Re: [PATCHSET] percpu: generalize first chunk allocators and improvelpage NUMA support

From: H. Peter Anvin
Date: Thu Jun 25 2009 - 22:05:01 EST


Tejun Heo wrote:
> Andi Kleen wrote:
>>> I don't know why, but in the configuration I saw each percpu area was
>>> something like 1.8 MB.
>> That sounds like something that needs to be investigated and fixed then.
>> In a sense per cpu space is precious like stack space and shouldn't
>> be wasted.
>
> The large percpu space is most likely from lockdep.
>

That makes sense.

-hpa

--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.

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