05-03 at 03:07 +1000, Nick Piggin wrote:
> >
> >>Other problem is that some people didn't RTFM and have started trying to
> >>use it for precise accounting :(
> >
> >
> >Are you talking about me perchance?  I don't really care about precision
> >_that_ much, though I certainly do want to tighten timeslice accounting.
> 
> No, sched_clock is fine to be used in CPU scheduling choices, which are
> heuristic anyway (although strictly speaking, even using it for timeslicing
> within a single CPU could cause slight unfairness).

Except maybe if it rolls over every 178 seconds, which is my original
point.  Maybe someone could comment on my initial patch sent 5 days
ago?

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:  2.6 Serial core
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