HEADSUP: Native preemption added to the kernel scheduler

[Kris Kennaway]

On Sat, Jul 03, 2004 at 12:24:18AM -0500, Thomas T. Veldhouse wrote:
> John Baldwin wrote:
> 
> >In theory this is a big NOP except for some small optimizations in the 
> >form of avoiding a few context switches and avoiding some run queue 
> >operations.  Several people have tested this code but there may be some 
> >remaining adventures.  Note that this adds a printf during dmesg for 
> >architectures that do not support preemption about preemption being 
> >disabled and degrading performance (mostly via increased latency).  
> >Preemption is enabled by defining PREEMPTION in <machine/param.h> and 
> >architecture porters are encouraged to get preemption working on their 
> >architecture.
> >
> > 
> >
> 
> The GENERIC kernel is failing to build now (12AM 7-03-2004) ... 
> complaining about wrong number of arguments in the following file:
> 
> src/sys/kern/sched_ule.c
> 
> Unfortunately, I did not get the function details before rebooting my 
> machine into windows.

That was fixed a few hours ago.

Kris



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