Re: [Patch] Re: Nasty suprise with uptime

Benjamin LaHaise
2001-11-01T18:35:02Z

On Thu, Nov 01, 2001 at 01:03:32PM -0500, Richard B. Johnson wrote:
> does the jumps on condition and tests for zero, even after the
> flags have been set by the previous operation, I tested what
> the result was. It turns out that it's only a couple of clock
> cycles, not the 6 extra clocks that the hand calculation shows.

*sigh* You're not testing any of the effects on available execution
resources within the processor.

> So, if you leave jiffies alone, but bump another variable when it
> wraps, you get to eat your cake and keep it too.

As Linus pointed out, using casting tricks with a long long will just
work for this case. Sounds good to me.

-ben