Lee Revell <rlrevell@email-addr-hidden-job.com> writes:
> Basically the RT preempt kernel achieves determinism by making every
> code path in the kernel preemptible, except for a few like the scheduler
> (and timer ISR, for now) that fundamentally can't be made preemptible,
> and those few code paths can be analyzed to ensure that they execute in
> constant time. This is achieved by turning all spinlocks into priority
> inheriting mutexes.
That's interesting, I didn't know that. So, it seems Ingo's patchset
really *is* hard-RT.
> It's still not considered ready for prime time, but this is definitely
> the direction that hard RT on Linux is moving. It definitely appears
> that this will obsolete RTLinux (and MontaVista Linux, eventually).
I'll be surprised to see full hard-RT integrated into the base kernel.
But, maybe as a Kconfig option some day.
Meanwhile, keep up the good work...
-- joqReceived on Sat Apr 9 00:15:17 2005
This archive was generated by hypermail 2.1.8 : Sat Apr 09 2005 - 00:15:18 EEST