Re: [Linux-ia64] Linux kernel deadlock caused by spinlock bug

[William Lee Irwin III]

On Tue, Jul 30, 2002 at 03:32:08PM +0200, Andi Kleen wrote:
> One such way would be a variant of queued locks, like John Stultz's
> http://oss.software.ibm.com/developer/opensource/linux/patches/?patch_id=218
> These are usually needed for fairness even with plain spinlocks on NUMA 
> boxes in any case (so if your box is NUMA then you will need it anyways) 
> They only exist for plain  spinlocks yet, but I guess they could be extended 
> to readlocks. 

I should point out plenty of stock PC hardware gets NUMA effects.
For some reason there's not much documentation and/or publicity about
it, though. I wonder why... (don't answer, I know why and know I'm fscked)

Cheers,
Bill