Messages in this thread | | | Subject | Re: [PATCH, RFC] improved hacks to allow -rt to run kernbench on POWER | From | Peter Zijlstra <> | Date | Tue, 13 Nov 2007 11:59:05 +0100 |
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On Tue, 2007-11-13 at 11:05 +0100, Peter Zijlstra wrote:
> Anyway, it seems its the generic irq stuff that uses raw_spinlock_t and > disables IRQs, so there isn't much we can do from the ARCH level I'm > afraid :-( > > Ingo, any sane ideas?
Ok benh came up with a workable idea, he just needs a night's sleep to come up with the details :-)
The idea is to fill the radix tree from host->ops->map() (or irq_create_mapping()) as that should still be preemptable, and then convert all other uses to RCU lookups.
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