Re: jiffies rollover, uptime etc.

[Alan Cox]

> I wonder, is it more expensive to write all drivers to handle the
> wraps than to take the long long increment hit?  The increment is

Total cost of handling it right - 0 clocks. Its simply about maths order
and sign 

> Maybe the non-atomicity of the long long increment is the problem?

A big one yes.

> Does this problem still exist on 64-bit machines?

Not in the same way - you'll need a lot of years before you worry about it.