Re: [PATCH 2/3] High-res-timers part 2 (x86 platform code) take 5.1

[Ulrich Windl]

On 12 Oct 2002, at 18:03, Jim Houston wrote:

> 
> >> This patch, in conjunction with the "core" high-res-timers 
> >> patch implements high resolution timers on the i386 
> >> platforms. 
> >
> > I really don't get the notion of partial ticks, and quite frankly, this 
> > isn't going into my tree until some major distribution kicks me in the 
> > head and explains to me why the hell we have partial ticks instead of just 
> > making the ticks shorter. 
> > 
> >                Linus 
> 
> Hi Linus,
> 
> Concurrent has been using previous versions of the Posix timers patch
> in our 2.4.18 based kernel.  I like this interface and would like to 
> see it included in your kernel.

Hi,

I think nobody objects seeing the interface implemented. Maybe just how 
it's implemented. I did not have a close look, but the concept seems 
odd at first sight.

Using a individial timer as interrupt source may be a different idea 
(if avaliable for the particular hardware), but the there must be a 
balance between busy looping in the kernel and setting up of such an 
individual interrupt.

The other thing is how to correlate it with the wall clock.

Sorry for not giving answers, I just know the problems...

Regards,
Ulrich