Re: [PATCH] FRV: Fix the section attribute on UP DECLARE_PER_CPU()

[Ingo Molnar]

* David Howells <dhowells@xxxxxxxxxx> wrote:

> Any idea what this:
> 
> 	#define DEFINE_PER_CPU_SHARED_ALIGNED(type, name)
> 
> is intended for?

it is a mixed type of percpu variable: which is per CPU but which 
can (and will) also be accessed from other CPUs. This way we 
basically cache-line align it and make sure nearby percpu variables 
dont get caught up in any cacheline bounces. It was introduced a 
couple of years ago.

	Ingo
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