| | Date | Fri, 3 Jul 2009 13:26:42 +0200 | | From | Ingo Molnar <> | | Subject | Re: [PATCH 1/2] FRV: Implement atomic64_t |
* Ingo Molnar <mingo@elte.hu> wrote:
> Good point. I've done a simple: > > u64 atomic64_read(atomic64_t *ptr) > { > return cmpxchg8b(ptr, 0, 0); > }
-1 is better i guess, as that way we can avoid dirtying the cacheline. Zero is way too common for atomics.
Ingo
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