Messages in this thread | | | Date | Tue, 19 Oct 2004 15:04:01 +0200 | From | Ingo Molnar <> | Subject | Re: [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U5 |
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* Kevin Hilman <kevin@hilman.org> wrote:
> > the generic semaphore implementation (which uses rwsems) makes it > > possible to use the deadlock detection mechanism for all the mutex types > > we currently have: semaphores, rw-semaphores, spinlock-mutexes and > > rwlock-mutexes. Another benefit is that PREEMPT_REALTIME becomes much > > more portable this way. (although it's still x86-only at the moment.) > > Speaking of portability, is anyone yet working on ports to other > platforms? I'm particularily interested in ARM.
i'll do x64 a couple of days after stability has been reached. I dont know of any ARM efforts though.
a good starting point would be to enhance the generic-hardirqs framework for ARM. Generic-hardirqs is a portion of the PREEMPT_REALTIME patch that i've split out and submitted upstream, and which is expected to be merged into 2.6.10. The generic irq subsystem makes the irq-threading feature really simple and maintainable. So for PREEMPT_REALTIME to work on ARM the first step is to enable generic-hardirqs on ARM. (which is far from simple though.)
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