Changing HZ value in linux kernel

[Robert Garrett]

Hi,
I have a question about timers in the linux kernel.  I'm working with an
embedded ARM processor (pxa-x270) and linux kernel version 2.6.16.  One of
the drivers I'm writing needs 1ms timing accuracy and I found I could
achieve this using kernel timers and changing the value of HZ to 1000 (the
default is 100).

However, I now find that mdelay and udelay etc. don't give the correct
delays.  This causes a problem in one of the other drivers I have, but I'm
also worried that other code within the kernel may have broken aswell.

How do I fix the delays so that they still work?  Or am I going about this
in completely the wrong way - is there a better way for me to get 1ms
resolution timers in the kernel?

Thanks,

Robert Garrett
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