"Chen, Kenneth W" <[email protected]> writes:
>
> I tried to use cache_line_size() to find out the alignment of struct bio, but
> stumbled on that it is a runtime function for x86_64.
It's a single global variable access:
#define cache_line_size() (boot_cpu_data.x86_cache_alignment)
Or do you mean it caused cache misses? boot_cpu_data is cache aligned
and practically read only, so there shouldn't be any false sharing at least.
-Andi
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