Messages in this thread | | | Date | Wed, 6 Dec 2006 09:21:00 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: [PATCH] WorkStruct: Implement generic UP cmpxchg() where an arch doesn't support it |
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On Wed, 6 Dec 2006, David Howells wrote: > > Implement generic UP cmpxchg() where an arch doesn't otherwise support it. > This assuming that the arch doesn't have support SMP without providing its own > cmpxchg() implementation.
This is too ugly to live. At least the kernel/workqueue.c part.
The requirement that everybody implement a workable cmpxchg (and falling back to spinlocks if required as per the atomic bit operations) looks ok, but don't show that in generic code.
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