Peter Zijlstra wrote: > On Wed, 2008-08-27 at 12:56 +0200, Nick Piggin wrote: > > >> BTW. I wonder about other architectures that are of interest to -rt? Like >> mips or arm perhaps... Any plans to implement ticket locks on those, or >> do they not tend to be used in SMP configurations on -rt yte? >> > > I think both are starting to show more and more SMP machines, so yes, > eventually we'll want ticket locks for them too. > > That said, I'm not aware of anyone working on it - I suppose we could > poke the regular arch maintainers.. Ralf, Russell ? > > As an aside: I have an implementation of C-based ticket lock replacements for raw_spinlock_t that I could post. I never posted them because I mostly care about x86 and Nick's solution is superior there since its hand-tuned asm. But mine could be used in places that have not yet written arch support but need FIFO. I basically have it as a config option to enable "generic fifo spinlocks" or something like that. -Greg
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