[ntp:questions] drift modeling question

Uwe Klein uwe_klein_habertwedt at t-online.de
Sat Jul 19 16:36:59 UTC 2008


Unruh wrote:
> Uwe Klein <uwe_klein_habertwedt at t-online.de> writes:
> 
> 
>>Unruh wrote:
>>
>>>Under Linux support is a mess. For example if you turn on an interrupt, the
>>>system returns immediately even though the conditions of the interrupt have
>>>not been met. Some bug in the code.
>>>
>>
>>could you be more specific?
> 
> 
> Sure
> bugzilla.kernel.org bug 11112
> On more recent systems (eg systems with HPET) the kernel code was not

snip..............snip
> very bad hpet/bios behaviour.)

Thank you very much for the explanation.

I had played around ( er, actually I use it
for a scripted userland driver framwork for
instrumentation we have )
This uses a userland interrupt patch to
have selected interrupts signal unserland.

I had some issues with edge/level irq handling.

uwe




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