[linux-audio-dev] crossplatform atomics

[Kai Vehmanen]

On Thu, 25 May 2006, Lee Revell wrote:

> On Thu, 2006-05-25 at 19:57 +0300, Kai Vehmanen wrote:
>> Does someone have a good reference on this? I think the writes just
> Do we still care about 32 bit sparc?

Not necessarily much, but I'd like to understand this fully. There might 
be other archs affected as well. Again looking at the Linux kernel code - 
for instance armv6 atomic_set needs spinning (but not for armv4)... so 
it's not just sparc32. There might not be _that_ many sparc32s out 
there, but there are over 3 billion arm cores out there. ;)

But, but, even on these platforms, it's just the writes. It'd be 
interesting to know if there are any cases where you could be reading 
bogus values due to concurrent access to an 'int'.

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