> +#define for_each_cpu(cpu, mask) \
> + for(mask = cpu_online_map; \
> + cpu = __ffs(mask), mask != 0; \
> + mask &= ~(1<<cpu))
> +
This is neat, but I'd like to see it work with O(1) as well.
Mingo's code uses some long bitmaps.
-- Pete
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